I have had sometimes bad run times for "whatsnew -s" on darcs.net's
Clearly, finding out which files are conflicting can be costlier than
just running a diff of the working copy. For a start, we need to read
patches. This means "whatsnew -s" on lazy repositories will imply
What do we know about the function patchsetConflictResolutions, and can
we improve its performance?