Resolving dependencies...
Configuring stream-fusion-0.1.2.1...
Building stream-fusion-0.1.2.1...
Failed to install stream-fusion-0.1.2.1
Build log ( /home/builder/.cabal/logs/stream-fusion-0.1.2.1.log ):
cabal: Entering directory '/tmp/cabal-tmp-15899/stream-fusion-0.1.2.1'
Configuring stream-fusion-0.1.2.1...
Building stream-fusion-0.1.2.1...
Preprocessing library stream-fusion-0.1.2.1...

on the commandline: warning:
    -fglasgow-exts is deprecated: Use individual extensions instead

on the commandline: warning:
    The -fvia-C flag does nothing; it will be removed in a future GHC release
ghc: unrecognised flag: -fno-method-sharing

Usage: For basic information, try the `--help' option.
cabal: Leaving directory '/tmp/cabal-tmp-15899/stream-fusion-0.1.2.1'
cabal: Error: some packages failed to install:
stream-fusion-0.1.2.1 failed during the building phase. The exception was:
ExitFailure 1