Since installing GHC 7.4.1 (from sources), I'm getting lots of complaints from 'ghc-pkg check', of the following form:
Warning: haddock-interfaces: /usr/local/share/doc/transformers-0.2.2.0/html/transformers.haddock doesn't exist or isn't a file Warning: haddock-html: /usr/local/share/doc/transformers-0.2.2.0/html doesn't exist or isn't a directory
Happens both on (Red Hat) Linux 5 and Mac OS 10.6.8.