Resolving dependencies... Configuring clock-0.7.2... Configuring blaze-builder-0.4.1.0... Building clock-0.7.2... Building blaze-builder-0.4.1.0... Installed clock-0.7.2 Configuring colour-2.3.4... Building colour-2.3.4... Installed blaze-builder-0.4.1.0 Configuring generic-deriving-1.12.1... Building generic-deriving-1.12.1... Installed colour-2.3.4 Configuring semigroups-0.18.4... Building semigroups-0.18.4... Installed semigroups-0.18.4 Configuring transformers-compat-0.6.2... Building transformers-compat-0.6.2... Installed transformers-compat-0.6.2 Configuring unbounded-delays-0.1.1.0... Building unbounded-delays-0.1.1.0... Installed unbounded-delays-0.1.1.0 Configuring wcwidth-0.0.2... Building wcwidth-0.0.2... Installed wcwidth-0.0.2 Configuring blaze-markup-0.8.2.1... Building blaze-markup-0.8.2.1... Installed generic-deriving-1.12.1 Configuring ansi-terminal-0.8.0.4... Installed blaze-markup-0.8.2.1 Configuring tagged-0.8.5... Building ansi-terminal-0.8.0.4... Building tagged-0.8.5... Installed ansi-terminal-0.8.0.4 Configuring blaze-html-0.9.1.1... Installed tagged-0.8.5 Configuring ansi-wl-pprint-0.6.8.2... Building blaze-html-0.9.1.1... Building ansi-wl-pprint-0.6.8.2... Installed ansi-wl-pprint-0.6.8.2 Configuring optparse-applicative-0.14.2.0... Building optparse-applicative-0.14.2.0... Installed optparse-applicative-0.14.2.0 Configuring tasty-1.1.0.2... Building tasty-1.1.0.2... Installed blaze-html-0.9.1.1 Installed tasty-1.1.0.2 Configuring tasty-html-0.4.1.2... Building tasty-html-0.4.1.2... Failed to install tasty-html-0.4.1.2 Build log ( /home/builder/.cabal/logs/ghc-8.2.2/tasty-html-0.4.1.2-CbSPIcQzAzR1tuorBFVdYO.log ): cabal: Entering directory '/tmp/cabal-tmp-5034/tasty-html-0.4.1.2' Configuring tasty-html-0.4.1.2... Preprocessing library for tasty-html-0.4.1.2.. Building library for tasty-html-0.4.1.2.. [1 of 2] Compiling Paths_tasty_html ( dist/build/autogen/Paths_tasty_html.hs, dist/build/Paths_tasty_html.o ) [2 of 2] Compiling Test.Tasty.Runners.Html ( Test/Tasty/Runners/Html.hs, dist/build/Test/Tasty/Runners/Html.o ) Test/Tasty/Runners/Html.hs:116:10: error: Not in scope: type constructor or class ‘Semigroup’ Perhaps you want to add ‘Semigroup’ to the import list in the import of ‘Data.Semigroup’ (Test/Tasty/Runners/Html.hs:20:1-28). | 116 | instance Semigroup Summary where | ^^^^^^^^^ cabal: Leaving directory '/tmp/cabal-tmp-5034/tasty-html-0.4.1.2' cabal: Error: some packages failed to install: tasty-html-0.4.1.2-CbSPIcQzAzR1tuorBFVdYO failed during the building phase. The exception was: ExitFailure 1