Resolving dependencies...
Configuring udcode-0.1.20080512...
Building udcode-0.1.20080512...
Failed to install udcode-0.1.20080512
Build log ( /home/builder/.cabal/logs/udcode-0.1.20080512.log ):
cabal: Entering directory '/tmp/cabal-tmp-16042/udcode-0.1.20080512'
Warning: udcode.cabal: Unknown fields: build-depends (line 3)
Fields allowed in this section:
name, version, cabal-version, build-type, license, license-file,
license-files, copyright, maintainer, stability, homepage,
package-url, bug-reports, synopsis, description, category, author,
tested-with, data-files, data-dir, extra-source-files,
extra-tmp-files, extra-doc-files
Configuring udcode-0.1.20080512...
Building udcode-0.1.20080512...
Preprocessing library udcode-0.1.20080512...
[1 of 2] Compiling Data.UDCode.Helper ( Data/UDCode/Helper.hs, dist/build/Data/UDCode/Helper.o )

Data/UDCode/Helper.hs:16:8: 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/UDCode/Helper.hs:20:1: error:
    Failed to load interface for ‘Control.Monad’
    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/UDCode/Helper.hs:21:1: error:
    Failed to load interface for ‘Data.List’
    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/UDCode/Helper.hs:23:1: error:
    Failed to load interface for ‘Data.Foldable’
    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/UDCode/Helper.hs:24:1: 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/UDCode/Helper.hs:25:1: error:
    Failed to load interface for ‘Data.Monoid’
    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/UDCode/Helper.hs:26:1: error:
    Failed to load interface for ‘Data.Ord’
    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/UDCode/Helper.hs:27:1: error:
    Failed to load interface for ‘Data.Sequence’
    It is a member of the hidden package ‘containers-0.5.7.1’.
    Perhaps you need to add ‘containers’ 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-16042/udcode-0.1.20080512'
cabal: Error: some packages failed to install:
udcode-0.1.20080512 failed during the building phase. The exception was:
ExitFailure 1