Cannot use "getDirectoryConents" function in stack project on Windows 10. I can in Stack ghci

[ahgibbons]

I'm having a problem listing the files in a directory on Windows 10. I am using the getDirectoryContents function located in the System.Directory (directory) package. When building the program Stack tries to install the time package and fails. The suggestion is to add MinGW+MSYS to the toolchain. However, when I use stack ghci I am able to use the getDirectoryContents function. Is there a reason why I cannot use the same function when building a program?

Steps to Reproduce:

1. Create new stack project with stack new getFiles
2. Add directory to the build-depends of the getFiles.cabal file.
3. Use the following code for Main.hs

module Main where

import Lib
import System.Directory
import System.Environment


main :: IO ()
main = do
  args <- getArgs
  let indir = head args
  files <- getDirectoryContents indir
  print files

1. Run stack build.

Expected:
I expected the program to compile.

Actual:
The program did not compile. Here is my error message:

PS C:\andrew\Haskell\timedebug> stack build
time-1.5.0.1: configure
Progress: 1/3
--  While building package time-1.5.0.1 using:
      C:\Users\andrew\AppData\Local\Temp\stack9168\time-1.5.0.1\.stack-work\dist\2672c1f3\setup\setup --builddir=.stack-work\dist\2672c1f3 configure --with-ghc=C:\Users\andrew\AppData\Local\Programs\stack\x86_64-windows\ghc-7.10.3\bin\ghc.exe --with-ghc-pkg=C:\Users\andrew\AppData\Local\Programs\stack\x86_64-windows\ghc-7.10.3\bin\ghc-pkg.exe --user --package-db=clear --package-db=global --package-db=C:\stack_root\snapshots\5fb55b82\pkgdb --libdir=C:\stack_root\snapshots\5fb55b82\lib --bindir=C:\stack_root\snapshots\5fb55b82\bin --datadir=C:\stack_root\snapshots\5fb55b82\share --libexecdir=C:\stack_root\snapshots\5fb55b82\libexec --sysconfdir=C:\stack_root\snapshots\5fb55b82\etc --docdir=C:\stack_root\snapshots\5fb55b82\doc\time-1.5.0.1 --htmldir=C:\stack_root\snapshots\5fb55b82\doc\time-1.5.0.1 --haddockdir=C:\stack_root\snapshots\5fb55b82\doc\time-1.5.0.1 --dependency=Win32=Win32-2.3.1.1-39aa18a188563287440e1fb568cb2ff0 --dependency=base=base-4.8.2.0-14035a44a8b95c6832da6dae1420f59e --dependency=deepseq=deepseq-1.4.1.1-2c33acf73357f514df72284dd4549b44
    Process exited with code: ExitFailure 1
    Logs have been written to: C:\Users\andrew\Dropbox\Haskell\timedebug\.stack-work\logs\time-1.5.0.1.log

    [1 of 1] Compiling Main             ( C:\Users\andrew\AppData\Local\Temp\stack9168\time-1.5.0.1\Setup.hs, C:\Users\andrew\AppData\Local\Temp\stack9168\time-1.5.0.1\.stack-work\dist\2672c1f3\setup\Main.o )
    Linking C:\Users\andrew\AppData\Local\Temp\stack9168\time-1.5.0.1\.stack-work\dist\2672c1f3\setup\setup.exe ...
    Configuring time-1.5.0.1...
    setup.exe: The package has a './configure' script. This requires a Unix
    compatibility toolchain such as MinGW+MSYS or Cygwin.

My stack version is:

Version 1.1.1, Git revision 990fbb1aec2f0badeaefe30788ac9309dc179f22 x86_64 hpack-0.14.0

Here is the output of stack build --verbose:

PS C:\Users\andrew\Dropbox\Haskell\timedebug> stack build
time-1.5.0.1: configure
Progress: 1/3
--  While building package time-1.5.0.1 using:
      C:\Users\andrew\AppData\Local\Temp\stack9168\time-1.5.0.1\.stack-work\dist\2672c1f3\setup\setup --builddir=.stack-work\dist\2672c1f3 configure --with-ghc=C:\Users\andrew\AppData\Local\Programs\stack\x86_64-windows\ghc-7.10.3\bin\ghc.exe --with-ghc-pkg=C:\Users\andrew\AppData\Local\Programs\stack\x86_64-windows\ghc-7.10.3\bin\ghc-pkg.exe --user --package-db=clear --package-db=global --package-db=C:\stack_root\snapshots\5fb55b82\pkgdb --libdir=C:\stack_root\snapshots\5fb55b82\lib --bindir=C:\stack_root\snapshots\5fb55b82\bin --datadir=C:\stack_root\snapshots\5fb55b82\share --libexecdir=C:\stack_root\snapshots\5fb55b82\libexec --sysconfdir=C:\stack_root\snapshots\5fb55b82\etc --docdir=C:\stack_root\snapshots\5fb55b82\doc\time-1.5.0.1 --htmldir=C:\stack_root\snapshots\5fb55b82\doc\time-1.5.0.1 --haddockdir=C:\stack_root\snapshots\5fb55b82\doc\time-1.5.0.1 --dependency=Win32=Win32-2.3.1.1-39aa18a188563287440e1fb568cb2ff0 --dependency=base=base-4.8.2.0-14035a44a8b95c6832da6dae1420f59e --dependency=deepseq=deepseq-1.4.1.1-2c33acf73357f514df72284dd4549b44
    Process exited with code: ExitFailure 1
    Logs have been written to: C:\Users\andrew\Dropbox\Haskell\timedebug\.stack-work\logs\time-1.5.0.1.log

    [1 of 1] Compiling Main             ( C:\Users\andrew\AppData\Local\Temp\stack9168\time-1.5.0.1\Setup.hs, C:\Users\andrew\AppData\Local\Temp\stack9168\time-1.5.0.1\.stack-work\dist\2672c1f3\setup\Main.o )
    Linking C:\Users\andrew\AppData\Local\Temp\stack9168\time-1.5.0.1\.stack-work\dist\2672c1f3\setup\setup.exe ...
    Configuring time-1.5.0.1...
    setup.exe: The package has a './configure' script. This requires a Unix
    compatibility toolchain such as MinGW+MSYS or Cygwin.
PS C:\Users\andrew\Dropbox\Haskell\timedebug> stack build --verbose
Version 1.0.5, Git revision 57eb614df50826f38b923e1892cda904288a8ec9 x86_64 hpack-0.12.0
2016-05-13 12:05:02.713483: [debug] Checking for project config at: C:\Users\andrew\Dropbox\Haskell\timedebug\stack.yaml @(stack_6z1PPTeQ1JiHDL7m2t2akP:Stack.Config src/Stack\Config.hs:779:9)
2016-05-13 12:05:02.715484: [debug] Loading project config file stack.yaml @(stack_6z1PPTeQ1JiHDL7m2t2akP:Stack.Config src/Stack\Config.hs:797:13)
2016-05-13 12:05:02.724490: [debug] Trying to decode C:\stack_root\build-plan-cache\x86_64-windows\lts-5.16.cache @(stack_6z1PPTeQ1JiHDL7m2t2akP:Data.Binary.VersionTagged src/Data\Binary\VersionTagged.hs:55:5)
2016-05-13 12:05:02.766519: [debug] Success decoding C:\stack_root\build-plan-cache\x86_64-windows\lts-5.16.cache @(stack_6z1PPTeQ1JiHDL7m2t2akP:Data.Binary.VersionTagged src/Data\Binary\VersionTagged.hs:64:13)
2016-05-13 12:05:02.767519: [debug] Getting system compiler version @(stack_6z1PPTeQ1JiHDL7m2t2akP:Stack.Setup src/Stack\Setup.hs:341:17)
2016-05-13 12:05:02.793539: [debug] Run process: ghc --info @(stack_6z1PPTeQ1JiHDL7m2t2akP:System.Process.Read src/System\Process\Read.hs:283:3)
2016-05-13 12:05:02.909613: [debug] Asking GHC for its version @(stack_6z1PPTeQ1JiHDL7m2t2akP:Stack.Setup.Installed src/Stack\Setup\Installed.hs:91:13)
2016-05-13 12:05:02.910614: [debug] Run process: ghc --numeric-version @(stack_6z1PPTeQ1JiHDL7m2t2akP:System.Process.Read src/System\Process\Read.hs:283:3)
2016-05-13 12:05:02.974656: [debug] Getting Cabal package version @(stack_6z1PPTeQ1JiHDL7m2t2akP:Stack.GhcPkg src/Stack\GhcPkg.hs:165:5)
2016-05-13 12:05:02.975658: [debug] Run process: ghc-pkg --no-user-package-db field --simple-output Cabal version @(stack_6z1PPTeQ1JiHDL7m2t2akP:System.Process.Read src/System\Process\Read.hs:283:3)
2016-05-13 12:05:03.147771: [debug] Resolving package entries @(stack_6z1PPTeQ1JiHDL7m2t2akP:Stack.Setup src/Stack\Setup.hs:221:5)
2016-05-13 12:05:03.150774: [debug] Getting global package database location @(stack_6z1PPTeQ1JiHDL7m2t2akP:Stack.GhcPkg src/Stack\GhcPkg.hs:48:5)
2016-05-13 12:05:03.152775: [debug] Run process: ghc-pkg --no-user-package-db list --global @(stack_6z1PPTeQ1JiHDL7m2t2akP:System.Process.Read src/System\Process\Read.hs:283:3)
2016-05-13 12:05:03.329892: [debug] Checking resolver: lts-5.16 @(stack_6z1PPTeQ1JiHDL7m2t2akP:Stack.Build.Source src/Stack\Build\Source.hs:159:17)
2016-05-13 12:05:03.330893: [debug] Trying to decode C:\stack_root\build-plan-cache\x86_64-windows\lts-5.16.cache @(stack_6z1PPTeQ1JiHDL7m2t2akP:Data.Binary.VersionTagged src/Data\Binary\VersionTagged.hs:55:5)
2016-05-13 12:05:03.380928: [debug] Success decoding C:\stack_root\build-plan-cache\x86_64-windows\lts-5.16.cache @(stack_6z1PPTeQ1JiHDL7m2t2akP:Data.Binary.VersionTagged src/Data\Binary\VersionTagged.hs:64:13)
2016-05-13 12:05:03.404942: [debug] Run process: ghc-pkg --global --no-user-package-db dump --expand-pkgroot @(stack_6z1PPTeQ1JiHDL7m2t2akP:System.Process.Read src/System\Process\Read.hs:283:3)
2016-05-13 12:05:03.646102: [debug] Ignoring package Win32 due to wanting version 2.3.1.1 instead of 2.3.1.0 @(stack_6z1PPTeQ1JiHDL7m2t2akP:Stack.Build.Installed src/Stack\Build\Installed.hs:189:5)
2016-05-13 12:05:03.647102: [debug] Ignoring package haskeline due to wanting version 0.7.2.3 instead of 0.7.2.1 @(stack_6z1PPTeQ1JiHDL7m2t2akP:Stack.Build.Installed src/Stack\Build\Installed.hs:189:5)
2016-05-13 12:05:03.649104: [debug] Ignoring package Cabal due to wanting version 1.22.8.0 instead of 1.22.5.0 @(stack_6z1PPTeQ1JiHDL7m2t2akP:Stack.Build.Installed src/Stack\Build\Installed.hs:189:5)
2016-05-13 12:05:03.652108: [debug] Run process: ghc-pkg --user --no-user-package-db --package-db C:\stack_root\snapshots\5fb55b82\pkgdb dump --expand-pkgroot @(stack_6z1PPTeQ1JiHDL7m2t2akP:System.Process.Read src/System\Process\Read.hs:283:3)
2016-05-13 12:05:03.825220: [debug] Run process: ghc-pkg --user --no-user-package-db --package-db C:\Users\andrew\Dropbox\Haskell\timedebug\.stack-work\install\0a2b75f2\pkgdb dump --expand-pkgroot @(stack_6z1PPTeQ1JiHDL7m2t2akP:System.Process.Read src/System\Process\Read.hs:283:3)
2016-05-13 12:05:03.999336: [debug] Trying to decode C:\stack_root\indices\Hackage\00-index.cache @(stack_6z1PPTeQ1JiHDL7m2t2akP:Data.Binary.VersionTagged src/Data\Binary\VersionTagged.hs:55:5)
2016-05-13 12:05:04.478658: [debug] Success decoding C:\stack_root\indices\Hackage\00-index.cache @(stack_6z1PPTeQ1JiHDL7m2t2akP:Data.Binary.VersionTagged src/Data\Binary\VersionTagged.hs:64:13)
2016-05-13 12:05:04.775851: [debug] Getting global package database location @(stack_6z1PPTeQ1JiHDL7m2t2akP:Stack.GhcPkg src/Stack\GhcPkg.hs:48:5)
2016-05-13 12:05:04.776856: [debug] Run process: ghc-pkg --no-user-package-db list --global @(stack_6z1PPTeQ1JiHDL7m2t2akP:System.Process.Read src/System\Process\Read.hs:283:3)
2016-05-13 12:05:05.270180: [info] time-1.5.0.1: configure @(stack_6z1PPTeQ1JiHDL7m2t2akP:Stack.Build.Execute src/Stack\Build\Execute.hs:731:23)
2016-05-13 12:05:05.324215: [debug] Run process: C:\Users\andrew\AppData\Local\Programs\stack\x86_64-windows\ghc-7.10.3\bin\ghc.exe --make -odir C:\Users\andrew\AppData\Local\Temp\stack7216\time-1.5.0.1\.stack-work\dist\2672c1f3\setup -hidir C:\Users\andrew\AppData\Local\Temp\stack7216\time-1.5.0.1\.stack-work\dist\2672c1f3\setup -i -i. -package=Cabal-1.22.5.0 -clear-package-db -global-package-db -package-db=C:\stack_root\snapshots\5fb55b82\pkgdb C:\Users\andrew\AppData\Local\Temp\stack7216\time-1.5.0.1\Setup.hs -o C:\Users\andrew\AppData\Local\Temp\stack7216\time-1.5.0.1\.stack-work\dist\2672c1f3\setup\setup @(stack_6z1PPTeQ1JiHDL7m2t2akP:System.Process.Read src/System\Process\Read.hs:301:3)
2016-05-13 12:05:20.238110: [debug] Run process: C:\Users\andrew\AppData\Local\Temp\stack7216\time-1.5.0.1\.stack-work\dist\2672c1f3\setup\setup --builddir=.stack-work\dist\2672c1f3 configure --with-ghc=C:\Users\andrew\AppData\Local\Programs\stack\x86_64-windows\ghc-7.10.3\bin\ghc.exe --with-ghc-pkg=C:\Users\andrew\AppData\Local\Programs\stack\x86_64-windows\ghc-7.10.3\bin\ghc-pkg.exe --user --package-db=clear --package-db=global --package-db=C:\stack_root\snapshots\5fb55b82\pkgdb --libdir=C:\stack_root\snapshots\5fb55b82\lib --bindir=C:\stack_root\snapshots\5fb55b82\bin --datadir=C:\stack_root\snapshots\5fb55b82\share --libexecdir=C:\stack_root\snapshots\5fb55b82\libexec --sysconfdir=C:\stack_root\snapshots\5fb55b82\etc --docdir=C:\stack_root\snapshots\5fb55b82\doc\time-1.5.0.1 --htmldir=C:\stack_root\snapshots\5fb55b82\doc\time-1.5.0.1 --haddockdir=C:\stack_root\snapshots\5fb55b82\doc\time-1.5.0.1 --dependency=Win32=Win32-2.3.1.1-39aa18a188563287440e1fb568cb2ff0 --dependency=base=base-4.8.2.0-14035a44a8b95c6832da6dae1420f59e --dependency=deepseq=deepseq-1.4.1.1-2c33acf73357f514df72284dd4549b44 @(stack_6z1PPTeQ1JiHDL7m2t2akP:System.Process.Read src/System\Process\Read.hs:301:3)
Progress: 1/3
--  While building package time-1.5.0.1 using:
      C:\Users\andrew\AppData\Local\Temp\stack7216\time-1.5.0.1\.stack-work\dist\2672c1f3\setup\setup --builddir=.stack-work\dist\2672c1f3 configure --with-ghc=C:\Users\andrew\AppData\Local\Programs\stack\x86_64-windows\ghc-7.10.3\bin\ghc.exe --with-ghc-pkg=C:\Users\andrew\AppData\Local\Programs\stack\x86_64-windows\ghc-7.10.3\bin\ghc-pkg.exe --user --package-db=clear --package-db=global --package-db=C:\stack_root\snapshots\5fb55b82\pkgdb --libdir=C:\stack_root\snapshots\5fb55b82\lib --bindir=C:\stack_root\snapshots\5fb55b82\bin --datadir=C:\stack_root\snapshots\5fb55b82\share --libexecdir=C:\stack_root\snapshots\5fb55b82\libexec --sysconfdir=C:\stack_root\snapshots\5fb55b82\etc --docdir=C:\stack_root\snapshots\5fb55b82\doc\time-1.5.0.1 --htmldir=C:\stack_root\snapshots\5fb55b82\doc\time-1.5.0.1 --haddockdir=C:\stack_root\snapshots\5fb55b82\doc\time-1.5.0.1 --dependency=Win32=Win32-2.3.1.1-39aa18a188563287440e1fb568cb2ff0 --dependency=base=base-4.8.2.0-14035a44a8b95c6832da6dae1420f59e --dependency=deepseq=deepseq-1.4.1.1-2c33acf73357f514df72284dd4549b44
    Process exited with code: ExitFailure 1
    Logs have been written to: C:\Users\andrew\Dropbox\Haskell\timedebug\.stack-work\logs\time-1.5.0.1.log

    [1 of 1] Compiling Main             ( C:\Users\andrew\AppData\Local\Temp\stack7216\time-1.5.0.1\Setup.hs, C:\Users\andrew\AppData\Local\Temp\stack7216\time-1.5.0.1\.stack-work\dist\2672c1f3\setup\Main.o )
    Linking C:\Users\andrew\AppData\Local\Temp\stack7216\time-1.5.0.1\.stack-work\dist\2672c1f3\setup\setup.exe ...
    Configuring time-1.5.0.1...
    setup.exe: The package has a './configure' script. This requires a Unix
    compatibility toolchain such as MinGW+MSYS or Cygwin.

Running in ghci

1. Change directory into getFiles directory made above.
2. Run stack ghci
3. Load directory functions with System.Directory.
4. Run function files <- getDirectoryContents '.'
5. Print the files using print files

The results is the output of the files and folders in the getFiles folder. As expected.

[mgsloan]

stack setup installs this toolchain. Did you install ghc via stack setup, or some other way? You can either uninstall your system ghc or put system-ghc: false in your $STACK_ROOT/config.yaml and run stack setup.

[ahgibbons]

Before I first installed stack I uninstalled my previous ghc and then used stack setup, so I assume I don't have any other versions of ghc except those that came with stack.
I will try what you suggest and report back soon.

[ahgibbons]

Wow, this worked! Thanks, it is installing correctly now.

[mgsloan]

Cool, glad it's working!

[ahgibbons]

Is there a disadvantage to having the system-ghc: false setting in the $STACK_ROOT/config.yaml files?

[mgsloan]

@ahgibbons Not really, infact, I think it is worthwile revisiting that default - #1901

It makes it a little bit harder to use custom ghc installs, and could potentially use up more diskspace if you already have a ghc install. That's the only downside AFAICT. It would certainly save me the effort of asking about ghc installation method :)