introducing NamedRoutes cookbook

2022-02-18 12:40:23 +01:00
81 changed files with 681 additions and 965 deletions
--- a/.github/workflows/master.yml
+++ b/.github/workflows/master.yml
@ -19,8 +19,6 @@ jobs:
          - "8.8.4"
          - "8.10.7"
          - "9.0.2"
-          - "9.2.2"
-          - "9.4.2"

    steps:
    - uses: actions/checkout@v2
@ -49,7 +47,10 @@ jobs:

    - name: Configure
      run: |
-        cabal install --ignore-project -j2 doctest --constraint='doctest ^>=0.20'
+        # Using separate store-dir because default one already has 'ghc-paths' package installed
+        # with hardcoded path to ghcup's GHC path (which it was built with). This leads to failure in
+        # doctest, as it tries to invoke that GHC, and it doesn't exist here.
+        cabal --store-dir /tmp/cabal-store install --ignore-project -j2 doctest --constraint='doctest ^>=0.18'

    - name: Build
      run: |
@ -60,56 +61,66 @@ jobs:
        cabal test all

    - name: Run doctests
+      # doctests are broken on GHC 9 due to compiler bug:
+      # https://gitlab.haskell.org/ghc/ghc/-/issues/19460
+      continue-on-error: ${{ matrix.ghc == '9.0.1' }}
      run: |
        # Necessary for doctest to be found in $PATH
        export PATH="$HOME/.cabal/bin:$PATH"

-        DOCTEST="cabal repl --with-ghc=doctest --ghc-options=-w"
-        (cd servant && eval $DOCTEST)
-        (cd servant-client && eval $DOCTEST)
-        (cd servant-client-core && eval $DOCTEST)
-        (cd servant-http-streams && eval $DOCTEST)
-        (cd servant-docs && eval $DOCTEST)
-        (cd servant-foreign && eval $DOCTEST)
-        (cd servant-server && eval $DOCTEST)
-        (cd servant-machines && eval $DOCTEST)
-        (cd servant-conduit && eval $DOCTEST)
-        (cd servant-pipes && eval $DOCTEST)
+        # Filter out base-compat-batteries from .ghc.environment.*, as its modules
+        # conflict with those of base-compat.
+        #
+        # FIXME: This is an ugly hack. Ultimately, we'll want to use cabal-doctest
+        # (or cabal v2-doctest, if it ever lands) to provide a clean GHC environment.
+        # This might allow running doctests in GHCJS build as well.
+        perl -i -e 'while (<ARGV>) { print unless /package-id\s+(base-compat-batteries)-\d+(\.\d+)*/; }' .ghc.environment.*

-  # stack:
-  #   name: stack / ghc ${{ matrix.ghc }}
-  #   runs-on: ubuntu-latest
-  #   strategy:
-  #     matrix:
-  #       stack: ["2.7.5"]
-  #       ghc: ["8.10.7"]
+        (cd servant && doctest src)
+        (cd servant-client && doctest src)
+        (cd servant-client-core && doctest src)
+        (cd servant-http-streams && doctest src)
+        (cd servant-docs && doctest src)
+        (cd servant-foreign && doctest src)
+        (cd servant-server && doctest src)
+        (cd servant-machines && doctest src)
+        (cd servant-conduit && doctest src)
+        (cd servant-pipes && doctest src)

-  #   steps:
-  #   - uses: actions/checkout@v2
+  stack:
+    name: stack / ghc ${{ matrix.ghc }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        stack: ["2.7.3"]
+        ghc: ["8.10.7"]

-  #   - uses: haskell/actions/setup@v1
-  #     name: Setup Haskell Stack
-  #     with:
-  #       ghc-version: ${{ matrix.ghc }}
-  #       stack-version: ${{ matrix.stack }}
+    steps:
+    - uses: actions/checkout@v2

-  #   - uses: actions/cache@v2.1.3
-  #     name: Cache ~/.stack
-  #     with:
-  #       path: ~/.stack
-  #       key: ${{ runner.os }}-${{ matrix.ghc }}-stack
+    - uses: haskell/actions/setup@v1
+      name: Setup Haskell Stack
+      with:
+        ghc-version: ${{ matrix.ghc }}
+        stack-version: ${{ matrix.stack }}

-  #   - name: Install dependencies
-  #     run: |
-  #       stack build --system-ghc --test --bench --no-run-tests --no-run-benchmarks --only-dependencies
+    - uses: actions/cache@v2.1.3
+      name: Cache ~/.stack
+      with:
+        path: ~/.stack
+        key: ${{ runner.os }}-${{ matrix.ghc }}-stack

-  #   - name: Build
-  #     run: |
-  #       stack build --system-ghc --test --bench --no-run-tests --no-run-benchmarks
+    - name: Install dependencies
+      run: |
+        stack build --system-ghc --test --bench --no-run-tests --no-run-benchmarks --only-dependencies

-  #   - name: Test
-  #     run: |
-  #       stack test --system-ghc
+    - name: Build
+      run: |
+        stack build --system-ghc --test --bench --no-run-tests --no-run-benchmarks
+
+    - name: Test
+      run: |
+        stack test --system-ghc

  ghcjs:
    name: ubuntu-latest / ghcjs 8.6
--- a/cabal.project
+++ b/cabal.project
@ -47,8 +47,15 @@ packages:
  doc/cookbook/using-custom-monad
  doc/cookbook/using-free-client
  -- doc/cookbook/open-id-connect
-  doc/cookbook/managed-resource
+  doc/cookbook/namedRoutes

 tests: True
 optimization: False
 -- reorder-goals: True
+
+-- needed for doctests
+write-ghc-environment-files: always
+
+-- https://github.com/chordify/haskell-servant-pagination/pull/12
+allow-newer: servant-pagination-2.2.2:servant
+allow-newer: servant-pagination-2.2.2:servant-server
--- a/changelog.d/1556
+++ b/changelog.d/1556
@ -1,81 +0,0 @@
-synopsis: Display capture hints in router layout
-prs: #1556
-
-description: {
-
-This PR enhances the `Servant.Server.layout` function, which produces a textual description of the routing layout of an API. More precisely, it changes `<capture>` blocks, so that they display the name and type of the variable being captured instead.
-
-Example:
-
-For the following API
-```haskell
-type API =
-       "a" :> "d" :> Get '[JSON] NoContent
-  :<|> "b" :> Capture "x" Int :> Get '[JSON] Bool
-  :<|> "a" :> "e" :> Get '[JSON] Int
-```
-
-we previously got the following output:
-
-```
-/
-├─ a/
-│  ├─ d/
-│  │  └─•
-│  └─ e/
-│     └─•
-└─ b/
-   └─ <capture>/
-      ├─•
-      ┆
-      └─•
-```
-
-now we get:
-
-```
-/
-├─ a/
-│  ├─ d/
-│  │  └─•
-│  └─ e/
-│     └─•
-└─ b/
-   └─ <x::Int>/
-      ├─•
-      ┆
-      └─•
-```
-
-This change is achieved by the introduction of a CaptureHint type, which is passed as an extra argument to the CaptureRouter and CaptureAllRouter constructors for the Router' type.
-CaptureHint values are then used in routerLayout, to display the name and type of captured values, instead of just `<capture>` previously.
-
-N.B.:
-Because the choice smart constructor for routers can aggregate Capture combinators with different capture hints, the Capture*Router constructors actually take a list of CaptureHint, instead of a single one.
-
-This PR also introduces Spec tests for the routerLayout function.
-
-Warning:
-This change is potentially breaking, because it adds the constraint `Typeable a` to all types that are to be captured. Because all types are typeable since GHC 7.10, this is not as bad as it sounds ; it only break expressions where `a` is quantified in an expression with `Capture a`.
-In those cases, the fix is easy: it suffices to add `Typeable a` to the left-hand side of the quantification constraint.
-
-For instance, the following code will no longer compile:
-```haskell
-type MyAPI a = Capture "foo" a :> Get '[JSON] ()
-
-myServer :: forall a. Server (MyAPI a)
-myServer = const $ return ()
-
-myApi :: forall a. Proxy (MyAPI a)
-myApi = Proxy
-
-app :: forall a. (FromHttpApiData a) => Application
-app = serve (myApi @a) (myServer @a)
-```
-
-Indeed, `app` should be replaced with:
-```haskell
-app :: forall a. (FromHttpApiData a, Typeable a) => Application
-app = serve (myApi @a) (myServer @a)
-```
-}
--- a/changelog.d/1569
+++ b/changelog.d/1569
@ -1,13 +0,0 @@
-synopsis: Encode captures using toEncodedUrlPiece
-prs: #1569
-issues: #1511
-
-description: {
-The `servant-client` library now makes direct use of `toEncodedUrlPiece` from `ToHttpApiData`
-to encode captured values when building the request path. It gives user freedom to implement
-URL-encoding however they need.
-
-Previous behavior was to use `toUrlPiece` and URL-encode its output using `toEncodedUrlPiece`
-from the `Text` instance of `ToHttpApiData`. The issue with this approach is that
-`ToHttpApiData Text` is overly zealous and also encodes characters, such as `*`, which are perfectly valid in a URL.
-}
--- a/changelog.d/1573
+++ b/changelog.d/1573
@ -1,2 +0,0 @@
-synopsis: Add API docs for ServerT
-prs: #1573
--- a/changelog.d/1580
+++ b/changelog.d/1580
@ -1,12 +0,0 @@
-synopsis: Allow IO in validationKeys
-prs: #1580
-issues: #1579
-
-description: {
-
-Currently validationKeys are a fixed JWKSet. This does not work with OIDC
-providers such as AWS Cognito or Okta, which regularly fetching jwks_uri to
-discover new and expired keys.
-
-This change alters the type of validationKeys from JWKSet to IO JWKSet.
-}
--- a/changelog.d/1589
+++ b/changelog.d/1589
@ -1,2 +0,0 @@
-synopsis: Only include question mark for nonempty query strings
-prs: 1589
--- a/changelog.d/1595
+++ b/changelog.d/1595
@ -1,2 +0,0 @@
-synopsis: Run ClientEnv's makeClientRequest in IO.
-prs: #1595
--- a/changelog.d/1606
+++ b/changelog.d/1606
@ -1,10 +0,0 @@
-synopsis: Handle Cookies correctly for RunStreamingClient
-prs: #1606
-issues: #1605
-
-description: {
-
-Makes performWithStreamingRequest take into consideration the
-CookieJar, which it previously didn't.
-
-}
--- a/changelog.d/1638
+++ b/changelog.d/1638
@ -1,2 +0,0 @@
-synopsis: Add Functor instance to AuthHandler.
-prs: #1638
--- a/changelog.d/1649
+++ b/changelog.d/1649
@ -1,8 +0,0 @@
-synopsis: Add HasStatus instance for Headers (that defers StatusOf to underlying value)
-prs: #1649
-
-description: {
-
-Adds a new HasStatus (Headers hs a) instance (StatusOf (Headers hs a) = StatusOf a)
-
-}
--- a/doc/Makefile
+++ b/doc/Makefile
@ -10,7 +10,7 @@ BUILDDIR      = _build

 # Put it first so that "make" without argument is like "make help".
 help:
-	@if [ ! -d venv ]; then echo "WARNING: There is no venv directory, did you forget to 'virtualenv venv'. Check README.md."; fi
+	@if [ ! -d venv ]; then echo "WARNING: There is no venv directory, did you forget to 'virtualenv venv'. Check building-the-docs file."; fi
 	@if [ ! "z$$(which $(SPHINXBUILD))" = "z$$(pwd)/venv/bin/sphinx-build" ]; then echo "WARNING: Did you forgot to 'source venv/bin/activate'"; fi
 	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)

--- a/doc/conf.py
+++ b/doc/conf.py
@ -46,7 +46,7 @@ master_doc = 'index'

 # General information about the project.
 project = u'Servant'
-copyright = u'2022, Servant Contributors'
+copyright = u'2018, Servant Contributors'
 author = u'Servant Contributors'

 # The version info for the project you're documenting, acts as replacement for
@ -169,3 +169,4 @@ texinfo_documents = [
 source_parsers = {
    '.lhs': CommonMarkParser,
 }
+
--- a/doc/cookbook/curl-mock/curl-mock.cabal
+++ b/doc/cookbook/curl-mock/curl-mock.cabal
@ -11,9 +11,6 @@ build-type:          Simple
 tested-with:         GHC==8.6.5, GHC==8.8.3, GHC ==8.10.7

 executable cookbock-curl-mock
-  if impl(ghc >= 9.2)
-    -- generic-arbitrary is incompatible
-    buildable: False
  main-is:             CurlMock.lhs
  build-depends:       base == 4.*
                     , aeson
--- a/doc/cookbook/index.rst
+++ b/doc/cookbook/index.rst
@ -37,4 +37,3 @@ you name it!
  sentry/Sentry.lhs
  testing/Testing.lhs
  open-id-connect/OpenIdConnect.lhs
-  managed-resource/ManagedResource.lhs
--- a/doc/cookbook/managed-resource/ManagedResource.lhs
+++ b/doc/cookbook/managed-resource/ManagedResource.lhs
@ -1,114 +0,0 @@
-# Request-lifetime Managed Resources
-
-Let's see how we can write a handle that uses a resource managed by Servant. The resource is created automatically by Servant when the server recieves a request, and the resource is automatically destroyed when the server is finished handling a request.
-
-As usual, we start with a little bit of throat clearing.
-
-
-``` haskell
-{-# LANGUAGE DataKinds #-}
-{-# LANGUAGE TypeOperators #-}
-import Control.Concurrent
-import Control.Exception (bracket, throwIO)
-import Control.Monad.IO.Class
-import Control.Monad.Trans.Resource
-import Data.Acquire
-import Network.HTTP.Client (newManager, defaultManagerSettings)
-import Network.Wai.Handler.Warp
-import Servant
-import Servant.Client
-import System.IO
-```
-
-Here we define an API type that uses the `WithResource` combinator. The server handler for an endpoint with a `WithResource res` component will receive a value of that type as an argument.
-
-``` haskell
-type API = WithResource Handle :> ReqBody '[PlainText] String :> Post '[JSON] NoContent
-
-api :: Proxy API
-api = Proxy
-```
-
-But this resource value has to come from somewhere. Servant obtains the value using an Acquire provided in the context. The Acquire knows how to both create and destroy resources of a particular type.
-
-``` haskell
-appContext :: Context '[Acquire Handle]
-appContext = acquireHandle :. EmptyContext
-
-acquireHandle :: Acquire Handle
-acquireHandle = mkAcquire newHandle closeHandle
-
-newHandle :: IO Handle
-newHandle = do
-  putStrLn "opening file"
-  h <- openFile "test.txt" AppendMode
-  putStrLn "opened file"
-  return h
-
-closeHandle :: Handle -> IO ()
-closeHandle h = do
-  putStrLn "closing file"
-  hClose h
-  putStrLn "closed file"
-```
-
-Now we create the handler which will use this resource. This handler will write the request message to the System.IO.Handle which was provided to us. In some situations the handler will succeed, but in some in will fail. In either case, Servant will clean up the resource for us.
-
-``` haskell
-server :: Server API
-server = writeToFile
-
-  where writeToFile :: (ReleaseKey, Handle) -> String -> Handler NoContent
-        writeToFile (_, h) msg = case msg of
-          "illegal" -> error "wait, that's illegal!"
-          legalMsg -> liftIO $ do
-            putStrLn "writing file"
-            hPutStrLn h legalMsg
-            putStrLn "wrote file"
-            return NoContent
-```
-
-Finally we run the server in the background while we post messages to it.
-
-``` haskell
-runApp :: IO ()
-runApp = run 8080 (serveWithContext api appContext $ server)
-
-postMsg :: String -> ClientM NoContent
-postMsg = client api
-
-main :: IO ()
-main = do
-  mgr <- newManager defaultManagerSettings
-  bracket (forkIO $ runApp) killThread $ \_ -> do
-    ms <- flip runClientM (mkClientEnv mgr (BaseUrl Http "localhost" 8080 "")) $ do
-      liftIO $ putStrLn "sending hello message"
-      _ <- postMsg "hello"
-      liftIO $ putStrLn "sending illegal message"
-      _ <- postMsg "illegal"
-      liftIO $ putStrLn "done"
-    print ms
-```
-
-This program prints
-
-```
-sending hello message
-opening file
-opened file
-writing file
-wrote file
-closing file
-closed file
-sending illegal message
-opening file
-opened file
-closing file
-closed file
-wait, that's illegal!
-CallStack (from HasCallStack):
-  error, called at ManagedResource.lhs:63:24 in main:Main
-Left (FailureResponse (Request {requestPath = (BaseUrl {baseUrlScheme = Http, baseUrlHost = "localhost", baseUrlPort = 8080, baseUrlPath = ""},""), requestQueryString = fromList [], requestBody = Just ((),text/plain;charset=utf-8), requestAccept = fromList [], requestHeaders = fromList [], requestHttpVersion = HTTP/1.1, requestMethod = "POST"}) (Response {responseStatusCode = Status {statusCode = 500, statusMessage = "Internal Server Error"}, responseHeaders = fromList [("Transfer-Encoding","chunked"),("Date","Thu, 24 Nov 2022 21:04:47 GMT"),("Server","Warp/3.3.23"),("Content-Type","text/plain; charset=utf-8")], responseHttpVersion = HTTP/1.1, responseBody = "Something went wrong"}))
-```
-
-and appends to a file called `test.txt`. We can see from the output that when a legal message is sent, the file is opened, written to, and closed. We can also see that when an illegal message is sent, the file is opened but not written to. Crucially, it is still closed even though the handler threw an exception.
--- a/doc/cookbook/namedRoutes/NamedRoutes.lhs
+++ b/doc/cookbook/namedRoutes/NamedRoutes.lhs
@ -0,0 +1,373 @@
+# NamedRoutes - Using records to define APIs
+
+*Available in Servant 0.19 or higher*
+
+Servant offers a very natural way of constructing APIs with nested records, called `NamedRoutes`.
+
+This cookbook explains how to implement such nested-record-APIs using `NamedRoutes` through the example of a Movie Catalog.
+
+First, we start by constructing the domain types of our Movie Catalog.
+After, we show you how to implement the API type with the NamedRoutes records.
+Lastly, we make a Server and a Client out of the API type.
+
+However, it should be understood that this cookbook does _not_ dwell on the built-in servant combinators as the [<Structuring APIs> cookbook ](<https://docs.servant.dev/en/stable/cookbook/structuring-apis/StructuringApis.html>) already covers that angle.
+
+## Why would I want to use `NamedRoutes` over the alternative `:<|>` operator?
+
+With `NamedRoutes`, we don’t need to care about the declaration order of the endpoints.
+For example, with the `:<|>` operator there’s room for error when the order of the API type
+
+```haskell,ignore
+type API1  =   "version" :> Get '[JSON] Version
+                :<|>  "movies" :> Get '[JSON] [Movie]
+```
+
+does not follow the `Handler` implementation order
+
+```haskell,ignore
+apiHandler :: ServerT API1 Handler
+apiHandler =   getMovies
+                 :<|> getVersion
+```
+
+GHC could scold you with a very tedious message such as :
+
+```console
+    • Couldn't match type 'Handler NoContent'
+                     with 'Movie -> Handler NoContent'
+      Expected type: ServerT MovieCatalogAPI Handler
+        Actual type: Handler Version
+                     :<|> ((Maybe SortBy -> Handler [Movie])
+                           :<|> ((MovieId -> Handler (Maybe Movie))
+                                 :<|> ((MovieId -> Movie -> Handler NoContent)
+                                       :<|> (MovieId -> Handler NoContent))))
+    • In the expression:
+        versionHandler
+          :<|>
+            movieListHandler
+              :<|>
+                getMovieHandler :<|> updateMovieHandler :<|> deleteMovieHandler
+      In an equation for 'server':
+          server
+            = versionHandler
+                :<|>
+                  movieListHandler
+                    :<|>
+                      getMovieHandler :<|> updateMovieHandler :<|> deleteMovieHandler
+    |
+226 | server = versionHandler
+```
+
+On the contrary, with the `NamedRoutes` technique, we refer to the routes by their name:
+
+```haskell,ignore
+data API mode = API
+    { list   :: "list" :> ...
+    , delete ::  "delete" :> ...
+    }
+```
+
+and GHC follows the lead :
+
+```console
+    • Couldn't match type 'NoContent' with 'Movie'
+      Expected type: AsServerT Handler :- Delete '[JSON] Movie
+        Actual type: Handler NoContent
+    • In the 'delete' field of a record
+      In the expression:
+        MovieAPI
+          {get = getMovieHandler movieId,
+           update = updateMovieHandler movieId,
+           delete = deleteMovieHandler movieId}
+      In an equation for 'movieHandler':
+          movieHandler movieId
+            = MovieAPI
+                {get = getMovieHandler movieId,
+                 update = updateMovieHandler movieId,
+                 delete = deleteMovieHandler movieId}
+    |
+252 |     , delete = deleteMovieHandler movieId
+```
+
+So, NamedRoutes is more readable for a human, and GHC gives you more accurate error messages.
+
+What are we waiting for?
+
+
+## Boilerplate time!
+
+First, let’s get rid of the the extensions and imports boilerplate in order to focus on our new technique:
+
+
+```haskell
+{-# LANGUAGE DataKinds          #-}
+{-# LANGUAGE DeriveAnyClass     #-}
+{-# LANGUAGE DerivingStrategies #-}
+{-# LANGUAGE DeriveGeneric      #-}
+{-# LANGUAGE OverloadedStrings  #-}
+{-# LANGUAGE TypeOperators      #-}
+
+import GHC.Generics               ( Generic )
+import Data.Aeson                 ( FromJSON, ToJSON )
+import Data.Proxy                 ( Proxy(..) )
+import Network.Wai.Handler.Warp   ( run )
+
+import Servant                    ( NamedRoutes
+                                  , Handler, serve )
+import Servant.API                (Capture, Delete, Get, Put, QueryParam, ReqBody
+                                  , JSON, NoContent (..)
+                                  , FromHttpApiData (..),ToHttpApiData(..)
+                                  , (:>) )
+import Servant.API.Generic        ( (:-) )
+
+import Servant.Client             ( AsClientT, ClientM, client
+                                  , (//), (/:) )
+import Servant.Client.Generic     ()
+
+import Servant.Server             ( Application, ServerT )
+import Servant.Server.Generic     ( AsServerT )
+
+```
+
+## Domain context
+
+Now that we’ve handled the boilerplate, we can dive into our Movie Catalog domain.
+
+Consider a `Movie` constructed from a `Title` and a `Year` of publication.
+
+``` haskell
+data Movie = Movie
+    { movieId :: MovieId
+    , title :: Title
+    , year :: Year
+    }
+    deriving stock Generic
+    deriving anyclass (FromJSON, ToJSON)
+
+type MovieId = String
+type Title = String
+type Year = Int
+
+```
+
+
+Let’s forget about the deriving stuff for now and think about the API that we want to make.
+
+```
+  "version" -> Get Version
+  /
+api          "list" -> Get [Movie] ?sortBy= Title | Year       (sort by the Title or the Year)
+  \        /
+  "movies"                Get Movie
+           \                /
+            Capture MovieId - Put Movie
+                            \
+                              Delete MovieId
+```
+
+In this example, we create a very simple endpoint for the Version,
+and several complex endpoints that use nested records for the CRUD part of the movie.
+
+So, the URLs would look like
+
+- GET …/version
+- GET …/movies/list?sortby=Title
+- GET …/movies/<MovieId>/
+- PUT …/movies/<MovieId>/
+- DELETE …/movies/<MovieId>
+
+### API Type
+
+Now that we have a very clear idea of the API we want to make, we need to transform it into usable Haskell code:
+
+``` haskell
+
+data API mode = API
+    { version :: mode :- "version" :> Get '[JSON] Version
+    , movies :: mode :- "movies" :> NamedRoutes MoviesAPI
+    } deriving stock Generic
+
+type Version = String -- This will do for the sake of example.
+
+```
+Here, we see the first node of our tree. It contains the two branches “version” and “movies” respectively:
+
+The “version” branch is very simple and self-explanatory.
+The “movies” branch will contain another node, represented by another record (see above). That is why we need the `NameRoutes` helper.
+
+Note:
+
+The `mode` type parameter indicates into which implementation the record’s `Generic` representation will be transformed—as a client or as a server. We will discuss that later.
+
+Let's jump into the "movies" subtree node:
+
+
+``` haskell
+
+data MoviesAPI mode = MoviesAPI
+    { list :: mode :- "list" :> QueryParam "SortBy" SortBy :> Get '[JSON] [Movie]
+    , movie :: mode :- Capture "movieId" MovieId :> NamedRoutes MovieAPI
+    } deriving stock Generic
+
+data SortBy = Year | Title
+
+instance ToHttpApiData SortBy where
+  toQueryParam Year = "year"
+  toQueryParam Title = "title"
+
+instance FromHttpApiData SortBy where
+  parseQueryParam "year" = Right Year
+  parseQueryParam "title" = Right Title
+  parseQueryParam param = Left $ param <> " is not a valid value"
+
+```
+So, remember, this type represents the `MoviesAPI` node that we’ve connected earlier to the main `API` tree.
+
+In this subtree, we illustrated both an endpoint with a **query param** and also, a **capture** with a subtree underneath it.
+
+So, let's go deeper into our API tree.
+
+``` haskell
+data MovieAPI mode = MovieAPI
+  { get :: mode :- Get '[JSON] (Maybe Movie)
+  , update :: mode :- ReqBody '[JSON] Movie :> Put '[JSON] NoContent
+  , delete :: mode :- Delete '[JSON] NoContent
+  } deriving stock Generic
+```
+
+As you can see, we end up implementing the deepest routes of our API.
+
+Small detail: as our main API tree is also a record, we need the `NamedRoutes` helper.
+To improve readability, we suggest you create a type alias:
+
+``` haskell
+type MovieCatalogAPI = NamedRoutes API
+```
+
+That's it, we have our `MovieCatalogAPI` type!
+
+Let's make a server and a client out of it!
+
+### The Server
+
+As you know, we can’t talk about a server, without addressing the handlers.
+
+First, we take our handlers…
+
+```haskell
+versionHandler :: Handler Version
+versionHandler = pure "0.0.1"
+
+movieListHandler :: Maybe SortBy -> Handler [Movie]
+movieListHandler _ = pure moviesDB
+
+moviesDB :: [Movie]
+moviesDB =
+  [ Movie "1" "Se7en" 1995
+  , Movie "2" "Minority Report" 2002
+  , Movie "3" "The Godfather" 1972
+  ]
+
+getMovieHandler :: MovieId -> Handler (Maybe Movie)
+getMovieHandler requestMovieId = go moviesDB
+  where
+    go [] = pure Nothing
+    go (movie:ms) | movieId movie == requestMovieId = pure $ Just movie
+    go (m:ms) = go ms
+
+updateMovieHandler :: MovieId -> Movie -> Handler NoContent
+updateMovieHandler requestedMovieId newMovie =
+   -- update the movie list in the database...
+   pure NoContent
+
+deleteMovieHandler :: MovieId -> Handler NoContent
+deleteMovieHandler _ =
+   -- delete the movie from the database...
+   pure NoContent
+
+```
+
+And assemble them together with the record structure, which is the glue here.
+
+```haskell
+server :: ServerT MovieCatalogAPI  Handler
+server =
+  API
+    { version = versionHandler
+    , movies = moviesHandler
+    }
+
+moviesHandler :: MoviesAPI (AsServerT Handler)
+moviesHandler =
+  MoviesAPI
+    { list = movieListHandler
+    , movie = movieHandler
+    }
+
+movieHandler :: MovieId -> MovieAPI (AsServerT Handler)
+movieHandler movieId = MovieAPI
+    { get = getMovieHandler movieId
+    , update = updateMovieHandler movieId
+    , delete = deleteMovieHandler movieId
+    }
+```
+As you might have noticed, we build our handlers out of the same record types we used to define our API: `MoviesAPI` and `MovieAPI`. What kind of magic is this ?
+
+Remember the `mode` type parameter we saw earlier? Since we need to transform our API type into a _server_, we need to provide a server `mode`, which is `AsServerT Handler` here.
+
+Finally, we can run the server and connect the API routes to the handlers as usual:
+
+``` haskell
+api :: Proxy MovieCatalogAPI
+api = Proxy
+
+main :: IO ()
+main = run 8081 app
+
+app :: Application
+app = serve api server
+
+```
+Yay! That’s done and we’ve got our server!
+
+## The Client
+
+The client, so to speak, is very easy to implement:
+
+``` haskell
+movieCatalogClient :: API (AsClientT ClientM)
+movieCatalogClient = client api -- remember: api: Proxy MovieCatalogAPI
+```
+
+Have you noticed the `mode` `AsClient ClientM`?
+
+We’ve also introduced some operators that help navigate through the nested records.
+
+`(//)` is used to jump from one record to another.
+`(/:)` is used to provide a parameter, whether it be a query param or a capture.
+
+Let’s use those nice helpers for our movie catalog:
+
+```haskell
+listMovies :: Maybe SortBy -> ClientM [Movie]
+listMovies sortBy = movieCatalogClient // movies // list /: sortBy
+
+getMovie :: MovieId -> ClientM (Maybe Movie)
+getMovie movieId = movieCatalogClient // movies // movie /: movieId // get
+
+updateMovie :: MovieId -> Movie -> ClientM NoContent
+updateMovie movieId newMovie = movieCatalogClient // movies // movie /: movieId // update /: newMovie
+
+deleteMovie :: MovieId -> ClientM NoContent
+deleteMovie movieId = movieCatalogClient // movies // movie /: movieId // delete
+```
+
+Done! We’ve got our client!
+
+## Conclusion
+
+We hope that you found this workbook helpful, and that you now feel more confident using the `NamedRoutes` technique.
+
+If you are interested in further understanding the built-in Servant combinators, see [Structuring APIs](https://docs.servant.dev/en/stable/cookbook/structuring-apis/StructuringApis.html).
+
+Since `NamedRoutes` is based on the Generic mechanism, you might want to have a look at [Sandy Maguire’s _Thinking with Types_ book](https://doku.pub/download/sandy-maguire-thinking-with-typesz-liborgpdf-4lo5ne7kdj0x).
--- a/doc/cookbook/managed-resource/managed-resource.cabal
+++ b/doc/cookbook/managed-resource/managed-resource.cabal
@ -1,30 +1,27 @@
-cabal-version:       2.2
-name:                cookbook-managed-resource
+name:                namedRoutes
 version:             0.1
-synopsis:            Simple managed resource cookbook example
+synopsis:            NamedRoutes - Generic servant API implementation cookbook example
 homepage:            http://docs.servant.dev/
-license:             BSD-3-Clause
+license:             BSD3
 license-file:        ../../../servant/LICENSE
 author:              Servant Contributors
 maintainer:          haskell-servant-maintainers@googlegroups.com
 build-type:          Simple
-tested-with:         GHC==9.4.2
+cabal-version:       >=1.10
+tested-with:         GHC==8.6.5, GHC==8.8.3, GHC ==8.10.1

-executable cookbook-managed-resource
-  main-is:             ManagedResource.lhs
+executable namedRoutes
+  main-is:             NamedRoutes.lhs
  build-depends:       base == 4.*
-                     , text >= 1.2
                     , aeson >= 1.2
+                     , text
                     , servant
                     , servant-client
+                     , servant-client-core
                     , servant-server
-                     , warp >= 3.2
                     , wai >= 3.2
-                     , http-types >= 0.12
-                     , markdown-unlit >= 0.4
-                     , http-client >= 0.5
-                     , transformers
-                     , resourcet
+                     , warp >= 3.2
+
  default-language:    Haskell2010
  ghc-options:         -Wall -pgmL markdown-unlit
  build-tool-depends: markdown-unlit:markdown-unlit
--- a/doc/cookbook/open-id-connect/OpenIdConnect.lhs
+++ b/doc/cookbook/open-id-connect/OpenIdConnect.lhs
@ -330,7 +330,7 @@ data Customer = Customer {
 ```

 Here is the code that displays the homepage.
-It should contain a link to the `/login` URL.
+It should contain a link to the the `/login` URL.
 When the user clicks on this link it will be redirected to Google login page
 with some generated information.

--- a/doc/cookbook/using-free-client/UsingFreeClient.lhs
+++ b/doc/cookbook/using-free-client/UsingFreeClient.lhs
@ -119,7 +119,7 @@ Now we can use `servant-client`'s internals to convert servant's `Request`
 to http-client's `Request`, and we can inspect it:

 ```haskell
-        req' <- I.defaultMakeClientRequest burl req
+        let req' = I.defaultMakeClientRequest burl req
        putStrLn $ "Making request: " ++ show req'
 ```

--- a/doc/cookbook/uverb/UVerb.lhs
+++ b/doc/cookbook/uverb/UVerb.lhs
@ -199,7 +199,7 @@ parsers in the hope that the ones that should will always error out so
 you can try until the right one returns a value.)

 [servant-exceptions](https://github.com/ch1bo/servant-exceptions) is
-another shot at the problem.  It is inspired by
+another shot at at the problem.  It is inspired by
 servant-checked-exceptions, so it may be worth taking a closer look.
 The README claims that
 [cardano-sl](https://github.com/input-output-hk/cardano-sl) also has
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@ -1,4 +1,3 @@
 recommonmark==0.5.0
 Sphinx==1.8.4
 sphinx_rtd_theme>=0.4.2
-jinja2<3.1.0
--- a/doc/tutorial/install.rst
+++ b/doc/tutorial/install.rst
@ -40,29 +40,3 @@ nix
 `Nix <https://nixos.org/nix/>`_ users should feel free to take a look at
 the `nix/shell.nix` file in the repository and use it to provision a suitable
 environment to build and run the examples.
-
-Note for Ubuntu users
--------
-
-Ubuntu's packages for `ghc`, `cabal`, and `stack` are years out of date.
-If the instructions above fail for you,
-try replacing the Ubuntu packages with up-to-date versions.
-First remove the installed versions:
-
-.. code-block:: bash
-
-   # remove the obsolete versions
-   $ sudo apt remove ghc haskell-stack cabal-install
-
-Then install fresh versions of the Haskell toolchain
-using the `ghcup <https://www.haskell.org/ghcup/install/>`_ installer.
-
-As of February 2022, one easy way to do this is by running a bootstrap script:
-
-.. code-block:: bash
-
-   $ curl --proto '=https' --tlsv1.2 -sSf https://get-ghcup.haskell.org | sh
-
-The script is interactive and will prompt you for details about what
-you want installed and where.  To install manually,
-see `the detailed instructions <https://www.haskell.org/ghcup/install/#manual-install>`_.
--- a/doc/tutorial/tutorial.cabal
+++ b/doc/tutorial/tutorial.cabal
@ -64,7 +64,7 @@ library
    , blaze-markup >= 0.8.0.0 && < 0.9
    , cookie       >= 0.4.3   && < 0.5
    , js-jquery    >= 3.3.1   && < 3.4
-    , lucid        >= 2.9.11  && < 2.12
+    , lucid        >= 2.9.11  && < 2.10
    , random       >= 1.1     && < 1.3
    , servant-js   >= 0.9     && < 0.10
    , time         >= 1.6.0.1 && < 1.13
--- a/servant-auth/servant-auth-client/servant-auth-client.cabal
+++ b/servant-auth/servant-auth-client/servant-auth-client.cabal
@ -7,9 +7,9 @@ description:    This package provides instances that allow generating clients fr
                APIs that use
                <https://hackage.haskell.org/package/servant-auth servant-auth's> @Auth@ combinator.
                .
-                For a quick overview of the usage, see the <https://github.com/haskell-servant/servant/tree/master/servant-auth#readme README>.
+                For a quick overview of the usage, see the <http://github.com/haskell-servant/servant/servant-auth#readme README>.
 category:       Web, Servant, Authentication
-homepage:       https://github.com/haskell-servant/servant/tree/master/servant-auth#readme
+homepage:       http://github.com/haskell-servant/servant/servant-auth#readme
 bug-reports:    https://github.com/haskell-servant/servant/issues
 author:         Julian K. Arni
 maintainer:     jkarni@gmail.com
@ -31,8 +31,8 @@ library
  default-extensions: ConstraintKinds DataKinds DefaultSignatures DeriveFoldable DeriveFunctor DeriveGeneric DeriveTraversable FlexibleContexts FlexibleInstances FunctionalDependencies GADTs KindSignatures MultiParamTypeClasses OverloadedStrings RankNTypes ScopedTypeVariables TypeFamilies TypeOperators
  ghc-options: -Wall
  build-depends:
-      base                >= 4.10     && < 4.18
-    , bytestring          >= 0.10.6.0 && < 0.12
+      base                >= 4.10     && < 4.16
+    , bytestring          >= 0.10.6.0 && < 0.11
    , containers          >= 0.5.6.2  && < 0.7
    , servant-auth        == 0.4.*
    , servant             >= 0.13     && < 0.20
@ -50,7 +50,7 @@ test-suite spec
      test
  default-extensions: ConstraintKinds DataKinds DefaultSignatures DeriveFoldable DeriveFunctor DeriveGeneric DeriveTraversable FlexibleContexts FlexibleInstances FunctionalDependencies GADTs KindSignatures MultiParamTypeClasses OverloadedStrings RankNTypes ScopedTypeVariables TypeFamilies TypeOperators
  ghc-options: -Wall
-  build-tool-depends: hspec-discover:hspec-discover >=2.5.5 && <2.10
+  build-tool-depends: hspec-discover:hspec-discover >=2.5.5 && <2.9

  -- dependencies with bounds inherited from the library stanza
  build-depends:
@ -62,10 +62,10 @@ test-suite spec
 
  -- test dependencies
  build-depends:
-      hspec                >= 2.5.5    && < 2.10
+      hspec                >= 2.5.5    && < 2.9
    , QuickCheck           >= 2.11.3   && < 2.15
    , aeson                >= 1.3.1.1  && < 3
-    , bytestring           >= 0.10.6.0 && < 0.12
+    , bytestring           >= 0.10.6.0 && < 0.11
    , http-client          >= 0.5.13.1 && < 0.8
    , http-types           >= 0.12.2   && < 0.13
    , servant-auth-server  >= 0.4.2.0  && < 0.5
@ -74,7 +74,7 @@ test-suite spec
    , transformers         >= 0.4.2.0  && < 0.6
    , wai                  >= 3.2.1.2  && < 3.3
    , warp                 >= 3.2.25   && < 3.4
-    , jose                 >= 0.10     && < 0.11
+    , jose                 >= 0.7.0.0  && < 0.10
  other-modules:
      Servant.Auth.ClientSpec
  default-language: Haskell2010
--- a/servant-auth/servant-auth-docs/servant-auth-docs.cabal
+++ b/servant-auth/servant-auth-docs/servant-auth-docs.cabal
@ -7,9 +7,9 @@ description:    This package provides instances that allow generating docs from
                APIs that use
                <https://hackage.haskell.org/package/servant-auth servant-auth's> @Auth@ combinator.
                .
-                For a quick overview of the usage, see the <https://github.com/haskell-servant/servant/tree/master/servant-auth#readme README>.
+                For a quick overview of the usage, see the <http://github.com/haskell-servant/servant/servant-auth#readme README>.
 category:       Web, Servant, Authentication
-homepage:       https://github.com/haskell-servant/servant/tree/master/servant-auth#readme
+homepage:       http://github.com/haskell-servant/servant/servant-auth#readme
 bug-reports:    https://github.com/haskell-servant/servant/issues
 author:         Julian K. Arni
 maintainer:     jkarni@gmail.com
@ -35,11 +35,11 @@ library
  default-extensions: ConstraintKinds DataKinds DefaultSignatures DeriveFoldable DeriveFunctor DeriveGeneric DeriveTraversable FlexibleContexts FlexibleInstances FunctionalDependencies GADTs KindSignatures MultiParamTypeClasses OverloadedStrings RankNTypes ScopedTypeVariables TypeFamilies TypeOperators
  ghc-options: -Wall
  build-depends:
-      base         >= 4.10    && < 4.18
+      base         >= 4.10    && < 4.16
    , servant-docs >= 0.11.2  && < 0.13
    , servant      >= 0.13    && < 0.20
    , servant-auth == 0.4.*
-    , lens         >= 4.16.1  && <5.3
+    , lens         >= 4.16.1  && <5.2
  exposed-modules:
      Servant.Auth.Docs
  default-language: Haskell2010
@ -50,7 +50,7 @@ test-suite doctests
  build-depends:
    base,
    servant-auth-docs,
-    doctest             >= 0.16   && < 0.21,
+    doctest             >= 0.16   && < 0.19,
    QuickCheck          >= 2.11.3 && < 2.15,
    template-haskell
  ghc-options:         -Wall -threaded
@ -64,7 +64,7 @@ test-suite spec
      test
  default-extensions: ConstraintKinds DataKinds DefaultSignatures DeriveFoldable DeriveFunctor DeriveGeneric DeriveTraversable FlexibleContexts FlexibleInstances FunctionalDependencies GADTs KindSignatures MultiParamTypeClasses OverloadedStrings RankNTypes ScopedTypeVariables TypeFamilies TypeOperators
  ghc-options: -Wall
-  build-tool-depends: hspec-discover:hspec-discover >=2.5.5 && <2.10
+  build-tool-depends: hspec-discover:hspec-discover >=2.5.5 && <2.9

  -- dependencies with bounds inherited from the library stanza
  build-depends:
@ -78,7 +78,7 @@ test-suite spec
  -- test dependencies
  build-depends:
      servant-auth-docs
-    , hspec             >= 2.5.5  && < 2.10
+    , hspec             >= 2.5.5  && < 2.9
    , QuickCheck        >= 2.11.3 && < 2.15

  default-language: Haskell2010
--- a/servant-auth/servant-auth-server/servant-auth-server.cabal
+++ b/servant-auth/servant-auth-server/servant-auth-server.cabal
@ -7,9 +7,9 @@ description:    This package provides the required instances for using the @Auth
                .
                Both cookie- and token- (REST API) based authentication is provided.
                .
-                For a quick overview of the usage, see the <https://github.com/haskell-servant/servant/tree/master/servant-auth#readme README>.
+                For a quick overview of the usage, see the <http://github.com/haskell-servant/servant/servant-auth#readme README>.
 category:       Web, Servant, Authentication
-homepage:       https://github.com/haskell-servant/servant/tree/master/servant-auth#readme
+homepage:       http://github.com/haskell-servant/servant/servant-auth#readme
 bug-reports:    https://github.com/haskell-servant/servant/issues
 author:         Julian K. Arni
 maintainer:     jkarni@gmail.com
@ -31,27 +31,27 @@ library
  default-extensions: ConstraintKinds DataKinds DefaultSignatures DeriveFoldable DeriveFunctor DeriveGeneric DeriveTraversable FlexibleContexts FlexibleInstances FunctionalDependencies GADTs KindSignatures MultiParamTypeClasses OverloadedStrings RankNTypes ScopedTypeVariables TypeFamilies TypeOperators
  ghc-options: -Wall
  build-depends:
-      base                    >= 4.10     && < 4.18
+      base                    >= 4.10     && < 4.16
    , aeson                   >= 1.0.0.1  && < 3
    , base64-bytestring       >= 1.0.0.1  && < 2
    , blaze-builder           >= 0.4.1.0  && < 0.5
-    , bytestring              >= 0.10.6.0 && < 0.12
+    , bytestring              >= 0.10.6.0 && < 0.11
    , case-insensitive        >= 1.2.0.11 && < 1.3
    , cookie                  >= 0.4.4    && < 0.5
    , data-default-class      >= 0.1.2.0  && < 0.2
    , entropy                 >= 0.4.1.3  && < 0.5
    , http-types              >= 0.12.2   && < 0.13
-    , jose                    >= 0.10     && < 0.11
-    , lens                    >= 4.16.1   && < 5.3
-    , memory                  >= 0.14.16  && < 0.19
+    , jose                    >= 0.7.0.0  && < 0.10
+    , lens                    >= 4.16.1   && < 5.2
+    , memory                  >= 0.14.16  && < 0.17
    , monad-time              >= 0.3.1.0  && < 0.4
-    , mtl                     ^>= 2.2.2   || ^>= 2.3.1
+    , mtl                     >= 2.2.2    && < 2.3
    , servant                 >= 0.13     && < 0.20
    , servant-auth            == 0.4.*
    , servant-server          >= 0.13     && < 0.20
    , tagged                  >= 0.8.4    && < 0.9
    , text                    >= 1.2.3.0  && < 2.1
-    , time                    >= 1.5.0.1  && < 1.13
+    , time                    >= 1.5.0.1  && < 1.10
    , unordered-containers    >= 0.2.9.0  && < 0.3
    , wai                     >= 3.2.1.2  && < 3.3

@ -102,7 +102,7 @@ test-suite spec
      test
  default-extensions: ConstraintKinds DataKinds DefaultSignatures DeriveFoldable DeriveFunctor DeriveGeneric DeriveTraversable FlexibleContexts FlexibleInstances FunctionalDependencies GADTs KindSignatures MultiParamTypeClasses OverloadedStrings RankNTypes ScopedTypeVariables TypeFamilies TypeOperators
  ghc-options: -Wall
-  build-tool-depends: hspec-discover:hspec-discover >=2.5.5 && <2.10
+  build-tool-depends: hspec-discover:hspec-discover >=2.5.5 && <2.8

  -- dependencies with bounds inherited from the library stanza
  build-depends:
@ -123,10 +123,10 @@ test-suite spec
  -- test dependencies
  build-depends:
      servant-auth-server
-    , hspec       >= 2.5.5     && < 2.10
+    , hspec       >= 2.5.5     && < 2.8
    , QuickCheck  >= 2.11.3    && < 2.15
    , http-client >= 0.5.13.1  && < 0.8
-    , lens-aeson  >= 1.0.2     && < 1.3
+    , lens-aeson  >= 1.0.2     && < 1.2
    , warp        >= 3.2.25    && < 3.4
    , wreq        >= 0.5.2.1   && < 0.6
  other-modules:
--- a/servant-auth/servant-auth-server/src/Servant/Auth/Server/Internal/ConfigTypes.hs
+++ b/servant-auth/servant-auth-server/src/Servant/Auth/Server/Internal/ConfigTypes.hs
@ -33,7 +33,7 @@ data JWTSettings = JWTSettings
  -- | Algorithm used to sign JWT.
  , jwtAlg          :: Maybe Jose.Alg
  -- | Keys used to validate JWT.
-  , validationKeys  :: IO Jose.JWKSet
+  , validationKeys  :: Jose.JWKSet
  -- | An @aud@ predicate. The @aud@ is a string or URI that identifies the
  -- intended recipient of the JWT.
  , audienceMatches :: Jose.StringOrURI -> IsMatch
@ -44,7 +44,7 @@ defaultJWTSettings :: Jose.JWK -> JWTSettings
 defaultJWTSettings k = JWTSettings
   { signingKey = k
   , jwtAlg = Nothing
-   , validationKeys = pure $ Jose.JWKSet [k]
+   , validationKeys = Jose.JWKSet [k]
   , audienceMatches = const Matches }

 -- | The policies to use when generating cookies.
--- a/servant-auth/servant-auth-server/src/Servant/Auth/Server/Internal/Cookie.hs
+++ b/servant-auth/servant-auth-server/src/Servant/Auth/Server/Internal/Cookie.hs
@ -2,7 +2,6 @@
 module Servant.Auth.Server.Internal.Cookie where

 import           Blaze.ByteString.Builder (toByteString)
-import           Control.Monad (MonadPlus(..), guard)
 import           Control.Monad.Except
 import           Control.Monad.Reader
 import qualified Crypto.JOSE              as Jose
--- a/servant-auth/servant-auth-server/src/Servant/Auth/Server/Internal/JWT.hs
+++ b/servant-auth/servant-auth-server/src/Servant/Auth/Server/Internal/JWT.hs
@ -1,14 +1,18 @@
 module Servant.Auth.Server.Internal.JWT where

 import           Control.Lens
-import           Control.Monad (MonadPlus(..), guard)
+import           Control.Monad.Except
 import           Control.Monad.Reader
 import qualified Crypto.JOSE          as Jose
 import qualified Crypto.JWT           as Jose
+import           Data.Aeson           (FromJSON, Result (..), ToJSON, fromJSON,
+                                       toJSON)
 import           Data.ByteArray       (constEq)
 import qualified Data.ByteString      as BS
 import qualified Data.ByteString.Lazy as BSL
+import qualified Data.HashMap.Strict  as HM
 import           Data.Maybe           (fromMaybe)
+import qualified Data.Text            as T
 import           Data.Time            (UTCTime)
 import           Network.Wai          (requestHeaders)

@ -38,7 +42,7 @@ jwtAuthCheck jwtSettings = do
 -- token expires.
 makeJWT :: ToJWT a
  => a -> JWTSettings -> Maybe UTCTime -> IO (Either Jose.Error BSL.ByteString)
-makeJWT v cfg expiry = Jose.runJOSE $ do
+makeJWT v cfg expiry = runExceptT $ do
  bestAlg <- Jose.bestJWSAlg $ signingKey cfg
  let alg = fromMaybe bestAlg $ jwtAlg cfg
  ejwt <- Jose.signClaims (signingKey cfg)
@ -54,12 +58,11 @@ makeJWT v cfg expiry = Jose.runJOSE $ do

 verifyJWT :: FromJWT a => JWTSettings -> BS.ByteString -> IO (Maybe a)
 verifyJWT jwtCfg input = do
-  keys <- validationKeys jwtCfg
-  verifiedJWT <- Jose.runJOSE $ do
+  verifiedJWT <- liftIO $ runExceptT $ do
    unverifiedJWT <- Jose.decodeCompact (BSL.fromStrict input)
    Jose.verifyClaims
      (jwtSettingsToJwtValidationSettings jwtCfg)
-      keys
+      (validationKeys jwtCfg)
      unverifiedJWT
  return $ case verifiedJWT of
    Left (_ :: Jose.JWTError) -> Nothing
--- a/servant-auth/servant-auth-server/src/Servant/Auth/Server/Internal/Types.hs
+++ b/servant-auth/servant-auth-server/src/Servant/Auth/Server/Internal/Types.hs
@ -2,7 +2,6 @@
 module Servant.Auth.Server.Internal.Types where

 import Control.Applicative
-import Control.Monad        (MonadPlus(..), ap)
 import Control.Monad.Reader
 import Control.Monad.Time
 import Data.Monoid          (Monoid (..))
--- a/servant-auth/servant-auth-server/test/Servant/Auth/ServerSpec.hs
+++ b/servant-auth/servant-auth-server/test/Servant/Auth/ServerSpec.hs
@ -6,12 +6,13 @@ module Servant.Auth.ServerSpec (spec) where
 #endif

 import           Control.Lens
+import           Control.Monad.Except                (runExceptT)
 import           Control.Monad.IO.Class              (liftIO)
 import           Crypto.JOSE                         (Alg (HS256, None), Error,
                                                      JWK, JWSHeader,
                                                      KeyMaterialGenParam (OctGenParam),
                                                      ToCompact, encodeCompact,
-                                                      genJWK, newJWSHeader, runJOSE)
+                                                      genJWK, newJWSHeader)
 import           Crypto.JWT                          (Audience (..), ClaimsSet,
                                                      NumericDate (NumericDate),
                                                      SignedJWT,
@ -539,7 +540,7 @@ addJwtToHeader jwt = case jwt of
    $ defaults & header "Authorization" .~ ["Bearer " <> BSL.toStrict v]

 createJWT :: JWK -> JWSHeader () -> ClaimsSet -> IO (Either Error Crypto.JWT.SignedJWT)
-createJWT k a b = runJOSE $ signClaims k a b
+createJWT k a b = runExceptT $ signClaims k a b

 addJwtToCookie :: ToCompact a => CookieSettings -> Either Error a -> IO Options
 addJwtToCookie ccfg jwt = case jwt >>= (return . encodeCompact) of
--- a/servant-auth/servant-auth-swagger/servant-auth-swagger.cabal
+++ b/servant-auth/servant-auth-swagger/servant-auth-swagger.cabal
@ -7,9 +7,9 @@ description:    This package provides instances that allow generating swagger2 s
                APIs that use
                <https://hackage.haskell.org/package/servant-auth servant-auth's> @Auth@ combinator.
                .
-                For a quick overview of the usage, see the <https://github.com/haskell-servant/servant/tree/master/servant-auth#readme README>.
+                For a quick overview of the usage, see the <http://github.com/haskell-servant/servant/servant-auth#readme README>.
 category:       Web, Servant, Authentication
-homepage:       https://github.com/haskell-servant/servant/tree/master/servant-auth#readme
+homepage:       http://github.com/haskell-servant/servant/servant-auth#readme
 bug-reports:    https://github.com/haskell-servant/servant/issues
 author:         Julian K. Arni
 maintainer:     jkarni@gmail.com
@ -31,13 +31,15 @@ library
  default-extensions: ConstraintKinds DataKinds DefaultSignatures DeriveFoldable DeriveFunctor DeriveGeneric DeriveTraversable FlexibleContexts FlexibleInstances FunctionalDependencies GADTs KindSignatures MultiParamTypeClasses OverloadedStrings RankNTypes ScopedTypeVariables TypeFamilies TypeOperators
  ghc-options: -Wall
  build-depends:
-      base            >= 4.10    && < 4.18
+      base            >= 4.10    && < 4.16
    , text            >= 1.2.3.0 && < 2.1
    , servant-swagger >= 1.1.5   && < 2
    , swagger2        >= 2.2.2   && < 3
    , servant         >= 0.13    && < 0.20
    , servant-auth    == 0.4.*
-    , lens            >= 4.16.1  && < 5.3
+    , lens            >= 4.16.1  && < 5.2
+  if impl(ghc >= 9)
+    buildable: False
  exposed-modules:
      Servant.Auth.Swagger
  default-language: Haskell2010
@ -49,7 +51,7 @@ test-suite spec
      test
  default-extensions: ConstraintKinds DataKinds DefaultSignatures DeriveFoldable DeriveFunctor DeriveGeneric DeriveTraversable FlexibleContexts FlexibleInstances FunctionalDependencies GADTs KindSignatures MultiParamTypeClasses OverloadedStrings RankNTypes ScopedTypeVariables TypeFamilies TypeOperators
  ghc-options: -Wall
-  build-tool-depends: hspec-discover:hspec-discover >= 2.5.5 && <2.10
+  build-tool-depends: hspec-discover:hspec-discover >= 2.5.5 && <2.9
  -- dependencies with bounds inherited from the library stanza
  build-depends:
      base
@ -59,11 +61,13 @@ test-suite spec
    , servant
    , servant-auth
    , lens
+  if impl(ghc >= 9)
+    buildable: False
    
  -- test dependencies
  build-depends:
      servant-auth-swagger
-    , hspec      >= 2.5.5  && < 2.10
+    , hspec      >= 2.5.5  && < 2.9
    , QuickCheck >= 2.11.3 && < 2.15
  other-modules:
      Servant.Auth.SwaggerSpec
--- a/servant-auth/servant-auth/servant-auth.cabal
+++ b/servant-auth/servant-auth/servant-auth.cabal
@ -9,9 +9,9 @@ description:    This package provides an @Auth@ combinator for 'servant'. This c
                'servant-auth' additionally provides concrete authentication schemes, such
                as Basic Access Authentication, JSON Web Tokens, and Cookies.
                .
-                For more details on how to use this, see the <https://github.com/haskell-servant/servant/tree/master/servant-auth#readme README>.
+                For more details on how to use this, see the <http://github.com/haskell-servant/servant/servant-auth#readme README>.
 category:       Web, Servant, Authentication
-homepage:       https://github.com/haskell-servant/servant/tree/master/servant-auth#readme
+homepage:       http://github.com/haskell-servant/servant/servant-auth#readme
 bug-reports:    https://github.com/haskell-servant/servant/issues
 author:         Julian K. Arni
 maintainer:     jkarni@gmail.com
@ -33,11 +33,11 @@ library
  default-extensions: ConstraintKinds DataKinds DefaultSignatures DeriveFoldable DeriveFunctor DeriveGeneric DeriveTraversable FlexibleContexts FlexibleInstances FunctionalDependencies GADTs KindSignatures MultiParamTypeClasses OverloadedStrings RankNTypes ScopedTypeVariables TypeFamilies TypeOperators
  ghc-options: -Wall
  build-depends:
-      base                    >= 4.10     && < 4.18
+      base                    >= 4.10     && < 4.16
    , containers              >= 0.6      && < 0.7
    , aeson                   >= 1.3.1.1  && < 3
-    , jose                    >= 0.10     && < 0.11
-    , lens                    >= 4.16.1   && < 5.3
+    , jose                    >= 0.7.0.0  && < 0.10
+    , lens                    >= 4.16.1   && < 5.2
    , servant                 >= 0.15     && < 0.20
    , text                    >= 1.2.3.0  && < 2.1
    , unordered-containers    >= 0.2.9.0  && < 0.3
--- a/servant-auth/servant-auth/src/Servant/Auth.hs
+++ b/servant-auth/servant-auth/src/Servant/Auth.hs
@ -27,7 +27,7 @@ instance HasLink sub => HasLink (Auth (tag :: [*]) value :> sub) where

 -- ** Combinators

-- | A JSON Web Token (JWT) in the Authorization header:
+-- | A JSON Web Token (JWT) in the the Authorization header:
 --
 --    @Authorization: Bearer \<token\>@
 --
--- a/servant-client-core/servant-client-core.cabal
+++ b/servant-client-core/servant-client-core.cabal
@ -50,14 +50,14 @@ library
  --
  -- note: mtl lower bound is so low because of GHC-7.8
  build-depends:
-      base                  >= 4.9      && < 4.18
+      base                  >= 4.9      && < 4.16
    , bytestring            >= 0.10.8.1 && < 0.12
    , constraints           >= 0.2      && < 0.14
    , containers            >= 0.5.7.1  && < 0.7
    , deepseq               >= 1.4.2.0  && < 1.5
    , text                  >= 1.2.3.0  && < 2.1
-    , transformers          >= 0.5.2.0  && < 0.7
-    , template-haskell      >= 2.11.1.0 && < 2.20
+    , transformers          >= 0.5.2.0  && < 0.6
+    , template-haskell      >= 2.11.1.0 && < 2.18

  if !impl(ghc >= 8.2)
    build-depends:
@ -71,7 +71,7 @@ library
  -- Here can be exceptions if we really need features from the newer versions.
  build-depends:
      aeson                 >= 1.4.1.0  && < 3
-    , base-compat           >= 0.10.5   && < 0.13
+    , base-compat           >= 0.10.5   && < 0.12
    , base64-bytestring     >= 1.0.0.1  && < 1.3
    , exceptions            >= 0.10.0   && < 0.11
    , free                  >= 5.1      && < 5.2
@ -104,8 +104,8 @@ test-suite spec
  -- Additional dependencies
  build-depends:
      deepseq    >= 1.4.2.0  && < 1.5
-    , hspec      >= 2.6.0    && < 2.10
+    , hspec      >= 2.6.0    && < 2.9
    , QuickCheck >= 2.12.6.1 && < 2.15

  build-tool-depends:
-    hspec-discover:hspec-discover >= 2.6.0 && <2.10
+    hspec-discover:hspec-discover >= 2.6.0 && <2.9
--- a/servant-client-core/src/Servant/Client/Core.hs
+++ b/servant-client-core/src/Servant/Client/Core.hs
@ -59,7 +59,6 @@ module Servant.Client.Core
  , appendToPath
  , setRequestBodyLBS
  , setRequestBody
-  , encodeQueryParamValue
  ) where
 import           Servant.Client.Core.Auth
 import           Servant.Client.Core.BaseUrl
--- a/servant-client-core/src/Servant/Client/Core/HasClient.hs
+++ b/servant-client-core/src/Servant/Client/Core/HasClient.hs
@ -33,6 +33,8 @@ import           Control.Arrow
 import           Control.Monad
                 (unless)
 import qualified Data.ByteString as BS
+import           Data.ByteString.Builder
+                 (toLazyByteString)
 import qualified Data.ByteString.Lazy                     as BL
 import           Data.Either
                 (partitionEithers)
@ -77,7 +79,7 @@ import           Servant.API
                 NoContentVerb, QueryFlag, QueryParam', QueryParams, Raw,
                 ReflectMethod (..), RemoteHost, ReqBody', SBoolI, Stream,
                 StreamBody', Summary, ToHttpApiData, ToSourceIO (..), Vault,
-                 Verb, WithNamedContext, WithResource, WithStatus (..), contentType, getHeadersHList,
+                 Verb, WithNamedContext, WithStatus (..), contentType, getHeadersHList,
                 getResponse, toEncodedUrlPiece, toUrlPiece, NamedRoutes)
 import           Servant.API.Generic
                 (GenericMode(..), ToServant, ToServantApi
@ -208,7 +210,7 @@ instance (KnownSymbol capture, ToHttpApiData a, HasClient m api)
    clientWithRoute pm (Proxy :: Proxy api)
                    (appendToPath p req)

-    where p = toEncodedUrlPiece val
+    where p = (toUrlPiece val)

  hoistClientMonad pm _ f cl = \a ->
    hoistClientMonad pm (Proxy :: Proxy api) f (cl a)
@ -243,7 +245,7 @@ instance (KnownSymbol capture, ToHttpApiData a, HasClient m sublayout)
    clientWithRoute pm (Proxy :: Proxy sublayout)
                    (foldl' (flip appendToPath) req ps)

-    where ps = map toEncodedUrlPiece vals
+    where ps = map (toUrlPiece) vals

  hoistClientMonad pm _ f cl = \as ->
    hoistClientMonad pm (Proxy :: Proxy sublayout) f (cl as)
@ -569,7 +571,7 @@ instance (KnownSymbol sym, ToHttpApiData a, HasClient m api, SBoolI (FoldRequire
      (Proxy :: Proxy mods) add (maybe req add) mparam
    where
      add :: a -> Request
-      add param = appendToQueryString pname (Just $ encodeQueryParamValue param) req
+      add param = appendToQueryString pname (Just $ encodeQueryParam param) req

      pname :: Text
      pname  = pack $ symbolVal (Proxy :: Proxy sym)
@ -577,6 +579,9 @@ instance (KnownSymbol sym, ToHttpApiData a, HasClient m api, SBoolI (FoldRequire
  hoistClientMonad pm _ f cl = \arg ->
    hoistClientMonad pm (Proxy :: Proxy api) f (cl arg)

+encodeQueryParam :: ToHttpApiData a => a  -> BS.ByteString
+encodeQueryParam = BL.toStrict . toLazyByteString . toEncodedUrlPiece
+
 -- | If you use a 'QueryParams' in one of your endpoints in your API,
 -- the corresponding querying function will automatically take
 -- an additional argument, a list of values of the type specified
@ -618,7 +623,7 @@ instance (KnownSymbol sym, ToHttpApiData a, HasClient m api)
                    )

    where pname = pack $ symbolVal (Proxy :: Proxy sym)
-          paramlist' = map (Just . encodeQueryParamValue) paramlist
+          paramlist' = map (Just . encodeQueryParam) paramlist

  hoistClientMonad pm _ f cl = \as ->
    hoistClientMonad pm (Proxy :: Proxy api) f (cl as)
@ -740,7 +745,7 @@ instance (KnownSymbol path, HasClient m api) => HasClient m (path :> api) where
     clientWithRoute pm (Proxy :: Proxy api)
                     (appendToPath p req)

-    where p = toEncodedUrlPiece $ pack $ symbolVal (Proxy :: Proxy path)
+    where p = pack $ symbolVal (Proxy :: Proxy path)

  hoistClientMonad pm _ f cl = hoistClientMonad pm (Proxy :: Proxy api) f cl

@ -776,14 +781,6 @@ instance HasClient m subapi =>

  hoistClientMonad pm _ f cl = hoistClientMonad pm (Proxy :: Proxy subapi) f cl

-instance HasClient m subapi =>
-  HasClient m (WithResource res :> subapi) where
-
-  type Client m (WithResource res :> subapi) = Client m subapi
-  clientWithRoute pm Proxy = clientWithRoute pm (Proxy :: Proxy subapi)
-
-  hoistClientMonad pm _ f cl = hoistClientMonad pm (Proxy :: Proxy subapi) f cl
-
 instance ( HasClient m api
         ) => HasClient m (AuthProtect tag :> api) where
  type Client m (AuthProtect tag :> api)
@ -882,7 +879,7 @@ infixl 2 /:
 --
 -- Example:
 --
-- @
+-- @@
 -- type Api = NamedRoutes RootApi
 --
 -- data RootApi mode = RootApi
@ -902,8 +899,8 @@ infixl 2 /:
 -- rootClient = client api
 --
 -- endpointClient :: ClientM Person
-- endpointClient = client \/\/ subApi \/\/ endpoint
-- @
+-- endpointClient = client // subApi // endpoint
+-- @@
 (//) :: a -> (a -> b) -> b
 x // f = f x

@ -914,7 +911,7 @@ x // f = f x
 --
 -- Example:
 --
-- @
+-- @@
 -- type Api = NamedRoutes RootApi
 --
 -- data RootApi mode = RootApi
@ -935,11 +932,11 @@ x // f = f x
 -- rootClient = client api
 --
 -- hello :: String -> ClientM String
-- hello name = rootClient \/\/ hello \/: name
+-- hello name = rootClient // hello /: name
 --
 -- endpointClient :: ClientM Person
-- endpointClient = client \/\/ subApi \/: "foobar123" \/\/ endpoint
-- @
+-- endpointClient = client // subApi /: "foobar123" // endpoint
+-- @@
 (/:) :: (a -> b -> c) -> b -> a -> c
 (/:) = flip

--- a/servant-client-core/src/Servant/Client/Core/Request.hs
+++ b/servant-client-core/src/Servant/Client/Core/Request.hs
@ -17,7 +17,6 @@ module Servant.Client.Core.Request (
    addHeader,
    appendToPath,
    appendToQueryString,
-    encodeQueryParamValue,
    setRequestBody,
    setRequestBodyLBS,
    ) where
@ -34,8 +33,6 @@ import           Data.Bifunctor
 import           Data.Bitraversable
                 (Bitraversable (..), bifoldMapDefault, bimapDefault)
 import qualified Data.ByteString                      as BS
-import           Data.ByteString.Builder
-                 (Builder)
 import qualified Data.ByteString.Builder              as Builder
 import qualified Data.ByteString.Lazy                 as LBS
 import qualified Data.Sequence                        as Seq
@ -114,7 +111,7 @@ instance (NFData path, NFData body) => NFData (RequestF body path) where
        rnfB Nothing        = ()
        rnfB (Just (b, mt)) = rnf b `seq` mediaTypeRnf mt

-type Request = RequestF RequestBody Builder
+type Request = RequestF RequestBody Builder.Builder

 -- | The request body. R replica of the @http-client@ @RequestBody@.
 data RequestBody
@ -145,30 +142,18 @@ defaultRequest = Request
  , requestMethod = methodGet
  }

-- | Append extra path to the request being constructed.
--
-- Warning: This function assumes that the path fragment is already URL-encoded.
-appendToPath :: Builder -> Request -> Request
+appendToPath :: Text -> Request -> Request
 appendToPath p req
-  = req { requestPath = requestPath req <> "/" <> p }
+  = req { requestPath = requestPath req <> "/" <> toEncodedUrlPiece p }

-- | Append a query parameter to the request being constructed.
--
-appendToQueryString :: Text                -- ^ query param name
-                    -> Maybe BS.ByteString -- ^ query param value
+appendToQueryString :: Text             -- ^ param name
+                    -> Maybe BS.ByteString -- ^ param value
                    -> Request
                    -> Request
 appendToQueryString pname pvalue req
  = req { requestQueryString = requestQueryString req
                        Seq.|> (encodeUtf8 pname, pvalue)}

-- | Encode a query parameter value.
--
-encodeQueryParamValue :: ToHttpApiData a => a  -> BS.ByteString
-encodeQueryParamValue = LBS.toStrict . Builder.toLazyByteString . toEncodedUrlPiece
-
-- | Add header to the request being constructed.
--
 addHeader :: ToHttpApiData a => HeaderName -> a -> Request -> Request
 addHeader name val req
  = req { requestHeaders = requestHeaders req Seq.|> (name, toHeader val)}
--- a/servant-client-ghcjs/servant-client-ghcjs.cabal
+++ b/servant-client-ghcjs/servant-client-ghcjs.cabal
@ -48,7 +48,7 @@ library
    , http-media          >=0.6.2   && <0.9
    , http-types          >=0.12    && <0.13
    , monad-control       >=1.0.0.4 && <1.1
-    , mtl                 ^>=2.2.2  || ^>=2.3.1
+    , mtl                 >=2.2.2   && <2.3
    , semigroupoids       >=5.3     && <5.4
    , string-conversions  >=0.3     && <0.5
    , transformers        >=0.3     && <0.6
--- a/servant-client/servant-client.cabal
+++ b/servant-client/servant-client.cabal
@ -41,15 +41,15 @@ library
  -- Bundled with GHC: Lower bound to not force re-installs
  -- text and mtl are bundled starting with GHC-8.4
  build-depends:
-      base                  >= 4.9      && < 4.18
+      base                  >= 4.9      && < 4.16
    , bytestring            >= 0.10.8.1 && < 0.12
    , containers            >= 0.5.7.1  && < 0.7
    , deepseq               >= 1.4.2.0  && < 1.5
-    , mtl                   ^>= 2.2.2   || ^>= 2.3.1
+    , mtl                   >= 2.2.2    && < 2.3
    , stm                   >= 2.4.5.1  && < 2.6
    , text                  >= 1.2.3.0  && < 2.1
-    , time                  >= 1.6.0.1  && < 1.13
-    , transformers          >= 0.5.2.0  && < 0.7
+    , time                  >= 1.6.0.1  && < 1.10
+    , transformers          >= 0.5.2.0  && < 0.6

  if !impl(ghc >= 8.2)
    build-depends:
@ -64,7 +64,7 @@ library
  -- Other dependencies: Lower bound around what is in the latest Stackage LTS.
  -- Here can be exceptions if we really need features from the newer versions.
  build-depends:
-      base-compat           >= 0.10.5   && < 0.13
+      base-compat           >= 0.10.5   && < 0.12
    , http-client           >= 0.5.13.1 && < 0.8
    , http-media            >= 0.7.1.3  && < 0.9
    , http-types            >= 0.12.2   && < 0.13
@ -124,7 +124,7 @@ test-suite spec
  -- Additional dependencies
  build-depends:
      entropy           >= 0.4.1.3  && < 0.5
-    , hspec             >= 2.6.0    && < 2.10
+    , hspec             >= 2.6.0    && < 2.9
    , HUnit             >= 1.6.0.0  && < 1.7
    , network           >= 2.8.0.0  && < 3.2
    , QuickCheck        >= 2.12.6.1 && < 2.15
@ -133,7 +133,7 @@ test-suite spec
    , tdigest           >= 0.2     && < 0.3

  build-tool-depends:
-    hspec-discover:hspec-discover >= 2.6.0 && < 2.10
+    hspec-discover:hspec-discover >= 2.6.0 && < 2.9

 test-suite readme
  type:           exitcode-stdio-1.0
--- a/servant-client/src/Servant/Client/Internal/HttpClient.hs
+++ b/servant-client/src/Servant/Client/Internal/HttpClient.hs
@ -24,7 +24,7 @@ import           Control.Monad
 import           Control.Monad.Base
                 (MonadBase (..))
 import           Control.Monad.Catch
-                 (MonadCatch, MonadThrow, MonadMask)
+                 (MonadCatch, MonadThrow)
 import           Control.Monad.Error.Class
                 (MonadError (..))
 import           Control.Monad.IO.Class
@ -80,7 +80,7 @@ data ClientEnv
  { manager :: Client.Manager
  , baseUrl :: BaseUrl
  , cookieJar :: Maybe (TVar Client.CookieJar)
-  , makeClientRequest :: BaseUrl -> Request -> IO Client.Request
+  , makeClientRequest :: BaseUrl -> Request -> Client.Request
  -- ^ this function can be used to customize the creation of @http-client@ requests from @servant@ requests. Default value: 'defaultMakeClientRequest'
  --   Note that:
  --      1. 'makeClientRequest' exists to allow overriding operational semantics e.g. 'responseTimeout' per request,
@ -136,7 +136,7 @@ newtype ClientM a = ClientM
  { unClientM :: ReaderT ClientEnv (ExceptT ClientError IO) a }
  deriving ( Functor, Applicative, Monad, MonadIO, Generic
           , MonadReader ClientEnv, MonadError ClientError, MonadThrow
-           , MonadCatch, MonadMask)
+           , MonadCatch)

 instance MonadBase IO ClientM where
  liftBase = ClientM . liftBase
@ -162,7 +162,7 @@ runClientM cm env = runExceptT $ flip runReaderT env $ unClientM cm
 performRequest :: Maybe [Status] -> Request -> ClientM Response
 performRequest acceptStatus req = do
  ClientEnv m burl cookieJar' createClientRequest <- ask
-  clientRequest <- liftIO $ createClientRequest burl req
+  let clientRequest = createClientRequest burl req
  request <- case cookieJar' of
    Nothing -> pure clientRequest
    Just cj -> liftIO $ do
@ -229,8 +229,8 @@ clientResponseToResponse f r = Response
 -- | Create a @http-client@ 'Client.Request' from a @servant@ 'Request'
 --    The 'Client.host', 'Client.path' and 'Client.port' fields are extracted from the 'BaseUrl'
 --    otherwise the body, headers and query string are derived from the @servant@ 'Request'
-defaultMakeClientRequest :: BaseUrl -> Request -> IO Client.Request
-defaultMakeClientRequest burl r = return Client.defaultRequest
+defaultMakeClientRequest :: BaseUrl -> Request -> Client.Request
+defaultMakeClientRequest burl r = Client.defaultRequest
    { Client.method = requestMethod r
    , Client.host = fromString $ baseUrlHost burl
    , Client.port = baseUrlPort burl
@ -246,7 +246,7 @@ defaultMakeClientRequest burl r = return Client.defaultRequest
  where
    -- Content-Type and Accept are specified by requestBody and requestAccept
    headers = filter (\(h, _) -> h /= "Accept" && h /= "Content-Type") $
-        toList $ requestHeaders r
+        toList $requestHeaders r

    acceptHdr
        | null hs   = Nothing
@ -289,8 +289,7 @@ defaultMakeClientRequest burl r = return Client.defaultRequest
        Https -> True

    -- Query string builder which does not do any encoding
-    buildQueryString [] = mempty
-    buildQueryString qps = "?" <> foldl' addQueryParam mempty qps
+    buildQueryString = ("?" <>) . foldl' addQueryParam mempty

    addQueryParam qs (k, v) =
          qs <> (if BS.null qs then mempty else "&") <> urlEncode True k <> foldMap ("=" <>) v
--- a/servant-client/src/Servant/Client/Internal/HttpClient/Streaming.hs
+++ b/servant-client/src/Servant/Client/Internal/HttpClient/Streaming.hs
@ -24,8 +24,7 @@ import           Control.DeepSeq
                 (NFData, force)
 import           Control.Exception
                 (evaluate, throwIO)
-import           Control.Monad
-                 (unless)
+import           Control.Monad ()
 import           Control.Monad.Base
                 (MonadBase (..))
 import           Control.Monad.Codensity
@ -141,7 +140,7 @@ performRequest :: Maybe [Status] -> Request -> ClientM Response
 performRequest acceptStatus req = do
    -- TODO: should use Client.withResponse here too
  ClientEnv m burl cookieJar' createClientRequest <- ask
-  clientRequest <- liftIO $ createClientRequest burl req
+  let clientRequest = createClientRequest burl req
  request <- case cookieJar' of
    Nothing -> pure clientRequest
    Just cj -> liftIO $ do
@ -175,21 +174,10 @@ performRequest acceptStatus req = do
 -- | TODO: support UVerb ('acceptStatus' argument, like in 'performRequest' above).
 performWithStreamingRequest :: Request -> (StreamingResponse -> IO a) -> ClientM a
 performWithStreamingRequest req k = do
-  ClientEnv m burl cookieJar' createClientRequest <- ask
-  clientRequest <- liftIO $ createClientRequest burl req
-  request <- case cookieJar' of
-    Nothing -> pure clientRequest
-    Just cj -> liftIO $ do
-      now <- getCurrentTime
-      atomically $ do
-        oldCookieJar <- readTVar cj
-        let (newRequest, newCookieJar) =
-              Client.insertCookiesIntoRequest
-                clientRequest
-                oldCookieJar
-                now
-        writeTVar cj newCookieJar
-        pure newRequest
+  m <- asks manager
+  burl <- asks baseUrl
+  createClientRequest <- asks makeClientRequest
+  let request = createClientRequest burl req
  ClientM $ lift $ lift $ Codensity $ \k1 ->
      Client.withResponse request m $ \res -> do
          let status = Client.responseStatus res
--- a/servant-client/test/Servant/ClientTestUtils.hs
+++ b/servant-client/test/Servant/ClientTestUtils.hs
@ -160,7 +160,6 @@ type Api =
                                      WithStatus 301 Text]
  :<|> "uverb-get-created" :> UVerb 'GET '[PlainText] '[WithStatus 201 Person]
  :<|> NamedRoutes RecordRoutes
-  :<|> "captureVerbatim" :> Capture "someString" Verbatim :> Get '[PlainText] Text

 api :: Proxy Api
 api = Proxy
@ -215,8 +214,7 @@ getRoot
  :<|> EmptyClient
  :<|> uverbGetSuccessOrRedirect
  :<|> uverbGetCreated
-  :<|> recordRoutes
-  :<|> captureVerbatim = client api
+  :<|> recordRoutes = client api

 server :: Application
 server = serve api (
@ -261,7 +259,6 @@ server = serve api (
             { something = pure ["foo", "bar", "pweet"]
             }
         }
-  :<|> pure . decodeUtf8 . unVerbatim
  )

 -- * api for testing failures
@ -373,12 +370,3 @@ instance ToHttpApiData UrlEncodedByteString where

 instance FromHttpApiData UrlEncodedByteString where
    parseUrlPiece = pure . UrlEncodedByteString . HTTP.urlDecode True . encodeUtf8
-
-newtype Verbatim = Verbatim { unVerbatim :: ByteString }
-
-instance ToHttpApiData Verbatim where
-    toEncodedUrlPiece = byteString . unVerbatim
-    toUrlPiece = decodeUtf8 . unVerbatim
-
-instance FromHttpApiData Verbatim where
-    parseUrlPiece = pure . Verbatim . encodeUtf8
--- a/servant-client/test/Servant/SuccessSpec.hs
+++ b/servant-client/test/Servant/SuccessSpec.hs
@ -36,8 +36,6 @@ import           Data.Maybe
 import           Data.Monoid ()
 import           Data.Text
                 (Text)
-import           Data.Text.Encoding
-                 (encodeUtf8)
 import qualified Network.HTTP.Client                as C
 import qualified Network.HTTP.Types                 as HTTP
 import           Test.Hspec
@ -162,8 +160,7 @@ successSpec = beforeAll (startWaiApp server) $ afterAll endWaiApp $ do
      mgr <- C.newManager C.defaultManagerSettings
      -- In proper situation, extra headers should probably be visible in API type.
      -- However, testing for response timeout is difficult, so we test with something which is easy to observe
-      let createClientRequest url r = fmap (\req -> req { C.requestHeaders = [("X-Added-Header", "XXX")] })
-                                           (defaultMakeClientRequest url r)
+      let createClientRequest url r = (defaultMakeClientRequest url r) { C.requestHeaders = [("X-Added-Header", "XXX")] }
          clientEnv = (mkClientEnv mgr baseUrl) { makeClientRequest = createClientRequest }
      res <- runClientM (getRawSuccessPassHeaders HTTP.methodGet) clientEnv
      case res of
@ -199,10 +196,3 @@ successSpec = beforeAll (startWaiApp server) $ afterAll endWaiApp $ do
        case eitherResponse of
          Left clientError -> fail $ show clientError
          Right response -> matchUnion response `shouldBe` Just (WithStatus @201 carol)
-
-    it "encodes URL pieces following ToHttpApiData instance" $ \(_, baseUrl) -> do
-      let textOrig = "*"
-      eitherResponse <- runClient (captureVerbatim $ Verbatim $ encodeUtf8 textOrig) baseUrl
-      case eitherResponse of
-        Left clientError -> fail $ show clientError
-        Right textBack -> textBack `shouldBe` textOrig
--- a/servant-conduit/servant-conduit.cabal
+++ b/servant-conduit/servant-conduit.cabal
@ -23,7 +23,7 @@ extra-source-files:

 source-repository head
  type: git
-  location: http://github.com/haskell-servant/servant.git
+  location: http://github.com/haskell-servant/servant-conduit.git

 library
  exposed-modules:     Servant.Conduit
@ -31,8 +31,8 @@ library
      base          >=4.9      && <5
    , bytestring    >=0.10.8.1 && <0.12
    , conduit       >=1.3.1    && <1.4
-    , mtl           ^>=2.2.2   || ^>=2.3.1
-    , resourcet     >=1.2.2    && <1.4
+    , mtl           >=2.2.2    && <2.3
+    , resourcet     >=1.2.2    && <1.3
    , servant       >=0.15     && <0.20
    , unliftio-core >=0.1.2.0  && <0.3
  hs-source-dirs:      src
--- a/servant-docs/golden/comprehensive.md
+++ b/servant-docs/golden/comprehensive.md
@ -530,24 +530,6 @@

 ```

-## GET /resource
-
-### Response:
-
- Status code 200
- Headers: []
-
- Supported content types are:
-
-    - `application/json;charset=utf-8`
-    - `application/json`
-
- Example (`application/json;charset=utf-8`, `application/json`):
-
-```javascript
-
-```
-
 ## GET /streaming

 ### Request:
--- a/servant-docs/servant-docs.cabal
+++ b/servant-docs/servant-docs.cabal
@ -41,7 +41,7 @@ library
  --
  -- note: mtl lower bound is so low because of GHC-7.8
  build-depends:
-      base       >= 4.9      && < 4.18
+      base       >= 4.9      && < 4.16
    , bytestring >= 0.10.8.1 && < 0.12
    , text       >= 1.2.3.0  && < 2.1

@ -54,12 +54,12 @@ library
  build-depends:
      aeson                >= 1.4.1.0  && < 3
    , aeson-pretty         >= 0.8.5    && < 0.9
-    , base-compat          >= 0.10.5   && < 0.13
+    , base-compat          >= 0.10.5   && < 0.12
    , case-insensitive     >= 1.2.0.11 && < 1.3
    , hashable             >= 1.2.7.0  && < 1.5
    , http-media           >= 0.7.1.3  && < 0.9
    , http-types           >= 0.12.2   && < 0.13
-    , lens                 >= 4.17     && < 5.3
+    , lens                 >= 4.17     && < 5.2
    , string-conversions   >= 0.4.0.1  && < 0.5
    , universe-base        >= 1.1.1    && < 1.2
    , unordered-containers >= 0.2.9.0  && < 0.3
--- a/servant-docs/src/Servant/Docs/Internal.hs
+++ b/servant-docs/src/Servant/Docs/Internal.hs
@ -62,7 +62,6 @@ import           GHC.TypeLits
 import           Servant.API
 import           Servant.API.ContentTypes
 import           Servant.API.TypeLevel
-import           Servant.API.Generic

 import qualified Data.Universe.Helpers      as U

@ -447,7 +446,7 @@ docsWith opts intros (ExtraInfo endpoints) p =
      & apiEndpoints %~ HM.unionWith (flip combineAction) endpoints


-- | Generate the docs for a given API that implements 'HasDocs' with any
+-- | Generate the docs for a given API that implements 'HasDocs' with with any
 -- number of introduction(s)
 docsWithIntros :: HasDocs api => [DocIntro] -> Proxy api -> API
 docsWithIntros intros = docsWith defaultDocOptions intros mempty
@ -1144,9 +1143,6 @@ instance HasDocs api => HasDocs (Vault :> api) where
 instance HasDocs api => HasDocs (WithNamedContext name context api) where
  docsFor Proxy = docsFor (Proxy :: Proxy api)

-instance HasDocs api => HasDocs (WithResource res :> api) where
-  docsFor Proxy = docsFor (Proxy :: Proxy api)
-
 instance (ToAuthInfo (BasicAuth realm usr), HasDocs api) => HasDocs (BasicAuth realm usr :> api) where
  docsFor Proxy (endpoint, action) =
    docsFor (Proxy :: Proxy api) (endpoint, action')
@ -1154,9 +1150,6 @@ instance (ToAuthInfo (BasicAuth realm usr), HasDocs api) => HasDocs (BasicAuth r
        authProxy = Proxy :: Proxy (BasicAuth realm usr)
        action' = over authInfo (|> toAuthInfo authProxy) action

-instance HasDocs (ToServantApi api) => HasDocs (NamedRoutes api) where
-  docsFor Proxy = docsFor (Proxy :: Proxy (ToServantApi api))
-
 -- ToSample instances for simple types
 instance ToSample NoContent
 instance ToSample Bool
--- a/servant-foreign/servant-foreign.cabal
+++ b/servant-foreign/servant-foreign.cabal
@ -41,7 +41,7 @@ library
  --
  -- note: mtl lower bound is so low because of GHC-7.8
  build-depends:
-      base        >= 4.9     && < 4.18
+      base        >= 4.9     && < 4.16
    , text        >= 1.2.3.0 && < 2.1

  -- Servant dependencies
@ -51,8 +51,8 @@ library
  -- Other dependencies: Lower bound around what is in the latest Stackage LTS.
  -- Here can be exceptions if we really need features from the newer versions.
  build-depends:
-      base-compat >= 0.10.5  && < 0.13
-    , lens        >= 4.17    && < 5.3
+      base-compat >= 0.10.5  && < 0.12
+    , lens        >= 4.17    && < 5.2
    , http-types  >= 0.12.2  && < 0.13

  hs-source-dirs:      src
@ -74,7 +74,7 @@ test-suite spec

  -- Additional dependencies
  build-depends:
-    hspec >= 2.6.0 && <2.10
+    hspec >= 2.6.0 && <2.9
  build-tool-depends:
-    hspec-discover:hspec-discover >=2.6.0 && <2.10
+    hspec-discover:hspec-discover >=2.6.0 && <2.9
  default-language:  Haskell2010
--- a/servant-foreign/src/Servant/Foreign/Internal.hs
+++ b/servant-foreign/src/Servant/Foreign/Internal.hs
@ -487,13 +487,6 @@ instance HasForeign lang ftype api =>

  foreignFor lang ftype Proxy = foreignFor lang ftype (Proxy :: Proxy api)

-instance HasForeign lang ftype api =>
-  HasForeign lang ftype (WithResource res :> api) where
-
-  type Foreign ftype (WithResource res :> api) = Foreign ftype api
-
-  foreignFor lang ftype Proxy = foreignFor lang ftype (Proxy :: Proxy api)
-
 instance HasForeign lang ftype api
  => HasForeign lang ftype (HttpVersion :> api) where
  type Foreign ftype (HttpVersion :> api) = Foreign ftype api
--- a/servant-http-streams/servant-http-streams.cabal
+++ b/servant-http-streams/servant-http-streams.cabal
@ -38,14 +38,14 @@ library
  -- Bundled with GHC: Lower bound to not force re-installs
  -- text and mtl are bundled starting with GHC-8.4
  build-depends:
-      base                  >= 4.9      && < 4.18
+      base                  >= 4.9      && < 4.16
    , bytestring            >= 0.10.8.1 && < 0.12
    , containers            >= 0.5.7.1  && < 0.7
    , deepseq               >= 1.4.2.0  && < 1.5
-    , mtl                   ^>= 2.2.2   || ^>= 2.3.1
+    , mtl                   >= 2.2.2    && < 2.3
    , text                  >= 1.2.3.0  && < 2.1
-    , time                  >= 1.6.0.1  && < 1.13
-    , transformers          >= 0.5.2.0  && < 0.7
+    , time                  >= 1.6.0.1  && < 1.10
+    , transformers          >= 0.5.2.0  && < 0.6

  if !impl(ghc >= 8.2)
    build-depends:
@ -60,19 +60,19 @@ library
  -- Other dependencies: Lower bound around what is in the latest Stackage LTS.
  -- Here can be exceptions if we really need features from the newer versions.
  build-depends:
-      base-compat           >= 0.10.5   && < 0.13
+      base-compat           >= 0.10.5   && < 0.12
    , case-insensitive
    , http-streams          >= 0.8.6.1  && < 0.9
    , http-media            >= 0.7.1.3  && < 0.9
    , io-streams            >= 1.5.0.1  && < 1.6
    , http-types            >= 0.12.2   && < 0.13
-    , http-common           >= 0.8.2.0  && < 0.9
+    , http-common           >= 0.8.2.0  && < 0.8.3
    , exceptions            >= 0.10.0   && < 0.11
    , kan-extensions        >= 5.2      && < 5.3
    , monad-control         >= 1.0.2.3  && < 1.1
    , semigroupoids         >= 5.3.1    && < 5.4
    , transformers-base     >= 0.4.5.2  && < 0.5
-    , transformers-compat   >= 0.6.2    && < 0.8
+    , transformers-compat   >= 0.6.2    && < 0.7

  hs-source-dirs: src
  default-language: Haskell2010
@ -112,7 +112,7 @@ test-suite spec
  -- Additional dependencies
  build-depends:
      entropy           >= 0.4.1.3  && < 0.5
-    , hspec             >= 2.6.0    && < 2.10
+    , hspec             >= 2.6.0    && < 2.9
    , HUnit             >= 1.6.0.0  && < 1.7
    , network           >= 2.8.0.0  && < 3.2
    , QuickCheck        >= 2.12.6.1 && < 2.15
@ -121,7 +121,7 @@ test-suite spec
    , tdigest           >= 0.2     && < 0.3

  build-tool-depends:
-    hspec-discover:hspec-discover >= 2.6.0 && < 2.10
+    hspec-discover:hspec-discover >= 2.6.0 && < 2.9

 test-suite readme
  type:           exitcode-stdio-1.0
--- a/servant-machines/servant-machines.cabal
+++ b/servant-machines/servant-machines.cabal
@ -23,7 +23,7 @@ extra-source-files:

 source-repository head
  type: git
-  location: http://github.com/haskell-servant/servant.git
+  location: http://github.com/haskell-servant/servant-machines.git

 library
  exposed-modules:     Servant.Machines
@ -31,7 +31,7 @@ library
      base          >=4.9      && <5
    , bytestring    >=0.10.8.1 && <0.12
    , machines      >=0.6.4    && <0.8
-    , mtl           ^>=2.2.2   || ^>=2.3.1
+    , mtl           >=2.2.2    && <2.3
    , servant       >=0.15     && <0.20
  hs-source-dirs:      src
  default-language:    Haskell2010
--- a/servant-pipes/servant-pipes.cabal
+++ b/servant-pipes/servant-pipes.cabal
@ -23,7 +23,7 @@ extra-source-files:

 source-repository head
  type: git
-  location: http://github.com/haskell-servant/servant.git
+  location: http://github.com/haskell-servant/servant-pipes.git

 library
  exposed-modules:     Servant.Pipes
@ -32,7 +32,7 @@ library
    , bytestring    >=0.10.8.1 && <0.12
    , pipes         >=4.3.9    && <4.4
    , pipes-safe    >=2.3.1    && <2.4
-    , mtl           ^>=2.2.2   || ^>=2.3.1
+    , mtl           >=2.2.2    && <2.3
    , monad-control >=1.0.2.3  && <1.1
    , servant       >=0.15     && <0.20
  hs-source-dirs:      src
--- a/servant-server/CHANGELOG.md
+++ b/servant-server/CHANGELOG.md
@ -3,18 +3,6 @@

 Package versions follow the [Package Versioning Policy](https://pvp.haskell.org/): in A.B.C, bumps to either A or B represent major versions.

-0.19.2
------
-
-Compatibility with GHC 9.4, see [PR #1592](https://github.com/haskell-servant/servant/pull/1592).
-
-0.19.1
------
-
- Add `MonadFail` instance for `Handler` wrt [#1545](https://github.com/haskell-servant/servant/issues/1545)
- Support GHC 9.2 [#1525](https://github.com/haskell-servant/servant/issues/1525)
- Add capture hints in `Router` type for debug and display purposes [PR #1556] (https://github.com/haskell-servant/servant/pull/1556)
-
 0.19
 ----

--- a/servant-server/example/greet.hs
+++ b/servant-server/example/greet.hs
@ -18,6 +18,7 @@ import           Network.Wai.Handler.Warp

 import           Servant
 import           Servant.Server.Generic ()
+import           Servant.API.Generic

 -- * Example

--- a/servant-server/servant-server.cabal
+++ b/servant-server/servant-server.cabal
@ -1,6 +1,6 @@
 cabal-version:       2.2
 name:                servant-server
-version:             0.19.2
+version:             0.19

 synopsis:            A family of combinators for defining webservices APIs and serving them
 category:            Servant, Web
@ -23,7 +23,7 @@ author:              Servant Contributors
 maintainer:          haskell-servant-maintainers@googlegroups.com
 copyright:           2014-2016 Zalora South East Asia Pte Ltd, 2016-2019 Servant Contributors
 build-type:          Simple
-tested-with: GHC ==8.6.5 || ==8.8.4 || ==8.10.7 || ==9.0.2 || ==9.2.4 || ==9.4.3
+tested-with: GHC ==8.6.5 || ==8.8.4 || ==8.10.2 || ==9.0.1

 extra-source-files:
  CHANGELOG.md
@ -60,25 +60,25 @@ library
  -- Bundled with GHC: Lower bound to not force re-installs
  -- text and mtl are bundled starting with GHC-8.4
  build-depends:
-      base                >= 4.9      && < 4.18
+      base                >= 4.9      && < 4.16
    , bytestring          >= 0.10.8.1 && < 0.12
    , constraints         >= 0.2      && < 0.14
    , containers          >= 0.5.7.1  && < 0.7
-    , mtl                 ^>= 2.2.2   || ^>= 2.3.1
+    , mtl                 >= 2.2.2    && < 2.3
    , text                >= 1.2.3.0  && < 2.1
-    , transformers        >= 0.5.2.0  && < 0.7
+    , transformers        >= 0.5.2.0  && < 0.6
    , filepath            >= 1.4.1.1  && < 1.5

  -- Servant dependencies
  -- strict dependency as we re-export 'servant' things.
  build-depends:
-      servant             >= 0.19     && < 0.20
-    , http-api-data       >= 0.4.1    && < 0.5.1
+      servant             >= 0.19
+    , http-api-data       >= 0.4.1    && < 0.4.4

  -- Other dependencies: Lower bound around what is in the latest Stackage LTS.
  -- Here can be exceptions if we really need features from the newer versions.
  build-depends:
-      base-compat         >= 0.10.5   && < 0.13
+      base-compat         >= 0.10.5   && < 0.12
    , base64-bytestring   >= 1.0.0.1  && < 1.3
    , exceptions          >= 0.10.0   && < 0.11
    , http-media          >= 0.7.1.3  && < 0.9
@ -88,10 +88,10 @@ library
    , network             >= 2.8      && < 3.2
    , sop-core            >= 0.4.0.0  && < 0.6
    , string-conversions  >= 0.4.0.1  && < 0.5
-    , resourcet           >= 1.2.2    && < 1.4
+    , resourcet           >= 1.2.2    && < 1.3
    , tagged              >= 0.8.6    && < 0.9
    , transformers-base   >= 0.4.5.2  && < 0.5
-    , wai                 >= 3.2.2.1  && < 3.3
+    , wai                 >= 3.2.1.2  && < 3.3
    , wai-app-static      >= 3.1.6.2  && < 3.2
    , word8               >= 0.1.3    && < 0.2

@ -159,7 +159,7 @@ test-suite spec
  build-depends:
      aeson                >= 1.4.1.0  && < 3
    , directory            >= 1.3.0.0  && < 1.4
-    , hspec                >= 2.6.0    && < 2.10
+    , hspec                >= 2.6.0    && < 2.9
    , hspec-wai            >= 0.10.1   && < 0.12
    , QuickCheck           >= 2.12.6.1 && < 2.15
    , should-not-typecheck >= 2.1.0    && < 2.2
@ -167,4 +167,4 @@ test-suite spec
    , wai-extra            >= 3.0.24.3 && < 3.2

  build-tool-depends:
-    hspec-discover:hspec-discover >= 2.6.0 && <2.10
+    hspec-discover:hspec-discover >= 2.6.0 && <2.9
--- a/servant-server/src/Servant/Server.hs
+++ b/servant-server/src/Servant/Server.hs
@ -235,7 +235,7 @@ hoistServer p = hoistServerWithContext p (Proxy :: Proxy '[])
 -- > │  └─ e/
 -- > │     └─•
 -- > ├─ b/
-- > │  └─ <x::Int>/
+-- > │  └─ <capture>/
 -- > │     ├─•
 -- > │     ┆
 -- > │     └─•
@ -252,8 +252,7 @@ hoistServer p = hoistServerWithContext p (Proxy :: Proxy '[])
 --
 -- [@─•@] Leaves reflect endpoints.
 --
-- [@\<x::Int\>/@] This is a delayed capture of a single
-- path component named @x@, of expected type @Int@.
+-- [@\<capture\>/@] This is a delayed capture of a path component.
 --
 -- [@\<raw\>@] This is a part of the API we do not know anything about.
 --
--- a/servant-server/src/Servant/Server/Experimental/Auth.hs
+++ b/servant-server/src/Servant/Server/Experimental/Auth.hs
@ -1,6 +1,5 @@
 {-# OPTIONS_GHC -fno-warn-orphans #-}
 {-# LANGUAGE DeriveDataTypeable    #-}
-{-# LANGUAGE DeriveFunctor #-}
 {-# LANGUAGE DeriveGeneric         #-}
 {-# LANGUAGE FlexibleContexts      #-}
 {-# LANGUAGE FlexibleInstances     #-}
@ -45,7 +44,7 @@ type family AuthServerData a :: *
 -- NOTE: THIS API IS EXPERIMENTAL AND SUBJECT TO CHANGE
 newtype AuthHandler r usr = AuthHandler
  { unAuthHandler :: r -> Handler usr }
-  deriving (Functor, Generic, Typeable)
+  deriving (Generic, Typeable)

 -- | NOTE: THIS API IS EXPERIMENTAL AND SUBJECT TO CHANGE
 mkAuthHandler :: (r -> Handler usr) -> AuthHandler r usr
--- a/servant-server/src/Servant/Server/Internal.hs
+++ b/servant-server/src/Servant/Server/Internal.hs
@ -1,6 +1,5 @@
 {-# LANGUAGE AllowAmbiguousTypes   #-}
 {-# LANGUAGE ConstraintKinds       #-}
-{-# LANGUAGE CPP                   #-}
 {-# LANGUAGE DataKinds             #-}
 {-# LANGUAGE DeriveDataTypeable    #-}
 {-# LANGUAGE FlexibleContexts      #-}
@ -35,10 +34,9 @@ module Servant.Server.Internal
 import           Control.Monad
                 (join, when)
 import           Control.Monad.Trans
-                 (liftIO, lift)
+                 (liftIO)
 import           Control.Monad.Trans.Resource
-                 (runResourceT, ReleaseKey)
-import           Data.Acquire
+                 (runResourceT)
 import qualified Data.ByteString                            as B
 import qualified Data.ByteString.Builder                    as BB
 import qualified Data.ByteString.Char8                      as BC8
@ -78,7 +76,7 @@ import           Servant.API
                 QueryParam', QueryParams, Raw, ReflectMethod (reflectMethod),
                 RemoteHost, ReqBody', SBool (..), SBoolI (..), SourceIO,
                 Stream, StreamBody', Summary, ToSourceIO (..), Vault, Verb,
-                 WithNamedContext, WithResource, NamedRoutes)
+                 WithNamedContext, NamedRoutes)
 import           Servant.API.Generic (GenericMode(..), ToServant, ToServantApi, GServantProduct, toServant, fromServant)
 import           Servant.API.ContentTypes
                 (AcceptHeader (..), AllCTRender (..), AllCTUnrender (..),
@ -96,8 +94,6 @@ import           Servant.API.TypeErrors
 import           Web.HttpApiData
                 (FromHttpApiData, parseHeader, parseQueryParam, parseUrlPiece,
                 parseUrlPieces)
-import           Data.Kind
-                 (Type)

 import           Servant.Server.Internal.BasicAuth
 import           Servant.Server.Internal.Context
@ -116,10 +112,6 @@ import           Servant.API.TypeLevel
                 (AtLeastOneFragment, FragmentUnique)

 class HasServer api context where
-  -- | The type of a server for this API, given a monad to run effects in.
-  --
-  -- Note that the result kind is @*@, so it is /not/ a monad transformer, unlike
-  -- what the @T@ in the name might suggest.
  type ServerT api (m :: * -> *) :: *

  route ::
@ -181,7 +173,7 @@ instance (HasServer a context, HasServer b context) => HasServer (a :<|> b) cont
 -- > server = getBook
 -- >   where getBook :: Text -> Handler Book
 -- >         getBook isbn = ...
-instance (KnownSymbol capture, FromHttpApiData a, Typeable a
+instance (KnownSymbol capture, FromHttpApiData a
         , HasServer api context, SBoolI (FoldLenient mods)
         , HasContextEntry (MkContextWithErrorFormatter context) ErrorFormatters
         )
@ -193,7 +185,7 @@ instance (KnownSymbol capture, FromHttpApiData a, Typeable a
  hoistServerWithContext _ pc nt s = hoistServerWithContext (Proxy :: Proxy api) pc nt . s

  route Proxy context d =
-    CaptureRouter [hint] $
+    CaptureRouter $
        route (Proxy :: Proxy api)
              context
              (addCapture d $ \ txt -> withRequest $ \ request ->
@ -205,7 +197,6 @@ instance (KnownSymbol capture, FromHttpApiData a, Typeable a
    where
      rep = typeRep (Proxy :: Proxy Capture')
      formatError = urlParseErrorFormatter $ getContextEntry (mkContextWithErrorFormatter context)
-      hint = CaptureHint (T.pack $ symbolVal $ Proxy @capture) (typeRep (Proxy :: Proxy a))

 -- | If you use 'CaptureAll' in one of the endpoints for your API,
 -- this automatically requires your server-side handler to be a
@ -224,7 +215,7 @@ instance (KnownSymbol capture, FromHttpApiData a, Typeable a
 -- > server = getSourceFile
 -- >   where getSourceFile :: [Text] -> Handler Book
 -- >         getSourceFile pathSegments = ...
-instance (KnownSymbol capture, FromHttpApiData a, Typeable a
+instance (KnownSymbol capture, FromHttpApiData a
         , HasServer api context
         , HasContextEntry (MkContextWithErrorFormatter context) ErrorFormatters
         )
@ -236,7 +227,7 @@ instance (KnownSymbol capture, FromHttpApiData a, Typeable a
  hoistServerWithContext _ pc nt s = hoistServerWithContext (Proxy :: Proxy api) pc nt . s

  route Proxy context d =
-    CaptureAllRouter [hint] $
+    CaptureAllRouter $
        route (Proxy :: Proxy api)
              context
              (addCapture d $ \ txts -> withRequest $ \ request ->
@ -247,43 +238,6 @@ instance (KnownSymbol capture, FromHttpApiData a, Typeable a
    where
      rep = typeRep (Proxy :: Proxy CaptureAll)
      formatError = urlParseErrorFormatter $ getContextEntry (mkContextWithErrorFormatter context)
-      hint = CaptureHint (T.pack $ symbolVal $ Proxy @capture) (typeRep (Proxy :: Proxy [a]))
-
-- | If you use 'WithResource' in one of the endpoints for your API Servant
-- will provide the handler for this endpoint an argument of the specified type.
-- The lifespan of this resource will be automatically managed by Servant. This
-- resource will be created before the handler starts and it will be destoyed
-- after it ends. A new resource is created for each request to the endpoint.
-
-- The creation and destruction are done using a 'Data.Acquire.Acquire'
-- provided via server 'Context'.
--
-- Example
--
-- > type MyApi = WithResource Handle :> "writeToFile" :> Post '[JSON] NoContent
-- >
-- > server :: Server MyApi
-- > server = writeToFile
-- >   where writeToFile :: (ReleaseKey, Handle) -> Handler NoContent
-- >         writeToFile (_, h) = hPutStrLn h "message"
--
-- In addition to the resource, the handler will also receive a 'ReleaseKey'
-- which can be used to deallocate the resource before the end of the request
-- if desired.
-
-instance (HasServer api ctx, HasContextEntry ctx (Acquire a))
-      => HasServer (WithResource a :> api) ctx where
-
-  type ServerT (WithResource a :> api) m = (ReleaseKey, a) -> ServerT api m
-
-  hoistServerWithContext _ pc nt s = hoistServerWithContext (Proxy @api) pc nt . s
-
-  route Proxy context d = route (Proxy @api) context (d `addParameterCheck` allocateResource)
-    where
-      allocateResource :: DelayedIO (ReleaseKey, a)
-      allocateResource = DelayedIO $ lift $ allocateAcquire (getContextEntry context)
-
-

 allowedMethodHead :: Method -> Request -> Bool
 allowedMethodHead method request = method == methodGet && requestMethod request == methodHead
@ -865,11 +819,7 @@ instance (HasContextEntry context (NamedContext name subContext), HasServer subA
 -------------------------------------------------------------------------------

 -- Erroring instance for 'HasServer' when a combinator is not fully applied
-instance TypeError (PartialApplication 
-#if __GLASGOW_HASKELL__ >= 904
-                    @(Type -> [Type] -> Constraint) 
-#endif
-                    HasServer arr) => HasServer ((arr :: a -> b) :> sub) context
+instance TypeError (PartialApplication HasServer arr) => HasServer ((arr :: a -> b) :> sub) context
  where
    type ServerT (arr :> sub) _ = TypeError (PartialApplication (HasServer :: * -> [*] -> Constraint) arr)
    route = error "unreachable"
@ -913,11 +863,7 @@ type HasServerArrowTypeError a b =
 -- XXX: This omits the @context@ parameter, e.g.:
 --
 -- "There is no instance for HasServer (Bool :> …)". Do we care ?
-instance {-# OVERLAPPABLE #-} TypeError (NoInstanceForSub 
-#if __GLASGOW_HASKELL__ >= 904
-                                         @(Type -> [Type] -> Constraint) 
-#endif
-                                         HasServer ty) => HasServer (ty :> sub) context
+instance {-# OVERLAPPABLE #-} TypeError (NoInstanceForSub HasServer ty) => HasServer (ty :> sub) context

 instance {-# OVERLAPPABLE #-} TypeError (NoInstanceFor (HasServer api context)) => HasServer api context

--- a/servant-server/src/Servant/Server/Internal/Handler.hs
+++ b/servant-server/src/Servant/Server/Internal/Handler.hs
@ -13,19 +13,17 @@ import           Control.Monad.Base
 import           Control.Monad.Catch
                 (MonadCatch, MonadMask, MonadThrow)
 import           Control.Monad.Error.Class
-                 (MonadError, throwError)
+                 (MonadError)
 import           Control.Monad.IO.Class
                 (MonadIO)
 import           Control.Monad.Trans.Control
                 (MonadBaseControl (..))
 import           Control.Monad.Trans.Except
                 (ExceptT, runExceptT)
-import           Data.String
-                 (fromString)
 import           GHC.Generics
                 (Generic)
 import           Servant.Server.Internal.ServerError
-                 (ServerError, errBody, err500)
+                 (ServerError)

 newtype Handler a = Handler { runHandler' :: ExceptT ServerError IO a }
  deriving
@ -34,9 +32,6 @@ newtype Handler a = Handler { runHandler' :: ExceptT ServerError IO a }
    , MonadThrow, MonadCatch, MonadMask
    )

-instance MonadFail Handler where
-  fail str = throwError err500 { errBody = fromString str }
-
 instance MonadBase IO Handler where
  liftBase = Handler . liftBase

--- a/servant-server/src/Servant/Server/Internal/Router.hs
+++ b/servant-server/src/Servant/Server/Internal/Router.hs
@ -9,16 +9,12 @@ import           Prelude.Compat

 import           Data.Function
                 (on)
-import           Data.List
-                 (nub)
 import           Data.Map
                 (Map)
 import qualified Data.Map                                   as M
 import           Data.Text
                 (Text)
 import qualified Data.Text                                  as T
-import           Data.Typeable
-                 (TypeRep)
 import           Network.Wai
                 (Response, pathInfo)
 import           Servant.Server.Internal.ErrorFormatter
@ -28,21 +24,6 @@ import           Servant.Server.Internal.ServerError

 type Router env = Router' env RoutingApplication

-- | Holds information about pieces of url that are captured as variables.
-data CaptureHint = CaptureHint
-  { captureName :: Text
-  -- ^ Holds the name of the captured variable
-  , captureType :: TypeRep
-  -- ^ Holds the type of the captured variable
-  }
-  deriving (Show, Eq)
-
-toCaptureTag :: CaptureHint -> Text
-toCaptureTag hint = captureName hint <> "::" <> (T.pack . show) (captureType hint)
-
-toCaptureTags :: [CaptureHint] -> Text
-toCaptureTags hints = "<" <> T.intercalate "|" (map toCaptureTag hints) <> ">"
-
 -- | Internal representation of a router.
 --
 -- The first argument describes an environment type that is
@ -55,23 +36,12 @@ data Router' env a =
      -- ^ the map contains routers for subpaths (first path component used
      --   for lookup and removed afterwards), the list contains handlers
      --   for the empty path, to be tried in order
-  | CaptureRouter [CaptureHint] (Router' (Text, env) a)
+  | CaptureRouter (Router' (Text, env) a)
      -- ^ first path component is passed to the child router in its
-      --   environment and removed afterwards.
-      --   The first argument is a list of hints for all variables that can be
-      --   captured by the router. The fact that it is a list is counter-intuitive,
-      --   because the 'Capture' combinator only allows to capture a single varible,
-      --   with a single name and a single type. However, the 'choice' smart
-      --   constructor may merge two 'Capture' combinators with different hints, thus
-      --   forcing the type to be '[CaptureHint]'.
-      --   Because 'CaptureRouter' is built from a 'Capture' combinator, the list of
-      --   hints should always be non-empty.
-  | CaptureAllRouter [CaptureHint] (Router' ([Text], env) a)
+      --   environment and removed afterwards
+  | CaptureAllRouter (Router' ([Text], env) a)
      -- ^ all path components are passed to the child router in its
      --   environment and are removed afterwards
-      --   The first argument is a hint for the list of variables that can be
-      --   captured by the router. Note that the 'captureType' field of the hint
-      --   should always be '[a]' for some 'a'.
  | RawRouter     (env -> a)
      -- ^ to be used for routes we do not know anything about
  | Choice        (Router' env a) (Router' env a)
@ -99,8 +69,8 @@ leafRouter l = StaticRouter M.empty [l]
 choice :: Router' env a -> Router' env a -> Router' env a
 choice (StaticRouter table1 ls1) (StaticRouter table2 ls2) =
  StaticRouter (M.unionWith choice table1 table2) (ls1 ++ ls2)
-choice (CaptureRouter hints1 router1)   (CaptureRouter hints2 router2)   =
-  CaptureRouter (nub $ hints1 ++ hints2) (choice router1 router2)
+choice (CaptureRouter router1)   (CaptureRouter router2)   =
+  CaptureRouter (choice router1 router2)
 choice router1 (Choice router2 router3) = Choice (choice router1 router2) router3
 choice router1 router2 = Choice router1 router2

@ -114,11 +84,7 @@ choice router1 router2 = Choice router1 router2
 --
 data RouterStructure =
    StaticRouterStructure  (Map Text RouterStructure) Int
-  | CaptureRouterStructure [CaptureHint] RouterStructure
-  -- ^ The first argument holds information about variables
-  -- that are captured by the router. There may be several hints
-  -- if several routers have been aggregated by the 'choice'
-  -- smart constructor.
+  | CaptureRouterStructure RouterStructure
  | RawRouterStructure
  | ChoiceStructure        RouterStructure RouterStructure
  deriving (Eq, Show)
@ -132,11 +98,11 @@ data RouterStructure =
 routerStructure :: Router' env a -> RouterStructure
 routerStructure (StaticRouter m ls) =
  StaticRouterStructure (fmap routerStructure m) (length ls)
-routerStructure (CaptureRouter hints router) =
-  CaptureRouterStructure hints $
+routerStructure (CaptureRouter router) =
+  CaptureRouterStructure $
    routerStructure router
-routerStructure (CaptureAllRouter hints router) =
-  CaptureRouterStructure hints $
+routerStructure (CaptureAllRouter router) =
+  CaptureRouterStructure $
    routerStructure router
 routerStructure (RawRouter _) =
  RawRouterStructure
@ -148,8 +114,8 @@ routerStructure (Choice r1 r2) =
 -- | Compare the structure of two routers.
 --
 sameStructure :: Router' env a -> Router' env b -> Bool
-sameStructure router1 router2 =
-    routerStructure router1 == routerStructure router2
+sameStructure r1 r2 =
+  routerStructure r1 == routerStructure r2

 -- | Provide a textual representation of the
 -- structure of a router.
@ -160,8 +126,7 @@ routerLayout router =
  where
    mkRouterLayout :: Bool -> RouterStructure -> [Text]
    mkRouterLayout c (StaticRouterStructure m n) = mkSubTrees c (M.toList m) n
-    mkRouterLayout c (CaptureRouterStructure hints r) =
-      mkSubTree c (toCaptureTags hints) (mkRouterLayout False r)
+    mkRouterLayout c (CaptureRouterStructure r)  = mkSubTree c "<capture>" (mkRouterLayout False r)
    mkRouterLayout c  RawRouterStructure         =
      if c then ["├─ <raw>"] else ["└─ <raw>"]
    mkRouterLayout c (ChoiceStructure r1 r2)     =
@ -204,7 +169,7 @@ runRouterEnv fmt router env request respond  =
          -> let request' = request { pathInfo = rest }
             in  runRouterEnv fmt router' env request' respond
        _ -> respond $ Fail $ fmt request
-    CaptureRouter _ router' ->
+    CaptureRouter router' ->
      case pathInfo request of
        []   -> respond $ Fail $ fmt request
        -- This case is to handle trailing slashes.
@ -212,7 +177,7 @@ runRouterEnv fmt router env request respond  =
        first : rest
          -> let request' = request { pathInfo = rest }
             in  runRouterEnv fmt router' (first, env) request' respond
-    CaptureAllRouter _ router' ->
+    CaptureAllRouter router' ->
      let segments = pathInfo request
          request' = request { pathInfo = [] }
      in runRouterEnv fmt router' (segments, env) request' respond
--- a/servant-server/test/Servant/Server/RouterSpec.hs
+++ b/servant-server/test/Servant/Server/RouterSpec.hs
@ -9,9 +9,7 @@ import           Control.Monad
 import           Data.Proxy
                 (Proxy (..))
 import           Data.Text
-                 (Text, unpack)
-import           Data.Typeable
-                 (typeRep)
+                 (unpack)
 import           Network.HTTP.Types
                 (Status (..))
 import           Network.Wai
@ -29,7 +27,6 @@ spec :: Spec
 spec = describe "Servant.Server.Internal.Router" $ do
  routerSpec
  distributivitySpec
-  serverLayoutSpec

 routerSpec :: Spec
 routerSpec = do
@ -54,7 +51,7 @@ routerSpec = do
        toApp = toApplication . runRouter (const err404)

        cap :: Router ()
-        cap = CaptureRouter [hint] $
+        cap = CaptureRouter $
          let delayed = addCapture (emptyDelayed $ Route pure) (const $ delayedFail err400)
          in leafRouter
             $ \env req res ->
@ -62,9 +59,6 @@ routerSpec = do
                 . const
                 $ Route success

-        hint :: CaptureHint
-        hint = CaptureHint "anything" $ typeRep (Proxy :: Proxy ())
-
        router :: Router ()
        router = leafRouter (\_ _ res -> res $ Route success)
          `Choice` cap
@ -104,30 +98,12 @@ distributivitySpec =
    it "properly handles mixing static paths at different levels" $ do
      level `shouldHaveSameStructureAs` levelRef

-serverLayoutSpec :: Spec
-serverLayoutSpec =
-  describe "serverLayout" $ do
-    it "correctly represents the example API" $ do
-      exampleLayout `shouldHaveLayout` expectedExampleLayout
-    it "aggregates capture hints when different" $ do
-      captureDifferentTypes `shouldHaveLayout` expectedCaptureDifferentTypes
-    it "nubs capture hints when equal" $ do
-      captureSameType `shouldHaveLayout` expectedCaptureSameType
-    it "properly displays CaptureAll hints" $ do
-      captureAllLayout `shouldHaveLayout` expectedCaptureAllLayout
-
 shouldHaveSameStructureAs ::
  (HasServer api1 '[], HasServer api2 '[]) => Proxy api1 -> Proxy api2 -> Expectation
 shouldHaveSameStructureAs p1 p2 =
  unless (sameStructure (makeTrivialRouter p1) (makeTrivialRouter p2)) $
    expectationFailure ("expected:\n" ++ unpack (layout p2) ++ "\nbut got:\n" ++ unpack (layout p1))

-shouldHaveLayout ::
-  (HasServer api '[]) => Proxy api -> Text -> Expectation
-shouldHaveLayout p l =
-  unless (routerLayout (makeTrivialRouter p) == l) $
-    expectationFailure ("expected:\n" ++ unpack l ++ "\nbut got:\n" ++ unpack (layout p))
-
 makeTrivialRouter :: (HasServer layout '[]) => Proxy layout -> Router ()
 makeTrivialRouter p =
  route p EmptyContext (emptyDelayed (FailFatal err501))
@ -169,11 +145,11 @@ staticRef = Proxy

 type Dynamic =
       "a" :> Capture "foo" Int  :> "b" :> End
-  :<|> "a" :> Capture "foo" Int :> "c" :> End
-  :<|> "a" :> Capture "foo" Int :> "d" :> End
+  :<|> "a" :> Capture "bar" Bool :> "c" :> End
+  :<|> "a" :> Capture "baz" Char :> "d" :> End

 type DynamicRef =
-  "a" :> Capture "foo" Int :>
+  "a" :> Capture "anything" () :>
    ("b" :> End :<|> "c" :> End :<|> "d" :> End)

 dynamic :: Proxy Dynamic
@ -363,100 +339,3 @@ level = Proxy

 levelRef :: Proxy LevelRef
 levelRef = Proxy
-
-- The example API for the 'layout' function.
-- Should get factorized by the 'choice' smart constructor.
-type ExampleLayout =
-       "a" :> "d" :> Get '[JSON] NoContent
-  :<|> "b" :> Capture "x" Int :> Get '[JSON] Bool
-  :<|> "c" :> Put '[JSON] Bool
-  :<|> "a" :> "e" :> Get '[JSON] Int
-  :<|> "b" :> Capture "x" Int :> Put '[JSON] Bool
-  :<|> Raw
-
-exampleLayout :: Proxy ExampleLayout
-exampleLayout = Proxy
-
-- The expected representation of the example API layout
--
-expectedExampleLayout :: Text
-expectedExampleLayout =
-  "/\n\
-  \├─ a/\n\
-  \│  ├─ d/\n\
-  \│  │  └─•\n\
-  \│  └─ e/\n\
-  \│     └─•\n\
-  \├─ b/\n\
-  \│  └─ <x::Int>/\n\
-  \│     ├─•\n\
-  \│     ┆\n\
-  \│     └─•\n\
-  \├─ c/\n\
-  \│  └─•\n\
-  \┆\n\
-  \└─ <raw>\n"
-
-- A capture API with all capture types being the same
--
-type CaptureSameType =
-       "a" :> Capture "foo" Int :> "b" :> End
-  :<|> "a" :> Capture "foo" Int :> "c" :> End
-  :<|> "a" :> Capture "foo" Int :> "d" :> End
-
-captureSameType :: Proxy CaptureSameType
-captureSameType = Proxy
-
-- The expected representation of the CaptureSameType API layout.
--
-expectedCaptureSameType :: Text
-expectedCaptureSameType =
-  "/\n\
-  \└─ a/\n\
-  \   └─ <foo::Int>/\n\
-  \      ├─ b/\n\
-  \      │  └─•\n\
-  \      ├─ c/\n\
-  \      │  └─•\n\
-  \      └─ d/\n\
-  \         └─•\n"
-
-- A capture API capturing different types
--
-type CaptureDifferentTypes =
-       "a" :> Capture "foo" Int :> "b" :> End
-  :<|> "a" :> Capture "bar" Bool :> "c" :> End
-  :<|> "a" :> Capture "baz" Char :> "d" :> End
-
-captureDifferentTypes :: Proxy CaptureDifferentTypes
-captureDifferentTypes = Proxy
-
-- The expected representation of the CaptureDifferentTypes API layout.
--
-expectedCaptureDifferentTypes :: Text
-expectedCaptureDifferentTypes =
-  "/\n\
-  \└─ a/\n\
-  \   └─ <foo::Int|bar::Bool|baz::Char>/\n\
-  \      ├─ b/\n\
-  \      │  └─•\n\
-  \      ├─ c/\n\
-  \      │  └─•\n\
-  \      └─ d/\n\
-  \         └─•\n"
-
-- An API with a CaptureAll part
-
-type CaptureAllLayout = "a" :> CaptureAll "foos" Int :> End
-
-captureAllLayout :: Proxy CaptureAllLayout
-captureAllLayout = Proxy
-
-- The expected representation of the CaptureAllLayout API.
--
-expectedCaptureAllLayout :: Text
-expectedCaptureAllLayout =
-  "/\n\
-  \└─ a/\n\
-  \   └─ <foos::[Int]>/\n\
-  \      └─•\n"
--- a/servant-server/test/Servant/ServerSpec.hs
+++ b/servant-server/test/Servant/ServerSpec.hs
@ -21,8 +21,6 @@ import           Control.Monad.Error.Class
                 (MonadError (..))
 import           Data.Aeson
                 (FromJSON, ToJSON, decode', encode)
-import           Data.Acquire
-                 (Acquire, mkAcquire)
 import qualified Data.ByteString                   as BS
 import qualified Data.ByteString.Base64            as Base64
 import           Data.Char
@ -83,11 +81,8 @@ import           Servant.Server.Internal.Context
 -- This declaration simply checks that all instances are in place.
 _ = serveWithContext comprehensiveAPI comprehensiveApiContext

-comprehensiveApiContext :: Context '[NamedContext "foo" '[], Acquire Int]
-comprehensiveApiContext =
-  NamedContext EmptyContext :.
-  mkAcquire (pure 10) (\_ -> pure ()) :.
-  EmptyContext
+comprehensiveApiContext :: Context '[NamedContext "foo" '[]]
+comprehensiveApiContext = NamedContext EmptyContext :. EmptyContext

 -- * Specs

--- a/servant-swagger/servant-swagger.cabal
+++ b/servant-swagger/servant-swagger.cabal
@ -19,7 +19,7 @@ description:
  * generating clients and servers in many languages using [Swagger Codegen](http://swagger.io/swagger-codegen/);
  .
  * and [many others](http://swagger.io/open-source-integrations/).
-homepage:            https://github.com/haskell-servant/servant/tree/master/servant-swagger#readme
+homepage:            https://github.com/haskell-servant/servant/servant-swagger
 bug-reports:         https://github.com/haskell-servant/servant/issues
 license:             BSD-3-Clause
 license-file:        LICENSE
@ -50,7 +50,7 @@ source-repository head
 custom-setup
  setup-depends:
    base >=4.9 && <5,
-    Cabal >= 1.24,
+    Cabal >= 1.24 && < 3.5,
    cabal-doctest >=1.0.6 && <1.1

 library
@ -72,12 +72,12 @@ library
  build-depends:       aeson                     >=1.4.2.0 && <3
                     , aeson-pretty              >=0.8.7    && <0.9
                     , base                      >=4.9.1.0  && <5
-                     , base-compat               >=0.10.5   && <0.13
-                     , bytestring                >=0.10.8.1 && <0.12
+                     , base-compat               >=0.10.5   && <0.12
+                     , bytestring                >=0.10.8.1 && <0.11
                     , http-media                >=0.7.1.3  && <0.9
                     , insert-ordered-containers >=0.2.1.0  && <0.3
                     , lens                      >=4.17     && <6
-                     , servant                   >=0.18.2   && <0.20
+                     , servant                   >=0.18.1   && <0.20
                     , singleton-bool            >=0.1.4    && <0.2
                     , swagger2                  >=2.3.0.1  && <3
                     , text                      >=1.2.3.0  && <2.1
@ -92,7 +92,7 @@ test-suite doctests
  build-depends:
    base,
    directory >= 1.0,
-    doctest >= 0.17 && <0.21,
+    doctest >= 0.17 && <0.19,
    servant,
    QuickCheck,
    filepath
@ -106,14 +106,14 @@ test-suite spec
  type:             exitcode-stdio-1.0
  hs-source-dirs:   test
  main-is:          Spec.hs
-  build-tool-depends: hspec-discover:hspec-discover >=2.6.0 && <2.11
+  build-tool-depends: hspec-discover:hspec-discover >=2.6.0 && <2.8
  build-depends:    base
                  , base-compat
                  , aeson >=1.4.2.0 && <3
-                  , hspec >=2.6.0 && <2.11
+                  , hspec >=2.6.0 && <2.8
                  , QuickCheck
                  , lens
-                  , lens-aeson >=1.0.2    && <1.3
+                  , lens-aeson >=1.0.2    && <1.2
                  , servant
                  , servant-swagger
                  , swagger2
--- a/servant-swagger/src/Servant/Swagger.hs
+++ b/servant-swagger/src/Servant/Swagger.hs
@ -55,7 +55,6 @@ import           Servant.Swagger.Internal.Orphans ()
 -- >>> import Data.Typeable
 -- >>> import GHC.Generics
 -- >>> import Servant.API
-- >>> import System.Environment
 -- >>> import Test.Hspec
 -- >>> import Test.QuickCheck
 -- >>> import qualified Data.ByteString.Lazy.Char8 as BSL8
@ -65,7 +64,6 @@ import           Servant.Swagger.Internal.Orphans ()
 -- >>> :set -XGeneralizedNewtypeDeriving
 -- >>> :set -XOverloadedStrings
 -- >>> :set -XTypeOperators
-- >>> setEnv "HSPEC_COLOR" "no"
 -- >>> data User = User { name :: String, age :: Int } deriving (Show, Generic, Typeable)
 -- >>> newtype UserId = UserId Integer deriving (Show, Generic, Typeable, ToJSON)
 -- >>> instance ToJSON User
@ -162,11 +160,11 @@ import           Servant.Swagger.Internal.Orphans ()
 -- >>> instance Arbitrary UserId where arbitrary = UserId <$> arbitrary
 -- >>> hspec $ validateEveryToJSON (Proxy :: Proxy UserAPI)
 -- <BLANKLINE>
-- [User]...
+-- [User]
 -- ...
-- User...
+-- User
 -- ...
-- UserId...
+-- UserId
 -- ...
 -- Finished in ... seconds
 -- 3 examples, 0 failures
--- a/servant-swagger/src/Servant/Swagger/Internal.hs
+++ b/servant-swagger/src/Servant/Swagger/Internal.hs
@ -3,13 +3,11 @@
 {-# LANGUAGE DataKinds            #-}
 {-# LANGUAGE FlexibleContexts     #-}
 {-# LANGUAGE FlexibleInstances    #-}
-{-# LANGUAGE OverloadedLists      #-}
 {-# LANGUAGE OverloadedStrings    #-}
 {-# LANGUAGE PolyKinds            #-}
 {-# LANGUAGE RankNTypes           #-}
 {-# LANGUAGE ScopedTypeVariables  #-}
 {-# LANGUAGE TypeOperators        #-}
-{-# LANGUAGE TypeFamilies         #-}
 #if __GLASGOW_HASKELL__ >= 806
 {-# LANGUAGE UndecidableInstances #-}
 #endif
@ -32,13 +30,11 @@ import qualified Data.Swagger                           as Swagger
 import           Data.Swagger.Declare
 import           Data.Text                              (Text)
 import qualified Data.Text                              as Text
-import           GHC.Generics                           (D1, Meta(..), Rep)
 import           GHC.TypeLits
 import           Network.HTTP.Media                     (MediaType)
 import           Servant.API
 import           Servant.API.Description                (FoldDescription,
                                                         reflectDescription)
-import           Servant.API.Generic                    (ToServantApi, AsApi)
 import           Servant.API.Modifiers                  (FoldRequired)

 import           Servant.Swagger.Internal.TypeLevel.API
@ -153,10 +149,6 @@ mkEndpointNoContentVerb path _ = mempty
 addParam :: Param -> Swagger -> Swagger
 addParam param = allOperations.parameters %~ (Inline param :)

-- | Add a tag to every operation in the spec.
-addTag :: Text -> Swagger -> Swagger
-addTag tag = allOperations.tags %~ ([tag] <>)
-
 -- | Add accepted content types to every operation in the spec.
 addConsumes :: [MediaType] -> Swagger -> Swagger
 addConsumes cs = allOperations.consumes %~ (<> Just (MimeList cs))
@ -304,10 +296,6 @@ instance (HasSwagger sub) => HasSwagger (HttpVersion :> sub) where
 instance (HasSwagger sub) => HasSwagger (WithNamedContext x c sub) where
  toSwagger _ = toSwagger (Proxy :: Proxy sub)

-- | @'WithResource'@ combinator does not change our specification at all.
-instance (HasSwagger sub) => HasSwagger (WithResource res :> sub) where
-  toSwagger _ = toSwagger (Proxy :: Proxy sub)
-
 instance (KnownSymbol sym, HasSwagger sub) => HasSwagger (sym :> sub) where
  toSwagger _ = prependPath piece (toSwagger (Proxy :: Proxy sub))
    where
@ -451,9 +439,6 @@ instance (ToSchema a, Accept ct, HasSwagger sub, KnownSymbol (FoldDescription mo
        & required  ?~ True
        & schema    .~ ParamBody ref

-instance (HasSwagger (ToServantApi routes), KnownSymbol datatypeName, Rep (routes AsApi) ~ D1 ('MetaData datatypeName moduleName packageName isNewtype) f) => HasSwagger (NamedRoutes routes) where
-  toSwagger _ = addTag (Text.pack $ symbolVal (Proxy :: Proxy datatypeName)) (toSwagger (Proxy :: Proxy (ToServantApi routes)))
-
 -- =======================================================================
 -- Below are the definitions that should be in Servant.API.ContentTypes
 -- =======================================================================
--- a/servant-swagger/src/Servant/Swagger/Internal/Test.hs
+++ b/servant-swagger/src/Servant/Swagger/Internal/Test.hs
@ -29,12 +29,10 @@ import           Servant.Swagger.Internal.TypeLevel
 -- >>> import Control.Applicative
 -- >>> import GHC.Generics
 -- >>> import Test.QuickCheck
-- >>> import System.Environment (setEnv)
 -- >>> :set -XDeriveGeneric
 -- >>> :set -XGeneralizedNewtypeDeriving
 -- >>> :set -XDataKinds
 -- >>> :set -XTypeOperators
-- >>> setEnv "HSPEC_COLOR" "no"

 -- | Verify that every type used with @'JSON'@ content type in a servant API
 -- has compatible @'ToJSON'@ and @'ToSchema'@ instances using @'validateToJSON'@.
@ -55,10 +53,10 @@ import           Servant.Swagger.Internal.TypeLevel
 --
 -- >>> hspec $ context "ToJSON matches ToSchema" $ validateEveryToJSON (Proxy :: Proxy UserAPI)
 -- <BLANKLINE>
-- ToJSON matches ToSchema...
--   User...
+-- ToJSON matches ToSchema
+--   User
 -- ...
--   UserId...
+--   UserId
 -- ...
 -- Finished in ... seconds
 -- 2 examples, 0 failures
@ -120,11 +118,11 @@ validateEveryToJSONWithPatternChecker checker _ = props
 -- :}
 -- <BLANKLINE>
 -- read . show == id
--   Bool...
+--   Bool
 -- ...
--   Int...
+--   Int
 -- ...
--   [Char]...
+--   [Char]
 -- ...
 -- Finished in ... seconds
 -- 3 examples, 0 failures
--- a/servant/CHANGELOG.md
+++ b/servant/CHANGELOG.md
@ -2,11 +2,6 @@

 Package versions follow the [Package Versioning Policy](https://pvp.haskell.org/): in A.B.C, bumps to either A or B represent major versions.

-0.19.1
------
-
-Compatibility with GHC 9.4, see [PR #1592](https://github.com/haskell-servant/servant/pull/1592).
-
 0.19
 ----

--- a/servant/servant.cabal
+++ b/servant/servant.cabal
@ -1,6 +1,6 @@
 cabal-version:       2.2
 name:                servant
-version:             0.19.1
+version:             0.19

 synopsis:            A family of combinators for defining webservices APIs
 category:            Servant, Web
@ -62,7 +62,6 @@ library
    Servant.API.Vault
    Servant.API.Verbs
    Servant.API.WithNamedContext
-    Servant.API.WithResource

  -- Types
  exposed-modules:
@ -81,25 +80,25 @@ library
  --
  -- note: mtl lower bound is so low because of GHC-7.8
  build-depends:
-      base                   >= 4.9      && < 4.18
+      base                   >= 4.9      && < 4.16
    , bytestring             >= 0.10.8.1 && < 0.12
    , constraints            >= 0.2
-    , mtl                    ^>= 2.2.2   || ^>= 2.3.1
+    , mtl                    >= 2.2.2    && < 2.3
    , sop-core               >= 0.4.0.0  && < 0.6
-    , transformers           >= 0.5.2.0  && < 0.7
+    , transformers           >= 0.5.2.0  && < 0.6
    , text                   >= 1.2.3.0  && < 2.1


  -- We depend (heavily) on the API of these packages:
  -- i.e. re-export, or allow using without direct dependency
  build-depends:
-      http-api-data          >= 0.4.1    && < 0.5.1
+      http-api-data          >= 0.4.1    && < 0.4.4
    , singleton-bool         >= 0.1.4    && < 0.1.7

  -- Other dependencies: Lower bound around what is in the latest Stackage LTS.
  -- Here can be exceptions if we really need features from the newer versions.
  build-depends:
-      base-compat            >= 0.10.5   && < 0.13
+      base-compat            >= 0.10.5   && < 0.12
    , aeson                  >= 1.4.1.0  && < 3
    , attoparsec             >= 0.13.2.2 && < 0.15
    , bifunctors             >= 5.5.3    && < 5.6
@ -107,7 +106,7 @@ library
    , deepseq                >= 1.4.2.0  && < 1.5
    , http-media             >= 0.7.1.3  && < 0.9
    , http-types             >= 0.12.2   && < 0.13
-    , mmorph                 >= 1.1.2    && < 1.3
+    , mmorph                 >= 1.1.2    && < 1.2
    , network-uri            >= 2.6.1.0  && < 2.7
    , QuickCheck             >= 2.12.6.1 && < 2.15
    , string-conversions     >= 0.4.0.1  && < 0.5
@ -167,9 +166,9 @@ test-suite spec

  -- Additional dependencies
  build-depends:
-      hspec                >= 2.6.0    && < 2.10
+      hspec                >= 2.6.0    && < 2.9
    , QuickCheck           >= 2.12.6.1 && < 2.15
    , quickcheck-instances >= 0.3.19   && < 0.4

  build-tool-depends:
-    hspec-discover:hspec-discover >= 2.6.0 && < 2.10
+    hspec-discover:hspec-discover >= 2.6.0 && < 2.9
--- a/servant/src/Servant/API.hs
+++ b/servant/src/Servant/API.hs
@ -31,8 +31,6 @@ module Servant.API (
  -- | Access the location for arbitrary data to be shared by applications and middleware
  module Servant.API.WithNamedContext,
  -- | Access context entries in combinators in servant-server
-  module Servant.API.WithResource,
-  -- | Access a managed resource scoped to a single request

  -- * Actual endpoints, distinguished by HTTP method
  module Servant.API.Verbs,
@ -40,7 +38,6 @@ module Servant.API (

  -- * Sub-APIs defined as records of routes
  module Servant.API.NamedRoutes,
-  module Servant.API.Generic,

  -- * Streaming endpoints, distinguished by HTTP method
  module Servant.API.Stream,
@ -103,9 +100,6 @@ import           Servant.API.Experimental.Auth
                 (AuthProtect)
 import           Servant.API.Fragment
                 (Fragment)
-import           Servant.API.Generic
-                 (AsApi, GServantProduct, GenericMode ((:-)), GenericServant,
-                 ToServant, ToServantApi, fromServant, genericApi, toServant)
 import           Servant.API.Header
                 (Header, Header')
 import           Servant.API.HttpVersion
@ -114,8 +108,6 @@ import           Servant.API.IsSecure
                 (IsSecure (..))
 import           Servant.API.Modifiers
                 (Lenient, Optional, Required, Strict)
-import           Servant.API.NamedRoutes
-                 (NamedRoutes)
 import           Servant.API.QueryParam
                 (QueryFlag, QueryParam, QueryParam', QueryParams)
 import           Servant.API.Raw
@ -141,6 +133,8 @@ import           Servant.API.UVerb
                 Unique, WithStatus (..), inject, statusOf)
 import           Servant.API.Vault
                 (Vault)
+import           Servant.API.NamedRoutes
+                 (NamedRoutes)
 import           Servant.API.Verbs
                 (Delete, DeleteAccepted, DeleteNoContent,
                 DeleteNonAuthoritative, Get, GetAccepted, GetNoContent,
@ -152,8 +146,6 @@ import           Servant.API.Verbs
                 ReflectMethod (reflectMethod), StdMethod (..), Verb)
 import           Servant.API.WithNamedContext
                 (WithNamedContext)
-import           Servant.API.WithResource
-                 (WithResource)
 import           Servant.Links
                 (HasLink (..), IsElem, IsElem', Link, URI (..), safeLink)
 import           Web.HttpApiData
--- a/servant/src/Servant/API/ContentTypes.hs
+++ b/servant/src/Servant/API/ContentTypes.hs
@ -295,7 +295,7 @@ instance {-# OVERLAPPABLE #-}
 -- then this would be taken care of. However there is no more specific instance
 -- between that and 'MimeRender JSON a', so we do this instead
 instance {-# OVERLAPPING #-} ( Accept ctyp ) => AllMimeRender '[ctyp] NoContent where
-    allMimeRender _ NoContent = map (, "") $ NE.toList $ contentTypes pctyp
+    allMimeRender _ _ = map (, "") $ NE.toList $ contentTypes pctyp
      where
        pctyp = Proxy :: Proxy ctyp

--- a/servant/src/Servant/API/TypeLevel.hs
+++ b/servant/src/Servant/API/TypeLevel.hs
@ -110,7 +110,7 @@ type family IsElem' a s :: Constraint
 --
 -- >>> ok (Proxy :: Proxy (IsElem ("bye" :> Get '[JSON] Int) SampleAPI))
 -- ...
-- ... Could not ...
+-- ... Could not deduce...
 -- ...
 --
 -- An endpoint is considered within an api even if it is missing combinators
@ -151,7 +151,7 @@ type family IsElem endpoint api :: Constraint where
 --
 -- >>> ok (Proxy :: Proxy (IsSubAPI (SampleAPI :<|> Get '[JSON] Int) SampleAPI))
 -- ...
-- ... Could not ...
+-- ... Could not deduce...
 -- ...
 --
 -- This uses @IsElem@ for checking; thus the note there applies here.
@ -174,7 +174,7 @@ type family AllIsElem xs api :: Constraint where
 --
 -- >>> ok (Proxy :: Proxy (IsIn (Get '[JSON] Int) (Header "h" Bool :> Get '[JSON] Int)))
 -- ...
-- ... Could not ...
+-- ... Could not deduce...
 -- ...
 type family IsIn (endpoint :: *) (api :: *) :: Constraint where
  IsIn e (sa :<|> sb)                = Or (IsIn e sa) (IsIn e sb)
--- a/servant/src/Servant/API/UVerb.hs
+++ b/servant/src/Servant/API/UVerb.hs
@ -38,7 +38,6 @@ import GHC.TypeLits (Nat)
 import Network.HTTP.Types (Status, StdMethod)
 import Servant.API.ContentTypes (JSON, PlainText, FormUrlEncoded, OctetStream, NoContent, MimeRender(mimeRender), MimeUnrender(mimeUnrender))
 import Servant.API.Status (KnownStatus, statusVal)
-import Servant.API.ResponseHeaders (Headers)
 import Servant.API.UVerb.Union

 class KnownStatus (StatusOf a) => HasStatus (a :: *) where
@ -53,9 +52,6 @@ statusOf = const (statusVal (Proxy :: Proxy (StatusOf a)))
 instance HasStatus NoContent where
  type StatusOf NoContent = 204

-instance HasStatus a => HasStatus (Headers hs a) where
-  type StatusOf (Headers hs a) = StatusOf a
-
 class HasStatuses (as :: [*]) where
  type Statuses (as :: [*]) :: [Nat]
  statuses :: Proxy as -> [Status]
--- a/servant/src/Servant/API/UVerb/Union.hs
+++ b/servant/src/Servant/API/UVerb/Union.hs
@ -128,9 +128,9 @@ type DuplicateElementError (rs :: [k]) =
    ':$$: 'Text "    " ':<>: 'ShowType rs

 type family Elem (x :: k) (xs :: [k]) :: Bool where
-  Elem x (x ': _) = 'True
-  Elem x (_ ': xs) = Elem x xs
  Elem _ '[] = 'False
+  Elem x (x' ': xs) =
+    If (x == x') 'True (Elem x xs)

 type family Unique xs :: Constraint where
  Unique xs = If (Nubbed xs == 'True) (() :: Constraint) (TypeError (DuplicateElementError xs))
--- a/servant/src/Servant/API/WithResource.hs
+++ b/servant/src/Servant/API/WithResource.hs
@ -1,3 +0,0 @@
-module Servant.API.WithResource (WithResource) where
-
-data WithResource res
--- a/servant/src/Servant/Links.hs
+++ b/servant/src/Servant/Links.hs
@ -1,6 +1,5 @@
 {-# LANGUAGE AllowAmbiguousTypes    #-}
 {-# LANGUAGE ConstraintKinds        #-}
-{-# LANGUAGE CPP                    #-}
 {-# LANGUAGE DataKinds              #-}
 {-# LANGUAGE FlexibleContexts       #-}
 {-# LANGUAGE FlexibleInstances      #-}
@ -92,7 +91,7 @@
 -- >>> let bad_link = Proxy :: Proxy ("hello" :> Delete '[JSON] NoContent)
 -- >>> safeLink api bad_link
 -- ...
-- ...Could not ...
+-- ...Could not deduce...
 -- ...
 --
 --  This error is essentially saying that the type family couldn't find
@ -193,11 +192,7 @@ import           Servant.API.Verbs
                 (Verb, NoContentVerb)
 import           Servant.API.WithNamedContext
                 (WithNamedContext)
-import           Servant.API.WithResource
-                 (WithResource)
 import           Web.HttpApiData
-import           Data.Kind
-                 (Type)

 -- | A safe link datatype.
 -- The only way of constructing a 'Link' is using 'safeLink', which means any
@ -560,10 +555,6 @@ instance HasLink sub => HasLink (WithNamedContext name context sub) where
    type MkLink (WithNamedContext name context sub) a = MkLink sub a
    toLink toA _ = toLink toA (Proxy :: Proxy sub)

-instance HasLink sub => HasLink (WithResource res :> sub) where
-    type MkLink (WithResource res :> sub) a = MkLink sub a
-    toLink toA _ = toLink toA (Proxy :: Proxy sub)
-
 instance HasLink sub => HasLink (RemoteHost :> sub) where
    type MkLink (RemoteHost :> sub) a = MkLink sub a
    toLink = simpleToLink (Proxy :: Proxy sub)
@ -656,20 +647,12 @@ simpleToLink _ toA _ = toLink toA (Proxy :: Proxy sub)
 -- >>> import Data.Text (Text)

 -- Erroring instance for 'HasLink' when a combinator is not fully applied
-instance TypeError (PartialApplication 
-#if __GLASGOW_HASKELL__ >= 904
-                    @(Type -> Constraint) 
-#endif
-                    HasLink arr) => HasLink ((arr :: a -> b) :> sub)
+instance TypeError (PartialApplication HasLink arr) => HasLink ((arr :: a -> b) :> sub)
  where
    type MkLink (arr :> sub) _ = TypeError (PartialApplication (HasLink :: * -> Constraint) arr)
    toLink = error "unreachable"

 -- Erroring instances for 'HasLink' for unknown API combinators
-instance {-# OVERLAPPABLE #-} TypeError (NoInstanceForSub 
-#if __GLASGOW_HASKELL__ >= 904
-                                         @(Type -> Constraint) 
-#endif
-                                         HasLink ty) => HasLink (ty :> sub)
+instance {-# OVERLAPPABLE #-} TypeError (NoInstanceForSub HasLink ty) => HasLink (ty :> sub)

 instance {-# OVERLAPPABLE #-} TypeError (NoInstanceFor (HasLink api)) => HasLink api
--- a/servant/src/Servant/Test/ComprehensiveAPI.hs
+++ b/servant/src/Servant/Test/ComprehensiveAPI.hs
@ -72,7 +72,6 @@ type ComprehensiveAPIWithoutStreamingOrRaw' endpoint =
    :<|> "description"      :> Description "foo" :> GET
    :<|> "alternative"      :> ("left" :> GET :<|> "right" :> GET)
    :<|> "fragment"         :> Fragment Int :> GET
-    :<|> "resource"         :> WithResource Int :> GET
    :<|> endpoint

 type ComprehensiveAPIWithoutStreamingOrRaw = ComprehensiveAPIWithoutStreamingOrRaw' EmptyEndpoint
--- a/servant/src/Servant/Types/SourceT.hs
+++ b/servant/src/Servant/Types/SourceT.hs
@ -1,4 +1,3 @@
-{-# LANGUAGE CPP                 #-}
 {-# LANGUAGE DeriveFunctor       #-}
 {-# LANGUAGE GADTs               #-}
 {-# LANGUAGE RankNTypes          #-}
@ -155,10 +154,8 @@ instance (Applicative m, Show1 m, Show a) => Show (StepT m a) where
 -- | >>> lift [1,2,3] :: StepT [] Int
 -- Effect [Yield 1 Stop,Yield 2 Stop,Yield 3 Stop]
 --
-#if !MIN_VERSION_transformers(0,6,0)
 instance MonadTrans StepT where
    lift = Effect . fmap (`Yield` Stop)
-#endif

 instance MFunctor StepT where
    hoist f = go where
--- a/servant/test/Servant/API/ContentTypesSpec.hs
+++ b/servant/test/Servant/API/ContentTypesSpec.hs
@ -33,8 +33,6 @@ import           Data.String.Conversions
 import qualified Data.Text                                        as TextS
 import qualified Data.Text.Encoding                               as TextSE
 import qualified Data.Text.Lazy                                   as TextL
-import           Control.Exception
-                 (evaluate)
 import           GHC.Generics
 import           Test.Hspec
 import           Test.QuickCheck
@ -80,15 +78,6 @@ spec = describe "Servant.API.ContentTypes" $ do
        it "has mimeUnrender reverse mimeRender for valid top-level json " $ do
            property $ \x -> mimeUnrender p (mimeRender p x) == Right (x::SomeData)

-    describe "The NoContent Content-Type type" $ do
-        let p = Proxy :: Proxy '[JSON]
-
-        it "does not render any content" $
-          allMimeRender p NoContent `shouldSatisfy` (all (BSL8.null . snd))
-
-        it "evaluates the NoContent value" $
-          evaluate (allMimeRender p (undefined :: NoContent)) `shouldThrow` anyErrorCall
-
    describe "The PlainText Content-Type type" $ do
        let p = Proxy :: Proxy PlainText

--- a/servant/test/Servant/API/ResponseHeadersSpec.hs
+++ b/servant/test/Servant/API/ResponseHeadersSpec.hs
@ -2,14 +2,10 @@
 {-# LANGUAGE OverloadedStrings #-}
 module Servant.API.ResponseHeadersSpec where

-import           Data.Proxy
-import           GHC.TypeLits
 import           Test.Hspec

-import           Servant.API.ContentTypes
 import           Servant.API.Header
 import           Servant.API.ResponseHeaders
-import           Servant.API.UVerb

 spec :: Spec
 spec = describe "Servant.API.ResponseHeaders" $ do
@ -32,10 +28,3 @@ spec = describe "Servant.API.ResponseHeaders" $ do
    it "does not add a header" $ do
      let val = noHeader 5 :: Headers '[Header "test" Int] Int
      getHeaders val `shouldBe` []
-
-  describe "HasStatus Headers" $ do
-
-    it "gets the status from the underlying value" $ do
-      natVal (Proxy :: Proxy (StatusOf (Headers '[Header "first" Int] NoContent))) `shouldBe` 204
-      natVal (Proxy :: Proxy (StatusOf (Headers '[Header "first" Int] (WithStatus 503 ())))) `shouldBe` 503
-