Resolving dependencies... Configuring html-1.0.1.2... Configuring mtl-2.2.1... Building html-1.0.1.2... Building mtl-2.2.1... Configuring syb-0.6... Installed html-1.0.1.2 Building syb-0.6... Configuring text-1.2.2.1... Installed mtl-2.2.1 Building text-1.2.2.1... Configuring regex-base-0.93.2... Installed syb-0.6 Building regex-base-0.93.2... Installed regex-base-0.93.2 Configuring regex-posix-0.95.2... Building regex-posix-0.95.2... Installed regex-posix-0.95.2 Installed text-1.2.2.1 Configuring parsec-3.1.11... Building parsec-3.1.11... Installed parsec-3.1.11 Configuring csv-0.1.2... Configuring json-0.9.1... Building json-0.9.1... Building csv-0.1.2... Configuring txt-sushi-0.6.0... Installed csv-0.1.2 Building txt-sushi-0.6.0... Configuring tabular-0.2.2.7... Installed json-0.9.1 Building tabular-0.2.2.7... Installed tabular-0.2.2.7 Installed txt-sushi-0.6.0 Configuring csv-nptools-0.3.0... Building csv-nptools-0.3.0... Failed to install csv-nptools-0.3.0 Build log ( /home/builder/.cabal/logs/csv-nptools-0.3.0.log ): cabal: Entering directory '/tmp/cabal-tmp-16948/csv-nptools-0.3.0' Configuring csv-nptools-0.3.0... Building csv-nptools-0.3.0... Preprocessing executable 'csv2html' for csv-nptools-0.3.0... [1 of 1] Compiling Main ( csv2html.hs, dist/build/csv2html/csv2html-tmp/Main.o ) Linking dist/build/csv2html/csv2html ... Preprocessing executable 'csv2json' for csv-nptools-0.3.0... [1 of 1] Compiling Main ( csv2json.hs, dist/build/csv2json/csv2json-tmp/Main.o ) csv2json.hs:5:1: error: Failed to load interface for ‘Utils’ Perhaps you meant Util (needs flag -package-key ghc-8.0.1.20161018) Use -v to see a list of the files searched for. cabal: Leaving directory '/tmp/cabal-tmp-16948/csv-nptools-0.3.0' cabal: Error: some packages failed to install: csv-nptools-0.3.0 failed during the building phase. The exception was: ExitFailure 1