1.7.1 drops a "I don't know how to install GHC on your system configuration..." on me

[Thomas Løcke]

Hi all

Since upgrading from 1.6.5 to 1.7.1 stack no longer works. When I try to build my projects, all I get is a "I don't know how to install GHC on your system configuration, please install manually" message.

I've been using stack for a little over a year, and this is a first for me. I've no idea how to fix it.

I use Slackware 14.2 on all my systems. The problem persists on all systems.

Any and all advice is more than welcome.  :o)

[IC Rainbow]

Did a quick code search and traced the culprit to https://github.com/commercialhaskell/stack/blob/28cb09e756ec19dd4acae4f1069db61784bc8aae/src/Stack/Setup.hs#L444

Try running `stack setup --verbose`, maybe it'll give you (and us) a hint about what exactly it tries to find or how it detects your system now and at 1.6.

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[Thomas Løcke]

This is the output I get with 1.6.5:

thomas@ultra27:~/vcs/my-project$ stack setup --verbose

Version 1.6.5, Git revision 24ab0d6ff07f28276e082c3ce74dfdeb1a2ca9e9 (5514 commits) x86_64 hpack-0.20.0

2018-05-24 15:41:23.618219: [debug] Checking for project config at: /home/thomas/vcs/my-project/stack.yaml

@(Stack/Config.hs:842:9)

2018-05-24 15:41:23.618430: [debug] Loading project config file stack.yaml

@(Stack/Config.hs:868:13)

2018-05-24 15:41:23.619983: [debug] Decoding build plan from: /home/thomas/.stack/build-plan/lts-11.10.yaml

@(Stack/Snapshot.hs:150:5)

2018-05-24 15:41:23.620056: [debug] Trying to decode /home/thomas/.stack/build-plan-cache/lts-11.10.cache

@(Data/Store/VersionTagged.hs:66:5)

2018-05-24 15:41:23.626258: [debug] Success decoding /home/thomas/.stack/build-plan-cache/lts-11.10.cache

@(Data/Store/VersionTagged.hs:70:13)

2018-05-24 15:41:23.626698: [debug] Run process: /sbin/ldconfig -p

@(System/Process/Log.hs:37:3)

2018-05-24 15:41:23.630167: [debug] Process finished in 3ms: /sbin/ldconfig -p

@(System/Process/Log.hs:44:3)

2018-05-24 15:41:23.630393: [debug] Run process: /usr/bin/gcc -v

@(System/Process/Log.hs:37:3)

2018-05-24 15:41:23.636082: [debug] Process finished in 5ms: /usr/bin/gcc -v

@(System/Process/Log.hs:44:3)

2018-05-24 15:41:23.636184: [debug] PIE enabled

@(Stack/Setup.hs:589:17)

2018-05-24 15:41:23.637257: [debug] Did not find shared library libtinfo.so.5

@(Stack/Setup.hs:579:38)

2018-05-24 15:41:23.637379: [debug] Did not find shared library libtinfo.so.6

@(Stack/Setup.hs:579:38)

2018-05-24 15:41:23.637637: [debug] Did not find shared library libncursesw.so.6

@(Stack/Setup.hs:579:38)

2018-05-24 15:41:23.637728: [debug] Found shared library libgmp.so.10 in 'ldconfig -p' output

@(Stack/Setup.hs:565:29)

2018-05-24 15:41:23.637858: [debug] Did not find shared library libgmp.so.3

@(Stack/Setup.hs:579:38)

2018-05-24 15:41:23.637922: [debug] Using standard GHC build

@(Stack/Setup.hs:617:9)

2018-05-24 15:41:23.638499: [debug] Performing a sanity check on: /home/thomas/.stack/programs/x86_64-linux/ghc-8.2.2/bin/ghc

@(Stack/Setup.hs:1587:5)

2018-05-24 15:41:23.638648: [debug] Run process: /home/thomas/.stack/programs/x86_64-linux/ghc-8.2.2/bin/ghc /tmp/stack-sanity-check23909/Main.hs -no-user-package-db

@(System/Process/Log.hs:37:3)

2018-05-24 15:41:24.270434: [debug] Process finished in 631ms: /home/thomas/.stack/programs/x86_64-linux/ghc-8.2.2/bin/ghc /tmp/stack-sanity-check23909/Main.hs -no-user-package-db

@(System/Process/Log.hs:44:3)

2018-05-24 15:41:24.271186: [info] stack will use a sandboxed GHC it installed

@(Stack/SetupCmd.hs:131:14)

2018-05-24 15:41:24.271261: [info] For more information on paths, see 'stack path' and 'stack exec env'

@(Stack/SetupCmd.hs:133:5)

2018-05-24 15:41:24.271347: [info] To use this GHC and packages outside of a project, consider using:

@(Stack/SetupCmd.hs:134:5)

2018-05-24 15:41:24.271424: [info] stack ghc, stack ghci, stack runghc, or stack exec

@(Stack/SetupCmd.hs:135:5)

and this is what I get on the same project with 1.7.1:

thomas@ultra27:~/vcs/my-project$ stack setup --verbose

Version 1.7.1, Git revision 681c800873816c022739ca7ed14755e85a579565 (5807 commits) x86_64 hpack-0.28.2

2018-05-24 15:40:39.662808: [debug] Checking for project config at: /home/thomas/vcs/my-project/stack.yaml

@(src/Stack/Config.hs:850:9)

2018-05-24 15:40:39.663624: [debug] Loading project config file stack.yaml

@(src/Stack/Config.hs:876:13)

2018-05-24 15:40:39.666966: [debug] Decoding build plan from: /home/thomas/.stack/build-plan/lts-11.10.yaml

@(src/Stack/Snapshot.hs:164:5)

2018-05-24 15:40:39.667073: [debug] Trying to decode /home/thomas/.stack/build-plan-cache/lts-11.10.cache

@(src/Stack/Snapshot.hs:156:32)

2018-05-24 15:40:39.674519: [debug] Success decoding /home/thomas/.stack/build-plan-cache/lts-11.10.cache

@(src/Stack/Snapshot.hs:156:32)

2018-05-24 15:40:39.675266: [debug] Run process: /sbin/ldconfig -p

@(src/Stack/Setup.hs:580:22)

2018-05-24 15:40:39.683033: [debug] Process finished in 8ms: /sbin/ldconfig -p

@(src/Stack/Setup.hs:580:22)

2018-05-24 15:40:39.684646: [debug] Did not find shared library libtinfo.so.5

@(src/Stack/Setup.hs:603:38)

2018-05-24 15:40:39.684855: [debug] Did not find shared library libtinfo.so.6

@(src/Stack/Setup.hs:603:38)

2018-05-24 15:40:39.684992: [debug] Did not find shared library libncursesw.so.6

@(src/Stack/Setup.hs:603:38)

2018-05-24 15:40:39.685106: [debug] Found shared library libgmp.so.10 in 'ldconfig -p' output

@(src/Stack/Setup.hs:589:29)

2018-05-24 15:40:39.685252: [debug] Did not find shared library libgmp.so.3

@(src/Stack/Setup.hs:603:38)

2018-05-24 15:40:39.685324: [debug] Potential GHC builds: 

@(src/Stack/Setup.hs:632:9)

2018-05-24 15:40:39.685393: [debug] Found already installed GHC builds: 

@(src/Stack/Setup.hs:458:13)

I don't know how to install GHC on your system configuration, please install manually

:o)

[Simon Jakobi]

Hi Thomas,

in case you can install ghc via your package manager or other means, you can use the system-ghc option to make stack use that one:

https://docs.haskellstack.org/en/latest/yaml_configuration/#system-ghc

Hope that helps,

Simon

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[Thomas Løcke]

Hi Simon

The newest GHC I can get with my system package manager is 7.10.3, so sadly not a solution.

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[Dan Burton]

I don't think this commit explains the issue you're experiencing, but it highlights the logic that results in what you're seeing:

https://github.com/commercialhaskell/stack/commit/be415545029d1bcafddb9fc13b8283e3d1b1abb1#diff-4968f87e674615592e572f2ec593e5b0

cc Manny, any comment on this issue?

-- Dan Burton

On Thu, May 24, 2018 at 7:34 AM, Thomas Løcke <thomas....@gmail.com> wrote:

Hi Simon

The newest GHC I can get with my system package manager is 7.10.3, so sadly not a solution.

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[IC Rainbow]

Would it help if you install ncursesw library it seeks?

[Thomas Løcke]

I don't think so, as that library is also missing from 1.6.5, which works just fine. Unless 1.7.1 is using ncursesw in some new and "weird" way?

[IC Rainbow]

My guess is that something trips up the detection. Maybe adding one the libraries it seeks would help it to decide.

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[Thomas Løcke]

I can't make this work, and now that HIE requires stack >= 1.7.1 this is becoming untenable.

As far as I can see 1.6.5 was statically linked, whereas 1.7.1 is dynamically linked. Would it be possible to add a statically linked stack executable to https://docs.haskellstack.org/en/stable/README/#how-to-install, so it'll work for those of us who are not using the same distro as the stack developers?

:o)

[David Baynard]

This is being tracked in the following issues:

https://github.com/commercialhaskell/stack/issues/4088

https://github.com/commercialhaskell/stack/issues/2387

Upstream ghc did not support the distro on which static builds were produced. This should be fixed soon.