Resolving dependencies...
Configuring mtl-2.2.1...
Configuring pcre-light-0.4.0.4...
Building pcre-light-0.4.0.4...
Building mtl-2.2.1...
Configuring old-locale-1.0.0.7...
Installed pcre-light-0.4.0.4
Building old-locale-1.0.0.7...
Configuring readline-1.0.3.0...
Installed mtl-2.2.1
Installed old-locale-1.0.0.7
Configuring old-time-1.1.0.3...
Building readline-1.0.3.0...
Building old-time-1.1.0.3...
Installed readline-1.0.3.0
Installed old-time-1.1.0.3
Configuring mkcabal-0.4...
Building mkcabal-0.4...
Failed to install mkcabal-0.4
Build log ( /home/builder/.cabal/logs/mkcabal-0.4.log ):
cabal: Entering directory '/tmp/cabal-tmp-14149/mkcabal-0.4'
[1 of 1] Compiling Main             ( /tmp/cabal-tmp-14149/mkcabal-0.4/dist/setup/setup.hs, /tmp/cabal-tmp-14149/mkcabal-0.4/dist/setup/Main.o )
Linking /tmp/cabal-tmp-14149/mkcabal-0.4/dist/setup/setup ...
Configuring mkcabal-0.4...
Warning: No 'build-type' specified. If you do not need a custom Setup.hs or
./configure script then use 'build-type: Simple'.
Building mkcabal-0.4...
Preprocessing executable 'mkcabal' for mkcabal-0.4...

mkcabal.hs:1:16: warning:
    -fglasgow-exts is deprecated: Use individual extensions instead
[1 of 2] Compiling Licenses         ( Licenses.hs, dist/build/mkcabal/mkcabal-tmp/Licenses.o )
[2 of 2] Compiling Main             ( mkcabal.hs, dist/build/mkcabal/mkcabal-tmp/Main.o )

mkcabal.hs:397:50: error:
    • Couldn't match expected type ‘Either [Char] Regex’
                  with actual type ‘Regex’
    • In the second argument of ‘($)’, namely
        ‘compile "(.*)[[:space:]]*<(.*)>" []’
      In the first argument of ‘match’, namely
        ‘(either error id $ compile "(.*)[[:space:]]*<(.*)>" [])’
      In the second argument of ‘($)’, namely
        ‘match
           (either error id $ compile "(.*)[[:space:]]*<(.*)>" []) s []’
cabal: Leaving directory '/tmp/cabal-tmp-14149/mkcabal-0.4'
cabal: Error: some packages failed to install:
mkcabal-0.4 failed during the building phase. The exception was:
ExitFailure 1