If you use mercurial from MacPorts, you need the following in your ~/.hgrc to enable the hgk extension (GUI tree browser, invoked with hg view):

[extensions]
hgk=

[hgk]
path=/opt/local/share/mercurial/contrib/hgk

While you're in there, enable the mq, fetch, and record extensions.

by Hans Fugal at 6:23 PM under hg , hgk , macports , mercurial