如何在Appveyor中安装GHC并将其放置在路径中？

Question

I'm trying to install GHC on windows with the following script (and put ghc in path), but it fails when I try to run ghci --version . I think there is something wrong with the script.

install:
  - ps: Invoke-WebRequest "https://downloads.haskell.org/~ghc/8.0.2/ghc-8.0.2-i386-unknown-mingw32-win10.tar.xz" -OutFile "ghc-8.0.2-i386-unknown-mingw32-win10.tar.xz"
  - 7z x ghc-8.0.2-i386-unknown-mingw32-win10.tar.xz
  - ps: $env:path += "C:\projects\haskell-interactive-mode\ghc-8.0.2-i386-unknown-mingw32-win10.tar\ghc-8.0.2\bin"
  - ps: ghci --version

Answer 1

I tried your command on local Windows machine and I see that 7z x ghc-8.0.2-i386-unknown-mingw32-win10.tar.xz results in ghc-8.0.2-i386-unknown-mingw32-win10.tar file , not folder . If you unzip it further with 7z x ghc-8.0.2-i386-unknown-mingw32-win10.tar , it unzips into real folder named ghc-8.0.2 with bin subfolder and ghci.exe file.

However I think that simpler it would be use Chocolatey package . This works for me well:

  - choco install ghc
  - refreshenv
  - ghci --version