[tahoe-lafs-trac-stream] [tahoe-lafs] #1644: move to git

[tahoe-lafs]

#1644: move to git
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 Reporter:  warner              |          Owner:  somebody
     Type:  task                |         Status:  new
 Priority:  major               |      Milestone:  soon (release n/a)
Component:  dev-infrastructure  |        Version:  n/a
 Keywords:                      |  Launchpad Bug:
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 We've decided to move to git. As #1226 points out, keeping Tahoe in
 darcs is an unfortunate barrier to entry. This ticket tracks the
 process.

 We'll use the repo that I've been maintaining through a creaky
 manually-run bidirectional darcs-to-git bridge, and publish on github. I
 started publishing it under my personal account (and thus it has a few
 dozen forks), but I created a new "Organization" account and we should
 publicize that one as the official repo (on github, at least):

  https://github.com/tahoe-lafs/tahoe-lafs

 The bridge only handles linear history, so until we drop darcs
 completely, I'll be rebasing and linearizing everything that touches
 master. The official repo will only contain a "master" branch, for now:
 later we'll figure out a release process, and add the 1.8.3 branch back
 in (which is currently unrepresented in git).

 Steps:

 * ~~Set up "tahoe-lafs" Github "Organization" account~~
 * ~~Set up post-commit webhook to update
   {{{tahoe-lafs.org:/home/source/git/tahoe-lafs.git}}} upon changes~~
 * Add "git" repo/branch to Trac
  * this is currently stuck at some old revision: I'm not sure why, maybe
    some bug in the trac-git plugin
 * ~~Set up git-based buildmaster~~
 * Migrate all slaves to the git-based buildmaster
  * create entries for all slaves
  * port all Builders (add buildbot "categories" to mark Builders as
    "supported", "performance", "packaging", etc, to simplify web
    display)
  * port the index.html page
  * shut down old buildmaster, change slaveport of new buildmaster to
    match the old one: boom, all slaves now connect to the new buildmaster
  * get Git installed on all buildslaves that lack it
 * Stop updating darcs repo, freeze it
 * Build tool to modify Trac DB {{{[DARCS-REVID]}}} comments to git-based
   {{{[REVID/git]}}}
 * Run revid-mapping tool
 * Switch Trac "default branch" to git
 * Replace DB comments with {{{[REVID/git]}}} to just {{{[REVID]}}}
 * Remove darcs branch from Trac

-- 
Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/1644>
tahoe-lafs <https://tahoe-lafs.org>
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