Resolving dependencies... Configuring snappy-0.2.0.2... Building snappy-0.2.0.2... Preprocessing library snappy-0.2.0.2... [1 of 3] Compiling Codec.Compression.Snappy.Internal ( Codec/Compression/Snappy/Internal.hs, dist/build/Codec/Compression/Snappy/Internal.o ) [2 of 3] Compiling Codec.Compression.Snappy.Lazy ( dist/build/Codec/Compression/Snappy/Lazy.hs, dist/build/Codec/Compression/Snappy/Lazy.o ) Codec/Compression/Snappy/Lazy.hsc:52:10: Warning: No explicit implementation for either ‘peek’ or ‘peekElemOff’ or ‘peekByteOff’ In the instance declaration for ‘Storable BS’ [3 of 3] Compiling Codec.Compression.Snappy ( Codec/Compression/Snappy.hs, dist/build/Codec/Compression/Snappy.o ) In-place registering snappy-0.2.0.2... Running Haddock for snappy-0.2.0.2... Running hscolour for snappy-0.2.0.2... Preprocessing library snappy-0.2.0.2... Preprocessing library snappy-0.2.0.2... Codec/Compression/Snappy/Lazy.hsc:52:10: Warning: No explicit implementation for either ‘peek’ or ‘peekElemOff’ or ‘peekByteOff’ In the instance declaration for ‘Storable BS’ Haddock coverage: 33% ( 1 / 3) in 'Codec.Compression.Snappy.Internal' Missing documentation for: check (Codec/Compression/Snappy/Internal.hs:31) maxCompressedLength (Codec/Compression/Snappy/Internal.hs:27) 100% ( 3 / 3) in 'Codec.Compression.Snappy.Lazy' 100% ( 3 / 3) in 'Codec.Compression.Snappy' Documentation created: dist/doc/html/snappy/index.html, dist/doc/html/snappy/snappy.txt Creating package registration file: /tmp/pkgConf-snappy-0.2.0278722862233665123.2 Installing library in /home/builder/hackage-server/build-cache/tmp-install/lib/x86_64-linux-ghc-7.10.2/snappy-0.2.0.2-JfvOptW58EIJzkpvjrJhba Registering snappy-0.2.0.2... Installed snappy-0.2.0.2 Configuring qudb-0.0.0... cabal: The following package dependencies were requested --dependency='snappy=snappy-0.2.0.2-5d8c06aec5a1d4a8ff5522ff1e1ab3ec' however the given installed package instance does not exist. Failed to install qudb-0.0.0 cabal: Error: some packages failed to install: qudb-0.0.0 failed during the configure step. The exception was: ExitFailure 1