Warning: The install command is a part of the legacy v1 style of cabal usage.

Please switch to using either the new project style and the new-install
command or the legacy v1-install alias as new-style projects will become the
default in the next version of cabal-install. Please file a bug if you cannot
replicate a working v1- use case with the new-style commands.

For more information, see: https://wiki.haskell.org/Cabal/NewBuild

Resolving dependencies...
Starting     mmsyn3-0.1.4.0
Starting     mmsyn5-0.4.2.2
Starting     primitive-0.7.0.0
Building     mmsyn5-0.4.2.2
Building     mmsyn3-0.1.4.0
Building     primitive-0.7.0.0
Completed    mmsyn5-0.4.2.2
Completed    mmsyn3-0.1.4.0
Completed    primitive-0.7.0.0
Starting     vector-0.12.0.3
Building     vector-0.12.0.3
Completed    vector-0.12.0.3
Starting     mmsyn2-0.1.7.0
Building     mmsyn2-0.1.7.0
Completed    mmsyn2-0.1.7.0
Starting     mmsyn6ukr-0.6.2.0
Building     mmsyn6ukr-0.6.2.0
Completed    mmsyn6ukr-0.6.2.0
Starting     mmsyn7ukr-0.5.0.1
Building     mmsyn7ukr-0.5.0.1
Completed    mmsyn7ukr-0.5.0.1
Starting     mmsyn7l-0.1.1.0
Building     mmsyn7l-0.1.1.0
Failed to install mmsyn7l-0.1.1.0
Build log ( /home/builder/.cabal/logs/ghc-8.6.3/mmsyn7l-0.1.1.0-5ECmM7ijJDG7NvqnAmUqm.log ):
cabal: Entering directory '/tmp/cabal-tmp-10498/mmsyn7l-0.1.1.0'
Configuring mmsyn7l-0.1.1.0...
Preprocessing executable 'mmsyn7l' for mmsyn7l-0.1.1.0..
Building executable 'mmsyn7l' for mmsyn7l-0.1.1.0..

<no location info>: warning: [-Wmissing-home-modules]
    These modules are needed for compilation but not listed in your .cabal file's other-modules: 
        MMSyn7l
[1 of 2] Compiling MMSyn7l          ( MMSyn7l.hs, dist/build/mmsyn7l/mmsyn7l-tmp/MMSyn7l.o )

MMSyn7l.hs:147:14: error:
    • Couldn't match expected type ‘IO ()’
                  with actual type ‘Double -> IO ()’
    • Probable cause: ‘changeVol2’ is applied to too few arguments
      In the expression: changeVol2 file xs
      In a stmt of a 'do' block:
        if take 1 xs == "-" then
            changeVol2 file xs
        else
            do let ys = ...
                   ....
               volS file (ratio * ampl)
               removeFile file
               ....
      In the expression:
        do let delta = (- 1.0) - ampl
               xs = filter (\ x -> ...) change0
           if take 1 xs == "-" then
               changeVol2 file xs
           else
               do let ...
                  ....
    |
147 |         then changeVol2 file xs
    |              ^^^^^^^^^^^^^^^^^^
cabal: Leaving directory '/tmp/cabal-tmp-10498/mmsyn7l-0.1.1.0'
cabal: Error: some packages failed to install:
mmsyn7l-0.1.1.0-5ECmM7ijJDG7NvqnAmUqm failed during the building phase. The
exception was:
ExitFailure 1