Resolving dependencies...
Configuring bytestring-0.9.1.10...
Building bytestring-0.9.1.10...
Preprocessing library bytestring-0.9.1.10...
ghc: unrecognised flags: -fno-method-sharing
Usage: For basic information, try the `--help' option.
Failed to install bytestring-0.9.1.10
cabal: Error: some packages failed to install:
bytestring-0.9.1.10 failed during the building phase. The exception was:
ExitFailure 1
digest-0.0.0.9 depends on bytestring-0.9.1.10 which failed to install.
ecu-0.0.0 depends on bytestring-0.9.1.10 which failed to install.
polyparse-1.9 depends on bytestring-0.9.1.10 which failed to install.
text-0.11.3.1 depends on bytestring-0.9.1.10 which failed to install.
vcd-0.2.2 depends on bytestring-0.9.1.10 which failed to install.