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Please switch to using either the new project style and the new-install
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Resolving dependencies...
Starting     maquinitas-tidal-0.2.0
Building     maquinitas-tidal-0.2.0
Failed to install maquinitas-tidal-0.2.0
Build log ( /home/builder/.cabal/logs/ghc-8.6.3/maquinitas-tidal-0.2.0-8hXzwPhr6934XxUCcnYo75.log ):
cabal: Entering directory '/tmp/cabal-tmp-28761/maquinitas-tidal-0.2.0'
Configuring maquinitas-tidal-0.2.0...
Preprocessing library for maquinitas-tidal-0.2.0..
Building library for maquinitas-tidal-0.2.0..
[1 of 5] Compiling KORGMR16         ( src/KORGMR16.hs, dist/build/KORGMR16.o )
[2 of 5] Compiling MFBTanzbar       ( src/MFBTanzbar.hs, dist/build/MFBTanzbar.o )
[3 of 5] Compiling OtoBam           ( src/OtoBam.hs, dist/build/OtoBam.o )

src/OtoBam.hs:12:8: error:
    parse error on input ‘=’
    Perhaps you need a 'let' in a 'do' block?
    e.g. 'let x = 5' instead of 'x = 5'
   |
12 |   type = 18
   |        ^
cabal: Leaving directory '/tmp/cabal-tmp-28761/maquinitas-tidal-0.2.0'
cabal: Error: some packages failed to install:
maquinitas-tidal-0.2.0-8hXzwPhr6934XxUCcnYo75 failed during the building
phase. The exception was:
ExitFailure 1