wtf.bash

[nix-shell:~/development/nixpkgs]$ nix repl default.nix 
Welcome to Nix version 2.0.4. Type :? for help.

Loading 'default.nix'...
Added 9659 variables.

nix-repl> :b haskell.compiler.ghcLinear
these derivations will be built:
  /nix/store/pifcl83nn43wkvsdwg1k4m089g44jqvl-hscolour-1.24.4.drv
  /nix/store/77psczhb9v2j3k2av0pj52vc886v86xm-hscolour-1.24.4.drv
  /nix/store/4hkir8s70g0r1686kxbba8w4lw4p9jk3-ghc-8.7.20181102.drv
building '/nix/store/pifcl83nn43wkvsdwg1k4m089g44jqvl-hscolour-1.24.4.drv'...
setupCompilerEnvironmentPhase
Build with /nix/store/2zy6wii50hsa6bpw7kcbsrpphwxdnnzx-ghc-8.4.3-binary.
unpacking sources
unpacking source archive /nix/store/vbcisx90wrx657pa1iapmk38wvrv9p6p-hscolour-1.24.4.tar.gz
source root is hscolour-1.24.4
setting SOURCE_DATE_EPOCH to timestamp 1512069381 of file hscolour-1.24.4/Setup.hs
patching sources
compileBuildDriverPhase
setupCompileFlags: -package-db=/run/user/1000/nix-build-hscolour-1.24.4.drv-0/setup-package.conf.d -j8 -threaded
[1 of 1] Compiling Main             ( Setup.hs, /run/user/1000/nix-build-hscolour-1.24.4.drv-0/Main.o )
Linking Setup ...
configuring
configureFlags: --verbose --prefix=/nix/store/dmx67cnp094r4dwi7221xarczbcczj27-hscolour-1.24.4 --libdir=$prefix/lib/$compiler --libsubdir=$abi/$libname --datadir=/nix/store/s8wiyx4q7x0fivxnhgk69n6mg9ksmyk0-hscolour-1.24.4-data/share/ghc-8.4.3-binary --with-gcc=gcc --package-db=/run/user/1000/nix-build-hscolour-1.24.4.drv-0/package.conf.d --ghc-option=-j8 --disable-split-objs --disable-library-profiling --disable-profiling --disable-shared --disable-coverage --enable-static --disable-executable-dynamic --disable-tests --disable-benchmarks --enable-library-vanilla --enable-library-for-ghci --ghc-option=-split-sections
Using Parsec parser
Configuring hscolour-1.24.4...
Dependency base <10: using base-4.11.1.0
Dependency containers -any: using containers-0.5.11.0
Source component graph:
    component exe:HsColour
    component lib
Configured component graph:
    component hscolour-1.24.4-502KyfwmJ5xACzHLUteLg-HsColour
        include base-4.11.1.0
        include containers-0.5.11.0
    component hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov
        include base-4.11.1.0
        include containers-0.5.11.0
Linked component graph:
    unit hscolour-1.24.4-502KyfwmJ5xACzHLUteLg-HsColour
        include base-4.11.1.0
        include containers-0.5.11.0
    unit hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov
        include base-4.11.1.0
        include containers-0.5.11.0
        Language.Haskell.HsColour=hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov:Language.Haskell.HsColour,Language.Haskell.HsColour.ACSS=hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov:Language.Haskell.HsColour.ACSS,Language.Haskell.HsColour.ANSI=hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov:Language.Haskell.HsColour.ANSI,Language.Haskell.HsColour.Anchors=hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov:Language.Haskell.HsColour.Anchors,Language.Haskell.HsColour.CSS=hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov:Language.Haskell.HsColour.CSS,Language.Haskell.HsColour.Classify=hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov:Language.Haskell.HsColour.Classify,Language.Haskell.HsColour.ColourHighlight=hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov:Language.Haskell.HsColour.ColourHighlight,Language.Haskell.HsColour.Colourise=hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov:Language.Haskell.HsColour.Colourise,Language.Haskell.HsColour.General=hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov:Language.Haskell.HsColour.General,Language.Haskell.HsColour.HTML=hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov:Language.Haskell.HsColour.HTML,Language.Haskell.HsColour.InlineCSS=hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov:Language.Haskell.HsColour.InlineCSS,Language.Haskell.HsColour.LaTeX=hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov:Language.Haskell.HsColour.LaTeX,Language.Haskell.HsColour.MIRC=hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov:Language.Haskell.HsColour.MIRC,Language.Haskell.HsColour.Options=hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov:Language.Haskell.HsColour.Options,Language.Haskell.HsColour.Output=hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov:Language.Haskell.HsColour.Output,Language.Haskell.HsColour.TTY=hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov:Language.Haskell.HsColour.TTY
Ready component graph:
    definite hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov
        depends base-4.11.1.0
        depends containers-0.5.11.0
    definite hscolour-1.24.4-502KyfwmJ5xACzHLUteLg-HsColour
        depends base-4.11.1.0
        depends containers-0.5.11.0
Using Cabal-2.2.0.1 compiled by ghc-8.4
Using compiler: ghc-8.4.3
Using install prefix:
/nix/store/dmx67cnp094r4dwi7221xarczbcczj27-hscolour-1.24.4
Executables installed in:
/nix/store/dmx67cnp094r4dwi7221xarczbcczj27-hscolour-1.24.4/bin
Libraries installed in:
/nix/store/dmx67cnp094r4dwi7221xarczbcczj27-hscolour-1.24.4/lib/ghc-8.4.3/x86_64-linux-ghc-8.4.3/hscolour-1.24.4-94pJJEQPeRh4lzTDXHECov
Dynamic Libraries installed in:
/nix/store/dmx67cnp094r4dwi7221xarczbcczj27-hscolour-1.24.4/lib/ghc-8.4.3/x86_64-linux-ghc-8.4.3
Private executables installed in:
/nix/store/dmx67cnp094r4dwi7221xarczbcczj27-hscolour-1.24.4/libexec/x86_64-linux-ghc-8.4.3/hscolour-1.24.4
Data files installed in:
/nix/store/s8wiyx4q7x0fivxnhgk69n6mg9ksmyk0-hscolour-1.24.4-data/share/ghc-8.4.3-binary/x86_64-linux-ghc-8.4.3/hscolour-1.24.4
Documentation installed in:
/nix/store/s8wiyx4q7x0fivxnhgk69n6mg9ksmyk0-hscolour-1.24.4-data/share/ghc-8.4.3-binary/doc/x86_64-linux-ghc-8.4.3/hscolour-1.24.4
Configuration files installed in:
/nix/store/dmx67cnp094r4dwi7221xarczbcczj27-hscolour-1.24.4/etc
No alex found
Using ar found on system at:
/nix/store/vcc4svb8gy29g4pam2zja6llkbcwsyiq-binutils-2.30/bin/ar
No c2hs found
No cpphs found
No doctest found
Using gcc version 7.3.0 given by user at:
/nix/store/10yq7kwlvbc6h658izmrlsspry1g9f3c-gcc-wrapper-7.3.0/bin/gcc
Using ghc version 8.4.3 found on system at:
/nix/store/2zy6wii50hsa6bpw7kcbsrpphwxdnnzx-ghc-8.4.3-binary/bin/ghc
Using ghc-pkg version 8.4.3 found on system at:
/nix/store/2zy6wii50hsa6bpw7kcbsrpphwxdnnzx-ghc-8.4.3-binary/bin/ghc-pkg
No ghcjs found
No ghcjs-pkg found
No greencard found
Using haddock version 2.20.0 found on system at:
/nix/store/2zy6wii50hsa6bpw7kcbsrpphwxdnnzx-ghc-8.4.3-binary/bin/haddock
No happy found
Using haskell-suite found on system at: haskell-suite-dummy-location
Using haskell-suite-pkg found on system at: haskell-suite-pkg-dummy-location
No hmake found
Using hpc version 0.67 found on system at:
/nix/store/2zy6wii50hsa6bpw7kcbsrpphwxdnnzx-ghc-8.4.3-binary/bin/hpc
Using hsc2hs version 0.68.3 found on system at:
/nix/store/2zy6wii50hsa6bpw7kcbsrpphwxdnnzx-ghc-8.4.3-binary/bin/hsc2hs
No hscolour found
No jhc found
Using ld found on system at:
/nix/store/10yq7kwlvbc6h658izmrlsspry1g9f3c-gcc-wrapper-7.3.0/bin/ld
No lhc found
No lhc-pkg found
No pkg-config found
Using runghc version 8.4.3 found on system at:
/nix/store/2zy6wii50hsa6bpw7kcbsrpphwxdnnzx-ghc-8.4.3-binary/bin/runghc
Using strip version 2.30 found on system at:
/nix/store/vcc4svb8gy29g4pam2zja6llkbcwsyiq-binutils-2.30/bin/strip
Using tar found on system at:
/nix/store/y9nwn094yhwkg11pdl1w3427lyk9nvg3-gnutar-1.30/bin/tar
No uhc found
building
Preprocessing library for hscolour-1.24.4..
Building library for hscolour-1.24.4..
[ 1 of 16] Compiling Language.Haskell.HsColour.Classify ( Language/Haskell/HsColour/Classify.hs, dist/build/Language/Haskell/HsColour/Classify.o )

Language/Haskell/HsColour/Classify.hs:50:39: warning: [-Wtabs]
    Tab character found here, and in 7 further locations.
    Please use spaces instead.
   |
50 | glue (q:".":n:rest) | isUpper (head q)  -- qualified names
   |                                       ^^
[ 2 of 16] Compiling Language.Haskell.HsColour.ColourHighlight ( Language/Haskell/HsColour/ColourHighlight.hs, dist/build/Language/Haskell/HsColour/ColourHighlight.o )
[ 3 of 16] Compiling Language.Haskell.HsColour.Colourise ( Language/Haskell/HsColour/Colourise.hs, dist/build/Language/Haskell/HsColour/Colourise.o )
[ 4 of 16] Compiling Language.Haskell.HsColour.General ( Language/Haskell/HsColour/General.hs, dist/build/Language/Haskell/HsColour/General.o )
[ 5 of 16] Compiling Language.Haskell.HsColour.Anchors ( Language/Haskell/HsColour/Anchors.hs, dist/build/Language/Haskell/HsColour/Anchors.o )

Language/Haskell/HsColour/Anchors.hs:73:1: warning: [-Wtabs]
    Tab character found here, and in four further locations.
    Please use spaces instead.
   |
73 |                       | v `inST` st     -> Nothing
   | ^^^^^^^^
[ 6 of 16] Compiling Language.Haskell.HsColour.HTML ( Language/Haskell/HsColour/HTML.hs, dist/build/Language/Haskell/HsColour/HTML.o )
[ 7 of 16] Compiling Language.Haskell.HsColour.CSS ( Language/Haskell/HsColour/CSS.hs, dist/build/Language/Haskell/HsColour/CSS.o )
[ 8 of 16] Compiling Language.Haskell.HsColour.ACSS ( Language/Haskell/HsColour/ACSS.hs, dist/build/Language/Haskell/HsColour/ACSS.o )
[ 9 of 16] Compiling Language.Haskell.HsColour.InlineCSS ( Language/Haskell/HsColour/InlineCSS.hs, dist/build/Language/Haskell/HsColour/InlineCSS.o )

Language/Haskell/HsColour/InlineCSS.hs:12:24: warning: [-Wtabs]
    Tab character found here.
    Please use spaces instead.
   |
12 | hscolour :: ColourPrefs -- ^ Preferences for styling.
   |                        ^
[10 of 16] Compiling Language.Haskell.HsColour.LaTeX ( Language/Haskell/HsColour/LaTeX.hs, dist/build/Language/Haskell/HsColour/LaTeX.o )
[11 of 16] Compiling Language.Haskell.HsColour.MIRC ( Language/Haskell/HsColour/MIRC.hs, dist/build/Language/Haskell/HsColour/MIRC.o )
[12 of 16] Compiling Language.Haskell.HsColour.Output ( Language/Haskell/HsColour/Output.hs, dist/build/Language/Haskell/HsColour/Output.o )
[13 of 16] Compiling Language.Haskell.HsColour.Options ( Language/Haskell/HsColour/Options.hs, dist/build/Language/Haskell/HsColour/Options.o )

Language/Haskell/HsColour/Options.hs:11:9: warning: [-Wtabs]
    Tab character found here, and in 12 further locations.
    Please use spaces instead.
   |
11 |     Help                -- ^ print usage message
   |         ^^^^^^^^
[14 of 16] Compiling Language.Haskell.HsColour.ANSI ( Language/Haskell/HsColour/ANSI.hs, dist/build/Language/Haskell/HsColour/ANSI.o )

Language/Haskell/HsColour/ANSI.hs:62:10: warning: [-Wmissing-methods]
    • No explicit implementation for
        ‘toEnum’
    • In the instance declaration for ‘Enum Highlight’
   |
62 | instance Enum Highlight where
   |          ^^^^^^^^^^^^^^
[15 of 16] Compiling Language.Haskell.HsColour.TTY ( Language/Haskell/HsColour/TTY.hs, dist/build/Language/Haskell/HsColour/TTY.o )
[16 of 16] Compiling Language.Haskell.HsColour ( Language/Haskell/HsColour.hs, dist/build/Language/Haskell/HsColour.o )

Language/Haskell/HsColour.hs:37:19: warning: [-Wtabs]
    Tab character found here, and in two further locations.
    Please use spaces instead.
   |
37 |          -> String      -- ^ Title for output.
   |                   ^^^^^^
ghc: could not execute: 
builder for '/nix/store/pifcl83nn43wkvsdwg1k4m089g44jqvl-hscolour-1.24.4.drv' failed with exit code 1
cannot build derivation '/nix/store/77psczhb9v2j3k2av0pj52vc886v86xm-hscolour-1.24.4.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/4hkir8s70g0r1686kxbba8w4lw4p9jk3-ghc-8.7.20181102.drv': 1 dependencies couldn't be built
error: build of '/nix/store/4hkir8s70g0r1686kxbba8w4lw4p9jk3-ghc-8.7.20181102.drv' failed