Warning: The install command is a part of the legacy v1 style of cabal usage. Please switch to using either the new project style and the new-install command or the legacy v1-install alias as new-style projects will become the default in the next version of cabal-install. Please file a bug if you cannot replicate a working v1- use case with the new-style commands. For more information, see: https://wiki.haskell.org/Cabal/NewBuild Resolving dependencies... Downloading LiterateMarkdown-0.1.0.0 Downloaded LiterateMarkdown-0.1.0.0 Starting LiterateMarkdown-0.1.0.0 Building LiterateMarkdown-0.1.0.0 Failed to install LiterateMarkdown-0.1.0.0 Build log ( /home/builder/.cabal/logs/ghc-8.6.3/LiterateMarkdown-0.1.0.0-KdTpX8VujhT6MpyhsBn3e0.log ): cabal: Entering directory '/tmp/cabal-tmp-30538/LiterateMarkdown-0.1.0.0' Configuring LiterateMarkdown-0.1.0.0... Preprocessing library 'converter' for LiterateMarkdown-0.1.0.0.. Building library 'converter' for LiterateMarkdown-0.1.0.0.. [1 of 1] Compiling Converter ( Converter.hs, dist/build/converter/Converter.o ) Preprocessing executable 'lhsc' for LiterateMarkdown-0.1.0.0.. Building executable 'lhsc' for LiterateMarkdown-0.1.0.0.. [1 of 2] Compiling Converter ( Converter.hs, dist/build/lhsc/lhsc-tmp/Converter.o ) [2 of 2] Compiling Main ( literate_converter.hs, dist/build/lhsc/lhsc-tmp/Main.o ) Linking dist/build/lhsc/lhsc ... Preprocessing library 'converter' for LiterateMarkdown-0.1.0.0.. Running Haddock on library 'converter' for LiterateMarkdown-0.1.0.0.. Warning: --source-* options are ignored when --hyperlinked-source is enabled. Haddock coverage: 80% ( 4 / 5) in 'Converter' Missing documentation for: Module header Documentation created: dist/doc/html/LiterateMarkdown/index.html, dist/doc/html/LiterateMarkdown/LiterateMarkdown.txt Preprocessing executable 'lhsc' for LiterateMarkdown-0.1.0.0.. Installing internal library converter in /home/builder/hackage-server/build-cache/tmp-install/lib/x86_64-linux-ghc-8.6.3/LiterateMarkdown-0.1.0.0-KdTpX8VujhT6MpyhsBn3e0 Installing executable lhsc in /home/builder/hackage-server/build-cache/tmp-install/bin Warning: The directory /home/builder/hackage-server/build-cache/tmp-install/bin is not in the system search path. cabal: Leaving directory '/tmp/cabal-tmp-30538/LiterateMarkdown-0.1.0.0' cabal: Error: some packages failed to install: LiterateMarkdown-0.1.0.0-KdTpX8VujhT6MpyhsBn3e0 failed during the final install step. The exception was: dieVerbatim: user error (cabal: '/opt/ghc/bin/ghc-pkg' exited with an error: z-LiterateMarkdown-z-converter-0.1.0.0: installed package info from too old version of Cabal (key field does not match id field) )