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... Starting data-default-class-0.1.2.0 Starting dlist-0.8.0.7 Starting cereal-0.5.8.1 Starting exceptions-0.10.4 Building dlist-0.8.0.7 Building exceptions-0.10.4 Building cereal-0.5.8.1 Building data-default-class-0.1.2.0 Completed data-default-class-0.1.2.0 Starting hashable-1.3.0.0 Building hashable-1.3.0.0 Completed dlist-0.8.0.7 Starting old-locale-1.0.0.7 Building old-locale-1.0.0.7 Completed exceptions-0.10.4 Starting primitive-0.7.0.0 Completed old-locale-1.0.0.7 Starting split-0.2.3.3 Building primitive-0.7.0.0 Building split-0.2.3.3 Completed hashable-1.3.0.0 Starting unliftio-core-0.1.2.0 Building unliftio-core-0.1.2.0 Completed cereal-0.5.8.1 Starting data-default-instances-containers-0.0.1 Completed split-0.2.3.3 Starting data-default-instances-dlist-0.0.1 Building data-default-instances-containers-0.0.1 Building data-default-instances-dlist-0.0.1 Completed unliftio-core-0.1.2.0 Starting data-default-instances-old-locale-0.0.1 Building data-default-instances-old-locale-0.0.1 Completed data-default-instances-dlist-0.0.1 Starting unordered-containers-0.2.10.0 Completed data-default-instances-containers-0.0.1 Starting async-2.2.2 Building unordered-containers-0.2.10.0 Completed data-default-instances-old-locale-0.0.1 Starting data-default-0.7.1.1 Building async-2.2.2 Building data-default-0.7.1.1 Completed data-default-0.7.1.1 Completed async-2.2.2 Starting unliftio-0.2.12 Building unliftio-0.2.12 Completed primitive-0.7.0.0 Starting resourcet-1.2.2 Starting vector-0.12.0.3 Building resourcet-1.2.2 Building vector-0.12.0.3 Completed unordered-containers-0.2.10.0 Completed resourcet-1.2.2 Starting rocksdb-haskell-1.0.1 Completed unliftio-0.2.12 Failed to install rocksdb-haskell-1.0.1 Build log ( /home/builder/.cabal/logs/ghc-8.6.3/rocksdb-haskell-1.0.1-38fQVhhNSVf781btCkHxi0.log ): cabal: Entering directory '/tmp/cabal-tmp-25391/rocksdb-haskell-1.0.1' Configuring rocksdb-haskell-1.0.1... cabal: Missing dependency on a foreign library: * Missing (or bad) C library: rocksdb This problem can usually be solved by installing the system package that provides this library (you may need the "-dev" version). If the library is already installed but in a non-standard location then you can use the flags --extra-include-dirs= and --extra-lib-dirs= to specify where it is.If the library file does exist, it may contain errors that are caught by the C compiler at the preprocessing stage. In this case you can re-run configure with the verbosity flag -v3 to see the error messages. cabal: Leaving directory '/tmp/cabal-tmp-25391/rocksdb-haskell-1.0.1' Completed vector-0.12.0.3 cabal: Error: some packages failed to install: rocksdb-haskell-1.0.1-38fQVhhNSVf781btCkHxi0 failed during the configure step. The exception was: ExitFailure 1 rocksdb-query-0.3.1-9M6pYAF1rgLGNDUofmRnaP depends on rocksdb-query-0.3.1 which failed to install.