Build fails in nixpkgs

[Mic92]

The nixpkgs now fails to build:

Building library for niv-0.2.19..
[ 1 of 19] Compiling Data.Aeson.Extended ( src/Data/Aeson/Extended.hs, dist/build/Data/Aeson/Extended.o, dist/build/Data/Aeson/Extended.dyn_o )
[ 2 of 19] Compiling Data.HashMap.Strict.Extended ( src/Data/HashMap/Strict/Extended.hs, dist/build/Data/HashMap/Strict/Extended.o, dist/build/Data/HashMap/Strict/Extended.dyn_o )
[ 3 of 19] Compiling Niv.Logger       ( src/Niv/Logger.hs, dist/build/Niv/Logger.o, dist/build/Niv/Logger.dyn_o )
[ 4 of 19] Compiling Data.Text.Extended ( src/Data/Text/Extended.hs, dist/build/Data/Text/Extended.o, dist/build/Data/Text/Extended.dyn_o )
[ 5 of 19] Compiling Niv.GitHub.API   ( src/Niv/GitHub/API.hs, dist/build/Niv/GitHub/API.o, dist/build/Niv/GitHub/API.dyn_o )
[ 6 of 19] Compiling Niv.Update       ( src/Niv/Update.hs, dist/build/Niv/Update.o, dist/build/Niv/Update.dyn_o )
[ 7 of 19] Compiling Niv.Sources      ( src/Niv/Sources.hs, dist/build/Niv/Sources.o, dist/build/Niv/Sources.dyn_o )
[ 8 of 19] Compiling Niv.Sources.Test ( src/Niv/Sources/Test.hs, dist/build/Niv/Sources/Test.o, dist/build/Niv/Sources/Test.dyn_o )
[ 9 of 19] Compiling Niv.GitHub       ( src/Niv/GitHub.hs, dist/build/Niv/GitHub.o, dist/build/Niv/GitHub.dyn_o )
[10 of 19] Compiling Niv.GitHub.Test  ( src/Niv/GitHub/Test.hs, dist/build/Niv/GitHub/Test.o, dist/build/Niv/GitHub/Test.dyn_o )
[11 of 19] Compiling Niv.Cmd          ( src/Niv/Cmd.hs, dist/build/Niv/Cmd.o, dist/build/Niv/Cmd.dyn_o )
[12 of 19] Compiling Niv.Local.Cmd    ( src/Niv/Local/Cmd.hs, dist/build/Niv/Local/Cmd.o, dist/build/Niv/Local/Cmd.dyn_o )
[13 of 19] Compiling Niv.GitHub.Cmd   ( src/Niv/GitHub/Cmd.hs, dist/build/Niv/GitHub/Cmd.o, dist/build/Niv/GitHub/Cmd.dyn_o )
[14 of 19] Compiling Niv.Git.Cmd      ( src/Niv/Git/Cmd.hs, dist/build/Niv/Git/Cmd.o, dist/build/Niv/Git/Cmd.dyn_o )
[15 of 19] Compiling Niv.Git.Test     ( src/Niv/Git/Test.hs, dist/build/Niv/Git/Test.o, dist/build/Niv/Git/Test.dyn_o )
[16 of 19] Compiling Niv.Update.Test  ( src/Niv/Update/Test.hs, dist/build/Niv/Update/Test.o, dist/build/Niv/Update/Test.dyn_o )
[17 of 19] Compiling Niv.Test         ( src/Niv/Test.hs, dist/build/Niv/Test.o, dist/build/Niv/Test.dyn_o )
[18 of 19] Compiling Paths_niv        ( dist/build/autogen/Paths_niv.hs, dist/build/Paths_niv.o, dist/build/Paths_niv.dyn_o )
[19 of 19] Compiling Niv.Cli          ( src/Niv/Cli.hs, dist/build/Niv/Cli.o, dist/build/Niv/Cli.dyn_o )

src/Niv/Cli.hs:63:41: error:
    • Couldn't match expected type ‘Opts.ParseError’
                  with actual type ‘Maybe String -> Opts.ParseError’
    • Probable cause: ‘Opts.ShowHelpText’ is applied to too few arguments
      In the third argument of ‘Opts.parserFailure’, namely
        ‘Opts.ShowHelpText’
      In the second argument of ‘($)’, namely
        ‘Opts.parserFailure pprefs pinfo Opts.ShowHelpText mempty’
      In the expression:
        Opts.Failure
          $ Opts.parserFailure pprefs pinfo Opts.ShowHelpText mempty
   |
63 |         Opts.parserFailure pprefs pinfo Opts.ShowHelpText mempty
   |                                         ^^^^^^^^^^^^^^^^^

[sternenseemann]

Should be fixed in NixOS/nixpkgs#117023: We override niv to use an older version of optparse-applicative: NixOS/nixpkgs@b37db39

Fixing #312 would be nice, so we can remove that again.

[Mic92]

Ok. closing this because of the other issue.