Resolving dependencies... Downloading kparams-0.1.0.1 Downloaded kparams-0.1.0.1 Starting kparams-0.1.0.1 Building kparams-0.1.0.1 Failed to install kparams-0.1.0.1 Build log ( /home/builder/.cabal/logs/ghc-8.10.2/kparams-0.1.0.1-dpOnHZu2cGeJIVmXZKF9.log ): cabal: Entering directory '/tmp/cabal-tmp-24732/kparams-0.1.0.1' Configuring kparams-0.1.0.1... Preprocessing library 'internal' for kparams-0.1.0.1.. Building library 'internal' for kparams-0.1.0.1.. [1 of 1] Compiling Kparams.Internal ( src/Kparams/Internal.hs, dist/build/internal/Kparams/Internal.o, dist/build/internal/Kparams/Internal.dyn_o ) Preprocessing executable 'kparams' for kparams-0.1.0.1.. Building executable 'kparams' for kparams-0.1.0.1.. [1 of 2] Compiling Kparams.Internal ( src/Kparams/Internal.hs, dist/build/kparams/kparams-tmp/Kparams/Internal.o ) [2 of 2] Compiling Main ( src/Main.hs, dist/build/kparams/kparams-tmp/Main.o ) Linking dist/build/kparams/kparams ... Preprocessing library 'internal' for kparams-0.1.0.1.. Running Haddock on library 'internal' for kparams-0.1.0.1.. Warning: --source-* options are ignored when --hyperlinked-source is enabled. Haddock coverage: 0% ( 0 / 5) in 'Kparams.Internal' Missing documentation for: Module header word (src/Kparams/Internal.hs:6) wordsplit (src/Kparams/Internal.hs:27) var (src/Kparams/Internal.hs:33) find (src/Kparams/Internal.hs:41) Documentation created: dist/doc/html/kparams/index.html, dist/doc/html/kparams/kparams.txt Preprocessing executable 'kparams' for kparams-0.1.0.1.. Installing internal library internal in /home/builder/hackage-server/build-cache/tmp-install/lib/x86_64-linux-ghc-8.10.2/kparams-0.1.0.1-dpOnHZu2cGeJIVmXZKF9 Installing executable kparams 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-24732/kparams-0.1.0.1' cabal: Error: some packages failed to install: kparams-0.1.0.1-dpOnHZu2cGeJIVmXZKF9 failed during the final install step. The exception was: dieVerbatim: user error (cabal: '/opt/ghc/bin/ghc-pkg' exited with an error: z-kparams-z-internal-0.1.0.1: installed package info from too old version of Cabal (key field does not match id field) )