Remove appveyor.yml.

Appveyor has been difficult to get working, due to timeouts, and
lately it has been failing for unknown reasons.

We don't need the appveyor build any more, now that we have Windows
CI, nightly, and release-candidate builds on GitHub actions.

README.md

@@ -15,8 +15,6 @@ package](http://stackage.org/package/pandoc/badge/lts)](http://stackage.org/lts/
 [![CircleCI](https://circleci.com/gh/jgm/pandoc.svg?style=svg)](https://circleci.com/gh/jgm/pandoc)
 [![CI
 tests](https://github.com/jgm/pandoc/workflows/CI%20tests/badge.svg)](https://github.com/jgm/pandoc/actions)
-[![appveyor build
-status](https://ci.appveyor.com/api/projects/status/nvqs4ct090igjiqc?svg=true)](https://ci.appveyor.com/project/jgm/pandoc)
 [![license](https://img.shields.io/badge/license-GPLv2+-lightgray.svg)](https://www.gnu.org/licenses/gpl.html)
 [![pandoc-discuss on google
 groups](https://img.shields.io/badge/pandoc-discuss-red.svg?style=social)](https://groups.google.com/forum/#!forum/pandoc-discuss)

README.template

@@ -12,7 +12,6 @@ Pandoc
 [![stackage LTS package](http://stackage.org/package/pandoc/badge/lts)](http://stackage.org/lts/package/pandoc)
 [![CircleCI](https://circleci.com/gh/jgm/pandoc.svg?style=svg)](https://circleci.com/gh/jgm/pandoc)
 [![CI tests](https://github.com/jgm/pandoc/workflows/CI%20tests/badge.svg)](https://github.com/jgm/pandoc/actions)
-[![appveyor build status](https://ci.appveyor.com/api/projects/status/nvqs4ct090igjiqc?svg=true)](https://ci.appveyor.com/project/jgm/pandoc)
 [![license](https://img.shields.io/badge/license-GPLv2+-lightgray.svg)](https://www.gnu.org/licenses/gpl.html)
 [![pandoc-discuss on google groups](https://img.shields.io/badge/pandoc-discuss-red.svg?style=social)](https://groups.google.com/forum/#!forum/pandoc-discuss)
 

appveyor.yml

@@ -1,96 +0,0 @@
-image: Visual Studio 2013
-clone_folder: "c:\\pandoc"
-environment:
-  global:
-    WIXBIN: "c:\\Program Files (x86)\\WiX Toolset v3.11\\bin"
-    CABAL_STORE: "C:\\cs"
-    CABAL_PACKAGE_DB: "%CABAL_STORE%\\ghc-%GHC_MINOR_VERSION%\\package.db"
-    APPVEYOR_SAVE_CACHE_ON_ERROR: true
-    # Override the temp directory to avoid sed escaping issues
-    # See https://github.com/haskell/cabal/issues/5386
-    TMP: "c:\\tmp"
-    # see #4201, https://github.com/haskell-tools/haskell-tools/issues/277
-  matrix:
-  - OSARCH: "windows-x86_64"
-    GHC_VERSION: "8.6.4"
-    GHC_MINOR_VERSION: "8.6.4"
-    GHC: "C:\\ProgramData\\chocolatey\\lib\\ghc\\tools\\ghc-%GHC_MINOR_VERSION%\\bin\\ghc.exe"
-    CABAL_VERSION: "2.4.1.0"
-    CABAL_OPTS: "-fembed_data_files -fbibutils --verbose=2"
-    GHC_OPTS: "-fhide-source-paths"
-    ARCH: "x64"
-    CHOCO_OPTS: ""
-  - OSARCH: "windows-i386"
-    GHC_VERSION: "8.6.4"
-    GHC_MINOR_VERSION: "8.6.4"
-    GHC: "C:\\ProgramData\\chocolatey\\lib\\ghc\\tools\\ghc-%GHC_MINOR_VERSION%\\bin\\ghc.exe"
-    CABAL_VERSION: "2.4.1.0"
-    CABAL_OPTS: "-flua_32bits -fembed_data_files -fbibutils --verbose=2"
-    GHC_OPTS: "-fhide-source-paths"
-    ARCH: "x86"
-    CHOCO_OPTS: "--x86"
-
-skip_commits:
-  files:
-    - '*.md'
-    - '*.txt'
-    - '.travis.yml'
-    - 'Makefile'
-    - 'man/pandoc.1'
-    - 'linux/*'
-    - 'macos/*'
-
-matrix:
-  fast_finish: true
-
-cache:
-  - '%CABAL_STORE%'
-
-# Note: to reset build cache, do the following in JavaScript
-# console on appveyor:
-# $.ajax({ url: 'https://ci.appveyor.com/api/projects/jgm/pandoc/buildcache', type: 'DELETE'})
-
-# We don't do a normal C build, but build in test_script
-build: off
-
-install:
-  - choco install wixtoolset --version 3.11.1 %CHOCO_OPTS%
-  - choco install ghc --version %GHC_VERSION% --ignore-dependencies %CHOCO_OPTS%
-  - choco install cabal --version %CABAL_VERSION% --ignore-dependencies %CHOCO_OPTS%
-
-# before_test:
-
-test_script:
-  # Note: we manually create cabal store, because of a cabal bug:
-  # see https://github.com/haskell/cabal/issues/5516
-  - if not exist "%CABAL_PACKAGE_DB%" ( mkdir "%CABAL_PACKAGE_DB%" )
-  - cabal --store-dir="%CABAL_STORE%" --version
-  - cabal --store-dir="%CABAL_STORE%" new-update
-  - cabal --store-dir="%CABAL_STORE%" new-configure -w %GHC% --enable-tests %CABAL_OPTS% --ghc-options="%GHC_OPTS%" . pandoc-citeproc
-  - cabal --store-dir="%CABAL_STORE%" new-build . pandoc-citeproc
-  - cabal --store-dir="%CABAL_STORE%" new-test . pandoc-citeproc
-  - forfiles /P .\dist-newstyle /M pandoc*.exe /S /C "cmd /C copy @path C:\pandoc\windows"
-
-after_test:
-  # create msi and zip artifacts
-  - cd windows
-  - .\pandoc.exe -s --toc ..\MANUAL.txt -o MANUAL.html
-  - .\pandoc.exe -s ..\COPYING.md -o COPYING.rtf
-  - copy ..\COPYRIGHT COPYRIGHT.txt
-  - 7z a "pandoc-%OSARCH%.zip" pandoc.exe pandoc-citeproc.exe MANUAL.html COPYING.rtf
-  - |
-      set VERSION=
-      for /f "tokens=1-2 delims= " %%a in ('.\pandoc.exe --version') do ( if not defined VERSION set "VERSION=%%b" )
-      echo %VERSION%
-      "%WIXBIN%"\candle -arch %ARCH% -dVERSION=%VERSION% -dBINPATH=. *.wxs -out wixobj\
-      "%WIXBIN%"\light -sw1076 -ext WixUIExtension -ext WixUtilExtension -cultures:en-us -loc Pandoc-en-us.wxl -out "pandoc-%OSARCH%.msi" wixobj\*.wixobj
-
-# for debugging
-# on_finish:
-#   - ps: $blockRdp = $true; iex ((new-object net.webclient).DownloadString('https://raw.githubusercontent.com/appveyor/ci/master/scripts/enable-rdp.ps1'))
-
-artifacts:
-  - path: 'windows\pandoc-%OSARCH%.zip'
-    name: exe
-  - path: 'windows\pandoc-%OSARCH%.msi'
-    name: msi