Resolving dependencies...
Configuring integer-pure-1.0...
Building integer-pure-1.0...
Failed to install integer-pure-1.0
Build log ( /home/builder/.cabal/logs/integer-pure-1.0.log ):
cabal: Entering directory '/tmp/cabal-tmp-3457/integer-pure-1.0'
Configuring integer-pure-1.0...
Building integer-pure-1.0...
Preprocessing library integer-pure-1.0...
[1 of 1] Compiling Data.Integer     ( Data/Integer.hs, dist/build/Data/Integer.o )

Data/Integer.hs:18:1: error:
    Failed to load interface for ‘Prelude’
    It is a member of the hidden package ‘base-4.9.0.0’.
    Perhaps you need to add ‘base’ to the build-depends in your .cabal file.
    Use -v to see a list of the files searched for.

Data/Integer.hs:19:1: error:
    Failed to load interface for ‘Data.Char’
    It is a member of the hidden package ‘base-4.9.0.0’.
    Perhaps you need to add ‘base’ to the build-depends in your .cabal file.
    Use -v to see a list of the files searched for.

Data/Integer.hs:21:1: error:
    Failed to load interface for ‘Data.Maybe’
    It is a member of the hidden package ‘base-4.9.0.0’.
    Perhaps you need to add ‘base’ to the build-depends in your .cabal file.
    Use -v to see a list of the files searched for.

Data/Integer.hs:22:1: error:
    Failed to load interface for ‘Data.Ratio’
    It is a member of the hidden package ‘base-4.9.0.0’.
    Perhaps you need to add ‘base’ to the build-depends in your .cabal file.
    Use -v to see a list of the files searched for.
cabal: Leaving directory '/tmp/cabal-tmp-3457/integer-pure-1.0'
cabal: Error: some packages failed to install:
integer-pure-1.0 failed during the building phase. The exception was:
ExitFailure 1