haskell/cabal — pull request #1638 by juhp (2014-01-02 09:19:51+00:00)
Title: do not warn about no docs for rts-1.0

Every time the haddock command is run Cabal outputs
an unhelpful warning:

Warning: The documentation for the following packages are not installed. No
links will be generated to these packages: rts-1.0

Excluding rts, which has no docs, will allow meaningful
warnings about missing docs only to be displayed.