Resolving dependencies...
Configuring text-1.2.2.1...
Building text-1.2.2.1...
Installed text-1.2.2.1
Configuring hashable-1.2.4.0...
Building hashable-1.2.4.0...
Installed hashable-1.2.4.0
Configuring unordered-containers-0.2.7.1...
Building unordered-containers-0.2.7.1...
Installed unordered-containers-0.2.7.1
Configuring igraph-0.1...
Failed to install igraph-0.1
Build log ( /home/builder/.cabal/logs/igraph-0.1.log ):
cabal: Entering directory '/tmp/cabal-tmp-29675/igraph-0.1'
Configuring igraph-0.1...
cabal: Missing dependency on a foreign library:
* Missing C library: igraph
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.
cabal: Leaving directory '/tmp/cabal-tmp-29675/igraph-0.1'
cabal: Error: some packages failed to install:
igraph-0.1 failed during the configure step. The exception was:
ExitFailure 1