[Haskell-cafe] stack install ghcide fails

[Dušan Kolář]

Hello Café,

	Using stack, I've tried stack install ghcide, it reported to put the following 
into my global extra-deps:
- haskell-
lsp-0.17.0.0 at sha256:ddfcc2798f04bcb1ec20fafc02c03faa197322192578e879cef5852
aba43ebcb,5264
- haskell-lsp-
types-0.17.0.0 at sha256:9078237412d0596a7d09d432389c8fa21d6f3e21ed2ed761b3
093a21607d6c28,2941
- hie-
bios-0.2.1 at sha256:5f98a3516ce65e0a3ffd88bf6fb416b04cc084371d0fbf0e1762780d
e1d652ce,3219
- rope-utf16-
splay-0.3.1.0 at sha256:15a53c57f8413d193054bb5f045929edae3b2669def4c6af6319
7b30dc1d5003,2029

Nevertheless, the build failed anyway:

stack install ghcide
ghcide> configure
ghcide> Configuring ghcide-0.0.4...
ghcide> build
ghcide> Preprocessing library for ghcide-0.0.4..
ghcide> Building library for ghcide-0.0.4..
ghcide> [ 1 of 33] Compiling Development.IDE.Core.Debouncer
ghcide> [ 2 of 33] Compiling Development.IDE.Core.PositionMapping
ghcide> [ 3 of 33] Compiling Development.IDE.GHC.Compat
ghcide> [ 4 of 33] Compiling Development.IDE.GHC.CPP
ghcide> [ 5 of 33] Compiling Development.IDE.Spans.Type
ghcide> [ 6 of 33] Compiling Development.IDE.Types.Location
ghcide> [ 7 of 33] Compiling Development.IDE.Types.Diagnostics
ghcide> [ 8 of 33] Compiling Development.IDE.LSP.Protocol
ghcide> [ 9 of 33] Compiling Development.IDE.GHC.Util
ghcide> [10 of 33] Compiling Development.IDE.GHC.Orphans
ghcide> [11 of 33] Compiling Development.IDE.Import.DependencyInformation
ghcide> [12 of 33] Compiling Development.IDE.GHC.Error
ghcide> [13 of 33] Compiling Development.IDE.Import.FindImports
ghcide> [14 of 33] Compiling Development.IDE.GHC.Warnings
ghcide> [15 of 33] Compiling Development.IDE.Core.Preprocessor
ghcide> [16 of 33] Compiling Development.IDE.Core.RuleTypes
ghcide> [17 of 33] Compiling Development.IDE.Types.Logger
ghcide> [18 of 33] Compiling Development.IDE.Types.Options
ghcide> [19 of 33] Compiling Development.IDE.Core.Shake
ghcide> 
ghcide> /tmp/stack204611/ghcide-0.0.4/src/Development/IDE/Core/Shake.hs:106:5: 
error:
ghcide>     • No instance for (Control.Monad.Fail.MonadFail Rules)
ghcide>         arising from a do statement
ghcide>         with the failable pattern ‘Just x’
ghcide>     • In a stmt of a 'do' block:
ghcide>         Just x <- getShakeExtraRules @ShakeExtras
ghcide>       In the expression:
ghcide>         do Just x <- getShakeExtraRules @ShakeExtras
ghcide>            return x
ghcide>       In an equation for ‘getShakeExtrasRules’:
ghcide>           getShakeExtrasRules
ghcide>             = do Just x <- getShakeExtraRules @ShakeExtras
ghcide>                  return x
ghcide>     |
ghcide> 106 |     Just x <- getShakeExtraRules @ShakeExtras
ghcide>     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ghcide> 

--  While building package ghcide-0.0.4 using:
      /home/kolar/.stack/setup-exe-cache/x86_64-linux-tinfo6/Cabal-
simple_mPHDZzAJ_2.4.0.1_ghc-8.6.3 --builddir=.stack-work/dist/x86_64-linux-tinfo6/
Cabal-2.4.0.1 build --ghc-options " -fdiagnostics-color=always"
    Process exited with code: ExitFailure 1


Does that mean the ghcide is broken? Or am I doing something wrong?

Best regards,

Dusan

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