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     wl-pprint-1.2.1
Starting     hashable-1.2.7.0
Building     wl-pprint-1.2.1
Building     hashable-1.2.7.0
Completed    wl-pprint-1.2.1
Completed    hashable-1.2.7.0
Starting     unordered-containers-0.2.9.0
Building     unordered-containers-0.2.9.0
Completed    unordered-containers-0.2.9.0
Starting     expresso-0.1.0.2
Building     expresso-0.1.0.2
Failed to install expresso-0.1.0.2
Build log ( /home/builder/.cabal/logs/ghc-8.6.3/expresso-0.1.0.2-JBy1CEjJt172qAaBtcVn5R.log ):
cabal: Entering directory '/tmp/cabal-tmp-32557/expresso-0.1.0.2'
Configuring expresso-0.1.0.2...
Preprocessing library for expresso-0.1.0.2..
Building library for expresso-0.1.0.2..
[1 of 8] Compiling Expresso.Pretty  ( src/Expresso/Pretty.hs, dist/build/Expresso/Pretty.o )
[2 of 8] Compiling Expresso.Utils   ( src/Expresso/Utils.hs, dist/build/Expresso/Utils.o )
[3 of 8] Compiling Expresso.Type    ( src/Expresso/Type.hs, dist/build/Expresso/Type.o )
[4 of 8] Compiling Expresso.Syntax  ( src/Expresso/Syntax.hs, dist/build/Expresso/Syntax.o )
[5 of 8] Compiling Expresso.TypeCheck ( src/Expresso/TypeCheck.hs, dist/build/Expresso/TypeCheck.o )
[6 of 8] Compiling Expresso.Parser  ( src/Expresso/Parser.hs, dist/build/Expresso/Parser.o )
[7 of 8] Compiling Expresso.Eval    ( src/Expresso/Eval.hs, dist/build/Expresso/Eval.o )
[8 of 8] Compiling Expresso         ( src/Expresso.hs, dist/build/Expresso.o )
/usr/bin/ld.gold: error: cannot find -ltinfo
collect2: error: ld returned 1 exit status
`gcc' failed in phase `Linker'. (Exit code: 1)
cabal: Leaving directory '/tmp/cabal-tmp-32557/expresso-0.1.0.2'
cabal: Error: some packages failed to install:
expresso-0.1.0.2-JBy1CEjJt172qAaBtcVn5R failed during the building phase. The
exception was:
ExitFailure 1