Subject: hg2mtn 0.0.20070824
Newsgroups: gmane.comp.version-control.monotone.devel
Date: 2007-08-24 21:40:28 GMT (1 year, 14 weeks, 4 days and 3 minutes ago)
Hi, I hereby do the first public release of hg2mtn, an importer of hg repositories into monotone. It's licensed under GPL (v2+) as it makes use of other GPL components. I first tried to write something general based on an implementation of the git-fast-import interface for mtn, but that wasn't such a good idea as it basically results in two lossy steps: whatever-to-git-semantics and git-semantics-to-mtn, so I wrote a direct hg2mtn importer now. At this time, it lacks all the usability bits (like getopt parsing, a tarball release, or sane user feedback). It requires the automate stuff of tracvc. It's probably easiest to just have the whole tracvc tree in the PYTHONPATH for now. It also requires an installation of mercurial (it basically uses its code to read the repo) The location of the hg repository, the mtn repository and the branch where all the hg stuff should end up are set in some variables in the source. I also recommend adding a transaction guard to automate stdio because mtn commits every single put_file, which leads to a massive slowdown (at least on some filesystems - on ZFS it's 4 minutes instead of 20 now) For now, it stops execution after 50 commits, you can restart and it will skip the existing revisions (that's partly a work around for the transaction guard - it really requires an "automate commit" command, so that at certain points the database state can be frozen, as otherwise all work is lost on ctrl-c). Export to mercurial shouldn't be too hard (the import keeps the hg revision as cert to every mtn revision), but that's beyond the scope of my work for now. Also missing (but on my TODO): - handling of hg tags - handling of whatever rename facility they have Some hg repos seem to contain merges that are invalid on monotone (revival of files in a merge that were killed on one side) - hg2mtn fails with an monotone invariant there. As it's one of my first large python project "from scratch", it's probably full of no-nos of python design. Patches welcome and accepted! Regards, Patrick Georgi
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