Resolving dependencies... Configuring half-0.2.2.1... Building half-0.2.2.1... Preprocessing library half-0.2.2.1... [1 of 1] Compiling Numeric.Half ( src/Numeric/Half.hs, dist/build/Numeric/Half.o ) In-place registering half-0.2.2.1... Running Haddock for half-0.2.2.1... Running hscolour for half-0.2.2.1... Preprocessing library half-0.2.2.1... Preprocessing library half-0.2.2.1... Preprocessing library OpenGLRaw-2.6.1.0... Warning: The documentation for the following packages are not installed. No links will be generated to these packages: half-0.2.2.1, text-1.2.1.3 : cannot satisfy -package-id half-0.2.2.1-82d070cfe4bd28cf2066cb6c454339e0 (use -v for more information) cabal: '/opt/ghc/7.10.2/bin/ghc' exited with an error: : cannot satisfy -package-id half-0.2.2.1-82d070cfe4bd28cf2066cb6c454339e0 (use -v for more information) Failed to install OpenGLRaw-2.6.1.0 cabal: Error: some packages failed to install: OpenGLRaw-2.6.1.0 failed during the final install step. The exception was: ExitFailure 1