Resolving dependencies... Configuring mtl-2.2.1... Configuring stm-2.4.4.1... Building mtl-2.2.1... Building stm-2.4.4.1... Configuring transformers-compat-0.5.1.4... Installed stm-2.4.4.1 Building transformers-compat-0.5.1.4... Installed mtl-2.2.1 Installed transformers-compat-0.5.1.4 Configuring exceptions-0.8.3... Building exceptions-0.8.3... Installed exceptions-0.8.3 Configuring temporary-1.2.0.4... Building temporary-1.2.0.4... Installed temporary-1.2.0.4 Configuring shellmate-0.1.2... Building shellmate-0.1.2... Failed to install shellmate-0.1.2 Build log ( /home/builder/.cabal/logs/shellmate-0.1.2.log ): cabal: Entering directory '/tmp/cabal-tmp-14345/shellmate-0.1.2' Configuring shellmate-0.1.2... Building shellmate-0.1.2... Preprocessing library shellmate-0.1.2... [1 of 1] Compiling Control.Shell ( Control/Shell.hs, dist/build/Control/Shell.o ) Control/Shell.hs:303:5: error: • Variable not in scope: cpFilter :: (FilePath -> Bool) -> FilePath -> FilePath -> Shell b0 • Perhaps you meant ‘cpFiltered’ (line 293) cabal: Leaving directory '/tmp/cabal-tmp-14345/shellmate-0.1.2' cabal: Error: some packages failed to install: shellmate-0.1.2 failed during the building phase. The exception was: ExitFailure 1