Resolving dependencies...
Configuring data-default-class-0.1.2.0...
Configuring dlist-0.8.0.2...
Building data-default-class-0.1.2.0...
Building dlist-0.8.0.2...
Installed data-default-class-0.1.2.0
Configuring mtl-2.2.1...
Building mtl-2.2.1...
Configuring old-locale-1.0.0.7...
Installed dlist-0.8.0.2
Building old-locale-1.0.0.7...
Configuring stm-2.4.4.1...
Installed old-locale-1.0.0.7
Building stm-2.4.4.1...
Configuring text-1.2.2.1...
Installed mtl-2.2.1
Building text-1.2.2.1...
Configuring utf8-string-1.0.1.1...
Installed stm-2.4.4.1
Building utf8-string-1.0.1.1...
Configuring data-default-instances-containers-0.0.1...
Installed utf8-string-1.0.1.1
Building data-default-instances-containers-0.0.1...
Installed data-default-instances-containers-0.0.1
Configuring data-default-instances-dlist-0.0.1...
Building data-default-instances-dlist-0.0.1...
Configuring data-default-instances-old-locale-0.0.1...
Installed data-default-instances-dlist-0.0.1
Building data-default-instances-old-locale-0.0.1...
Configuring old-time-1.1.0.3...
Installed data-default-instances-old-locale-0.0.1
Building old-time-1.1.0.3...
Configuring data-default-0.7.1.1...
Installed old-time-1.1.0.3
Building data-default-0.7.1.1...
Installed text-1.2.2.1
Configuring parsec-3.1.11...
Building parsec-3.1.11...
Installed data-default-0.7.1.1
Configuring X11-1.7...
Building X11-1.7...
Installed parsec-3.1.11
Installed X11-1.7
Configuring X11-xft-0.3.1...
Building X11-xft-0.3.1...
Installed X11-xft-0.3.1
Configuring xmobar-0.9...
Building xmobar-0.9...
Failed to install xmobar-0.9
Build log ( /home/builder/.cabal/logs/xmobar-0.9.log ):
cabal: Entering directory '/tmp/cabal-tmp-7424/xmobar-0.9'
Configuring xmobar-0.9...
Warning: 'ghc-options: -prof' is not necessary and will lead to problems when
used on a library. Use the configure flag --enable-library-profiling and/or
--enable-profiling.
Building xmobar-0.9...
Preprocessing executable 'xmobar' for xmobar-0.9...

XUtil.hsc:1:12: warning:
    -fglasgow-exts is deprecated: Use individual extensions instead

Runnable.hs-boot:1:12: warning:
    -fglasgow-exts is deprecated: Use individual extensions instead

Runnable.hs:1:12: warning:
    -fglasgow-exts is deprecated: Use individual extensions instead

Xmobar.hs:1:12: warning:
    -fglasgow-exts is deprecated: Use individual extensions instead
[ 1 of 25] Compiling XUtil            ( dist/build/xmobar/xmobar-tmp/XUtil.hs, dist/build/xmobar/xmobar-tmp/XUtil.o )

XUtil.hsc:43:1: error:
    Failed to load interface for ‘System.IO.UTF8’
    Use -v to see a list of the files searched for.
cabal: Leaving directory '/tmp/cabal-tmp-7424/xmobar-0.9'
cabal: Error: some packages failed to install:
xmobar-0.9 failed during the building phase. The exception was:
ExitFailure 1