I have a very old darcs1 format repo with a _darcs/current directory instead of
the newer _darcs/pristine.

After upgrading to darcs 2.3.0, the 'darcs whatsnew' command returns the error:

  darcs: ./_darcs/pristine: changeWorkingDirectory: does not exist (No such file
or directory)

Using darcs 2.2.0, the normal output of whatsnew is displayed.

After moving the _darcs/current directory to _darcs/pristine, whatsnew works
correctly under darcs 2.3.0.

darcs should either continue to look for a 'current' directory when 'pristine'
is missing, or should prompt the user to rename that directory.

Hi Petr,

Sounds like this would be of interest to you.

Easy fix indeed, I have checked this in on hashed-storage-0.3 branch. I have
also just released hashed-storage 0.3.7 (this includes the fix), so rebuilding
darcs against this version should fix the problem. I'll make sure that in darcs
2.3.1, we'll bump the dependency hashed-storage to 0.3.7.