We're getting an intermittent failure running `hg manifest` in CI. I
have no clue why.
What I do know is that we now have the mozversioncontrol Python package
for containing utility code for interacting with version control. It is
slightly more robust and I'm willing to support it more than I am
check_utils.py.
This commit adds a new API to our abstract repository class to obtain the
files in the working directory by querying version control.
Since I suspect cwd was coming into play in automation, I've also
added a utility function to mozversioncontrol to attempt to find
a version control checkout from the current working directory. It
simply traces ancestor paths looking for a .hg or .git directory.
Finally, I've ported all callers of the now-deleted API to the new
one. The old code had some "../.." paths in it, meaning it only
worked when cwd was just right. Since we resolve the absolute path
to the checkout and store it on the repo object, I've updated the
code so it should work no matter what cwd is as long as a repo can
be found. I'm not 100% confident I found all consumers assuming cwd.
But it's a start.
I'm not 100% confident this will fix the intermittent issues in CI. But
at least we should get a better error message and at least we'll be
running less hacky code.
MozReview-Commit-ID: AmCraHXcTEX
--HG--
extra : rebase_source : 815ae369776577ad374333920fd645d412a55148
Nicolas B. Pierron
Gregory Szorc
Luke Wagner
Heiher