This may be simple user error, but I get
warning: update.hgnotices hook exited with status 1
when I commit from TortoiseHg.
I believe this is because I only have Python installed as part of Cygwin, and though TortoiseHg must presumably have its own bundled copy of Python, it's not on the PATH.
Maybe there is a way to run a hook without spawning a new Python interpreter?