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-ordlist-0.4.7.0
Starting     exceptions-0.10.4
Starting     cereal-0.5.8.1
Starting     hashable-1.3.0.0
Building     data-ordlist-0.4.7.0
Building     exceptions-0.10.4
Building     hashable-1.3.0.0
Building     cereal-0.5.8.1
Completed    data-ordlist-0.4.7.0
Starting     primitive-0.7.0.0
Building     primitive-0.7.0.0
Completed    hashable-1.3.0.0
Starting     safe-0.3.18
Completed    exceptions-0.10.4
Starting     split-0.2.3.3
Building     safe-0.3.18
Building     split-0.2.3.3
Completed    split-0.2.3.3
Starting     syb-0.7.1
Completed    cereal-0.5.8.1
Starting     th-abstraction-0.3.2.0
Building     syb-0.7.1
Building     th-abstraction-0.3.2.0
Completed    safe-0.3.18
Starting     unliftio-core-0.1.2.0
Building     unliftio-core-0.1.2.0
Completed    unliftio-core-0.1.2.0
Starting     unordered-containers-0.2.10.0
Building     unordered-containers-0.2.10.0
Completed    syb-0.7.1
Starting     th-expand-syns-0.4.5.0
Building     th-expand-syns-0.4.5.0
Completed    th-abstraction-0.3.2.0
Starting     th-lift-0.8.1
Building     th-lift-0.8.1
Completed    th-expand-syns-0.4.5.0
Starting     th-reify-many-0.1.9
Building     th-reify-many-0.1.9
Completed    primitive-0.7.0.0
Starting     vector-0.12.1.2
Completed    th-lift-0.8.1
Starting     resourcet-1.2.2
Building     vector-0.12.1.2
Building     resourcet-1.2.2
Completed    th-reify-many-0.1.9
Completed    resourcet-1.2.2
Completed    unordered-containers-0.2.10.0
Completed    vector-0.12.1.2
Starting     th-lift-instances-0.1.14
Starting     vector-algorithms-0.8.0.3
Building     vector-algorithms-0.8.0.3
Building     th-lift-instances-0.1.14
Completed    th-lift-instances-0.1.14
Starting     th-orphans-0.13.9
Building     th-orphans-0.13.9
Completed    vector-algorithms-0.8.0.3
Starting     mono-traversable-1.0.15.1
Building     mono-traversable-1.0.15.1
Completed    th-orphans-0.13.9
Starting     th-desugar-1.9
Building     th-desugar-1.9
Completed    mono-traversable-1.0.15.1
Starting     conduit-1.3.1.2
Building     conduit-1.3.1.2
Completed    th-desugar-1.9
Starting     singletons-2.5.1
Building     singletons-2.5.1
Completed    conduit-1.3.1.2
Completed    singletons-2.5.1
Starting     haskell-igraph-0.8.0
Building     haskell-igraph-0.8.0
Failed to install haskell-igraph-0.8.0
Build log ( /home/builder/.cabal/logs/ghc-8.6.3/haskell-igraph-0.8.0-25SnO5wDm6DOxl5MdimZk.log ):
cabal: Entering directory '/tmp/cabal-tmp-17074/haskell-igraph-0.8.0'
Configuring haskell-igraph-0.8.0...
Preprocessing library for haskell-igraph-0.8.0..
c2hs: C header contains errors:

/usr/include/stdlib.h:140: (column 17) [ERROR]  >>> Syntax error !
  The symbol `strtof32' does not fit here.

cabal: Leaving directory '/tmp/cabal-tmp-17074/haskell-igraph-0.8.0'
cabal: Error: some packages failed to install:
haskell-igraph-0.8.0-25SnO5wDm6DOxl5MdimZk failed during the building phase.
The exception was:
ExitFailure 1