b950503fd8
Interact.hs loads ghci from the src directory, specifying all the options needed to load pandoc modules (including specific package dependencies, which it gets by parsing dist/setup-config).
30 lines
1 KiB
Haskell
30 lines
1 KiB
Haskell
-- Get an interactive shell with the right packages to load
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-- pandoc modules.
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-- To use:
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-- runghc Interact.hs
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-- then,
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-- :l Text/Pandoc.hs
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-- (or whichever package you like)
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-- You must have first done a 'cabal configure' or 'cabal install'
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import System.Process
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import Distribution.Simple.LocalBuildInfo
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import Distribution.Package
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import Distribution.Version
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import Data.List (intercalate)
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main = do
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setupConfig' <- readFile "dist/setup-config"
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let setupConfig = read $ unlines $ drop 1 $ lines setupConfig'
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let (Just (ComponentLocalBuildInfo { componentPackageDeps = deps })) = libraryConfig setupConfig
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let packageSpecs = map (toPackageSpec . snd) deps
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let args = ["-cpp","-i../dist/build/autogen"] ++ concatMap (\p -> ["-package",p]) packageSpecs
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print args
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ph <- runProcess "ghci" args (Just "src") Nothing Nothing Nothing Nothing
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waitForProcess ph
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toPackageSpec pkg = pkgN ++ "-" ++ pkgV
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where (PackageName pkgN) = pkgName pkg
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pkgV = intercalate "." $ map show $ versionBranch $ pkgVersion pkg
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