Resolving dependencies...
Configuring mtl-2.2.1...
Configuring primitive-0.6.1.0...
Building primitive-0.6.1.0...
Building mtl-2.2.1...
Installed mtl-2.2.1
Configuring random-1.1...
Installed primitive-0.6.1.0
Configuring text-1.2.2.1...
Building random-1.1...
Building text-1.2.2.1...
Configuring utf8-string-1.0.1.1...
Installed random-1.1
Building utf8-string-1.0.1.1...
Installed utf8-string-1.0.1.1
Configuring vector-0.11.0.0...
Building vector-0.11.0.0...
Installed text-1.2.2.1
Configuring hashable-1.2.5.0...
Building hashable-1.2.5.0...
Installed hashable-1.2.5.0
Installed vector-0.11.0.0
Configuring hashtables-1.2.1.0...
Building hashtables-1.2.1.0...
Installed hashtables-1.2.1.0
Configuring gtk2hs-buildtools-0.13.2.1...
Building gtk2hs-buildtools-0.13.2.1...
Installed gtk2hs-buildtools-0.13.2.1
Configuring cairo-0.13.3.1...
Configuring glib-0.13.4.1...
Building glib-0.13.4.1...
Building cairo-0.13.3.1...
Installed cairo-0.13.3.1
Installed glib-0.13.4.1
Configuring gio-0.13.3.1...
Configuring pango-0.13.3.1...
Building gio-0.13.3.1...
Building pango-0.13.3.1...
Installed pango-0.13.3.1
Installed gio-0.13.3.1
Configuring gtk-0.14.6...
Building gtk-0.14.6...
Installed gtk-0.14.6
Configuring testpattern-0.1...
Building testpattern-0.1...
Failed to install testpattern-0.1
Build log ( /home/builder/.cabal/logs/testpattern-0.1.log ):
cabal: Entering directory '/tmp/cabal-tmp-7209/testpattern-0.1'
Configuring testpattern-0.1...
Building testpattern-0.1...
Preprocessing executable 'testpattern' for testpattern-0.1...
[1 of 2] Compiling Paths_testpattern ( dist/build/autogen/Paths_testpattern.hs, dist/build/testpattern/testpattern-tmp/Paths_testpattern.o )
[2 of 2] Compiling Main             ( Main.hs, dist/build/testpattern/testpattern-tmp/Main.o )

Main.hs:32:38: error: Not in scope: data constructor ‘Key’

Main.hs:32:43: error:
    Not in scope: ‘eventKeyChar’
    Perhaps you meant ‘eventKeyVal’ (imported from Graphics.UI.Gtk)
cabal: Leaving directory '/tmp/cabal-tmp-7209/testpattern-0.1'
cabal: Error: some packages failed to install:
testpattern-0.1 failed during the building phase. The exception was:
ExitFailure 1