Resolving dependencies...
Configuring utf8-string-1.0.1.1...
Building utf8-string-1.0.1.1...
Installed utf8-string-1.0.1.1
Configuring CHXHtml-0.1.2...
Building CHXHtml-0.1.2...
Failed to install CHXHtml-0.1.2
Build log ( /home/builder/.cabal/logs/CHXHtml-0.1.2.log ):
cabal: Entering directory '/tmp/cabal-tmp-17949/CHXHtml-0.1.2'
Configuring CHXHtml-0.1.2...
Building CHXHtml-0.1.2...
Preprocessing library CHXHtml-0.1.2...
[1 of 3] Compiling Text.CHXHtml.XHtml1_transitional ( Text/CHXHtml/XHtml1_transitional.hs, dist/build/Text/CHXHtml/XHtml1_transitional.o )

Text/CHXHtml/XHtml1_transitional.hs:53:1: error:
    Failed to load interface for ‘Text.Regex.Posix’
    Use -v to see a list of the files searched for.
cabal: Leaving directory '/tmp/cabal-tmp-17949/CHXHtml-0.1.2'
cabal: Error: some packages failed to install:
CHXHtml-0.1.2 failed during the building phase. The exception was:
ExitFailure 1