hgattic and mercurial 1.9 don't work
I am a big fan of hgattic. I have recently upgraded hg to 1.9, and hgattic is the cause of mercurial crashes. It turns out, version 1.9 apparently introduced a new module, mercurial.scmutils, and moved util.opener there. I attach a patch that I tested against versions 1.8.4 and 1.9 and which seems to work.