Resolving dependencies... Configuring dotgen-0.2... Building dotgen-0.2... Failed to install dotgen-0.2 Build log ( /home/builder/.cabal/logs/dotgen-0.2.log ): cabal: Entering directory '/tmp/cabal-tmp-23251/dotgen-0.2' Configuring dotgen-0.2... Building dotgen-0.2... Preprocessing library dotgen-0.2... [1 of 1] Compiling Text.Dot ( Text/Dot.hs, dist/build/Text/Dot.o ) Text/Dot.hs:54:10: error: • No instance for (Applicative Dot) arising from the superclasses of an instance declaration • In the instance declaration for ‘Monad Dot’ cabal: Leaving directory '/tmp/cabal-tmp-23251/dotgen-0.2' cabal: Error: some packages failed to install: dotgen-0.2 failed during the building phase. The exception was: ExitFailure 1 graphmod-1.1.2 depends on dotgen-0.2 which failed to install.