Resolving dependencies... Configuring leancheck-0.6.0... Configuring cmdargs-0.10.14... Building leancheck-0.6.0... Building cmdargs-0.10.14... Installed leancheck-0.6.0 Installed cmdargs-0.10.14 Downloading fitspec-0.2.0... Configuring fitspec-0.2.0... Building fitspec-0.2.0... Failed to install fitspec-0.2.0 Build log ( /home/builder/.cabal/logs/fitspec-0.2.0.log ): cabal: Entering directory '/tmp/cabal-tmp-23025/fitspec-0.2.0' Configuring fitspec-0.2.0... Building fitspec-0.2.0... Preprocessing library fitspec-0.2.0... [ 1 of 14] Compiling FitSpec.Utils ( FitSpec/Utils.hs, dist/build/FitSpec/Utils.o ) [ 2 of 14] Compiling FitSpec.PrettyPrint ( FitSpec/PrettyPrint.hs, dist/build/FitSpec/PrettyPrint.o ) [ 3 of 14] Compiling FitSpec.ShowMutable ( FitSpec/ShowMutable.hs, dist/build/FitSpec/ShowMutable.o ) FitSpec/ShowMutable.hs:15:1: error: Failed to load interface for ‘Test.Check.Error’ Perhaps you meant Test.LeanCheck.Error (from leancheck-0.6.0) Use -v to see a list of the files searched for. cabal: Leaving directory '/tmp/cabal-tmp-23025/fitspec-0.2.0' cabal: Error: some packages failed to install: fitspec-0.2.0 failed during the building phase. The exception was: ExitFailure 1