How to install system libraries on windows? #37

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1. hasufell commented on Sep 27, 2020

   

   hasufell

   on Sep 27, 2020

   Author

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   For cabal, I tried

       - name: Install system dependencies (windows)
         if: matrix.os == 'windows-latest'
         run: mingw64-pkg install zlib

   It failed with

   
   Run mingw64-pkg install zlib
   Bash environment variable found, are you sure you installed cabal and msys2 via chocolatey?
   At C:\ProgramData\chocolatey\lib\cabal.3.2.0.0\tools\mingw64-pkg.ps1:39 char:3
   +   throw ("Bash environment variable found, are you sure you installed ...
   +   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
       + CategoryInfo          : OperationStopped: (Bash environmen...via chocolatey?:String) [], RuntimeException
       + FullyQualifiedErrorId : Bash environment variable found, are you sure you installed cabal and msys2 via chocolat 
      ey?
    
   Error: Process completed with exit code 1.
   

   https://github.com/hasufell/stack2cabal/runs/1172870260?check_suite_focus=true#step:7:1
2. hazelweakly commented on Oct 1, 2020

   

   hazelweakly

   on Oct 1, 2020

   Contributor

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   This took way too long to figure out, but I think I have a minimal example here:

   jobs:
     zlib:
       runs-on: windows-latest
       steps:
         - uses: actions/checkout@v2
         - uses: msys2/setup-msys2@v2
           with:
             update: true
             install: zlib
         - uses: haskell-CI/setup@main
           with:
             ghc-version: 8.8.4
             cabal-version: 3.2.0.0
         - run: cabal update
         - run: cabal run

   (with a minimal hello-world of importing the zlib library to make sure I'm using something that needs zlib)

   I couldn't get mingw64-pkg working regardless of whether or not I installed msys2 via chocolatey or the action. This is the codepath that is causing it to fail. I'm not quite sure why it's there; although it seems to just be a wrapper around pacman -S $package_name, which would make its functionality equivalent to the setup-msys2 snippet above.

   👍React with 👍1Reacted by Ellie Hermaszewska
3. expipiplus1 commented on Nov 6, 2020

   

   expipiplus1

   on Nov 6, 2020

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   There's nothing Haskell specific about installing system packages.

   Cabal or stack just has to be informed about their include/lib locations, and DLL locations added to PATH.

   I've been using pkgconfiglite installed by chocolatey for some packages: https://github.com/expipiplus1/vulkan/blob/master/.github/workflows/ci.yml#L63 (in this action I install some dependencies for Cabal and Stack (near the end))