Resolving dependencies... Configuring call-stack-0.1.0... Configuring base-compat-0.10.1... Building call-stack-0.1.0... Building base-compat-0.10.1... Installed call-stack-0.1.0 Configuring clock-0.7.2... Building clock-0.7.2... Installed clock-0.7.2 Configuring colour-2.3.4... Building colour-2.3.4... Installed base-compat-0.10.1 Configuring dlist-0.8.0.4... Building dlist-0.8.0.4... Installed dlist-0.8.0.4 Configuring hashable-1.2.7.0... Building hashable-1.2.7.0... Installed colour-2.3.4 Configuring hspec-discover-2.5.3... Building hspec-discover-2.5.3... Installed hashable-1.2.7.0 Configuring integer-logarithms-1.0.2.1... Building integer-logarithms-1.0.2.1... Installed hspec-discover-2.5.3 Configuring primitive-0.6.4.0... Building primitive-0.6.4.0... Installed integer-logarithms-1.0.2.1 Configuring random-1.1... Building random-1.1... Installed random-1.1 Configuring setenv-0.1.1.3... Building setenv-0.1.1.3... Installed setenv-0.1.1.3 Configuring th-abstraction-0.2.8.0... Building th-abstraction-0.2.8.0... Installed th-abstraction-0.2.8.0 Configuring time-locale-compat-0.1.1.4... Building time-locale-compat-0.1.1.4... Installed primitive-0.6.4.0 Configuring transformers-compat-0.6.2... Installed time-locale-compat-0.1.1.4 Configuring validity-0.7.0.0... Building transformers-compat-0.6.2... Building validity-0.7.0.0... Installed validity-0.7.0.0 Configuring HUnit-1.6.0.0... Building HUnit-1.6.0.0... Installed transformers-compat-0.6.2 Configuring ansi-terminal-0.8.0.4... Building ansi-terminal-0.8.0.4... Installed HUnit-1.6.0.0 Configuring unordered-containers-0.2.9.0... Building unordered-containers-0.2.9.0... Installed ansi-terminal-0.8.0.4 Configuring uuid-types-1.0.3... Building uuid-types-1.0.3... Installed uuid-types-1.0.3 Configuring vector-0.12.0.1... Building vector-0.12.0.1... Installed unordered-containers-0.2.9.0 Configuring tf-random-0.5... Building tf-random-0.5... Installed tf-random-0.5 Configuring scientific-0.3.6.2... Building scientific-0.3.6.2... Installed scientific-0.3.6.2 Configuring tagged-0.8.5... Building tagged-0.8.5... Installed tagged-0.8.5 Configuring hspec-expectations-0.8.2... Building hspec-expectations-0.8.2... Installed hspec-expectations-0.8.2 Configuring QuickCheck-2.11.3... Building QuickCheck-2.11.3... Installed vector-0.12.0.1 Configuring attoparsec-0.13.2.2... Building attoparsec-0.13.2.2... Installed QuickCheck-2.11.3 Configuring quickcheck-io-0.2.0... Building quickcheck-io-0.2.0... Installed quickcheck-io-0.2.0 Configuring genvalidity-0.5.1.0... Building genvalidity-0.5.1.0... Installed attoparsec-0.13.2.2 Configuring hspec-core-2.5.3... Building hspec-core-2.5.3... Installed genvalidity-0.5.1.0 Configuring aeson-1.4.0.0... Building aeson-1.4.0.0... Installed hspec-core-2.5.3 Configuring hspec-2.5.3... Building hspec-2.5.3... Installed hspec-2.5.3 Configuring genvalidity-property-0.2.0.2... Building genvalidity-property-0.2.0.2... Installed genvalidity-property-0.2.0.2 Configuring genvalidity-hspec-0.6.1.0... Building genvalidity-hspec-0.6.1.0... Failed to install genvalidity-hspec-0.6.1.0 Build log ( /home/builder/.cabal/logs/ghc-8.4.3/genvalidity-hspec-0.6.1.0-DjlF6UPzHjsAKx8ZthPKbb.log ): cabal: Entering directory '/tmp/cabal-tmp-25840/genvalidity-hspec-0.6.1.0' Configuring genvalidity-hspec-0.6.1.0... Preprocessing library for genvalidity-hspec-0.6.1.0.. Building library for genvalidity-hspec-0.6.1.0.. [ 1 of 14] Compiling Paths_genvalidity_hspec ( dist/build/autogen/Paths_genvalidity_hspec.hs, dist/build/Paths_genvalidity_hspec.o ) [ 2 of 14] Compiling Test.Validity.Utils ( src/Test/Validity/Utils.hs, dist/build/Test/Validity/Utils.o ) src/Test/Validity/Utils.hs:66:18: error: • Variable not in scope: mapSpecTree :: (SpecTree () -> SpecTree ()) -> SpecWith () -> SpecWith () • Perhaps you meant ‘mapSpecItem’ (imported from Test.Hspec.Core.Spec) | 66 | failsBecause s = mapSpecTree go | ^^^^^^^^^^^ cabal: Leaving directory '/tmp/cabal-tmp-25840/genvalidity-hspec-0.6.1.0' Installed aeson-1.4.0.0 cabal: Error: some packages failed to install: genvalidity-hspec-0.6.1.0-DjlF6UPzHjsAKx8ZthPKbb failed during the building phase. The exception was: ExitFailure 1 genvalidity-hspec-aeson-0.3.0.0-IeD6T9iHxLR8FsjJDS2rC6 depends on genvalidity-hspec-aeson-0.3.0.0 which failed to install.