https://hg.mozilla.org/firefox now exists. It is a unified Firefox
repository containing the heads of all the major Firefox repos
(mozilla-central, inbound, aurora, beta, release, esrs, etc).
Having 1 unified repository is more useful and incurs less overhead
than N separate repos. We want to encourage the use of the unified
repository. So, we start cloning from it.
The unified repo on the server is configured in such a way that
manifest delta chains can become very long - over 30,000 deltas. This
can make manifest reading very slow and slow down many Mercurial
operations. The server compensates for this by setting
format.maxchainlen=10000 to limit the delta chains to 10,000.
Unfortunately, this setting is not preserved when clients do a
traditional clone: the changegroup consists of a single delta chain
and the client will use its own settings (often the default) to
break the chain. This will result in the client re-creating very long
delta chains. So, as part of initializing the new repo we configure
format.maxchainlen in its .hg/hgrc so it doesn't suffer from this
performance issue.
We could achieve the same result by passing the --config option to
`hg clone`. However, the option won't be preserved in the repo's
.hg/hgrc and subsequent `hg pull` operations could result in the
creation of very long delta chains. So we need to write the config
option in the .hg/hgrc. `hg clone` is equivalent to `hg init` +
`hg pull` anyway, so we just separate out the steps and insert a
write to .hg/hgrc in between.
We also set the "default" path (like `hg clone` would do).
DONTBUILD (NPOTB)
MozReview-Commit-ID: Fs4cz9YvdCv
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I've always been bothered that the one-line bootstrap configures your system
then leaves you on the hook to clone source code and configure the build
system. I'd like the bootstrap wizard to guide you through end-to-end.
This commit addresses part of the disconnect by offering to clone the
Mercurial source repository at the end of bootstrap.
We only offer to clone if we aren't running from a Firefox source checkout
(likely the one-line bootstrap invocation) and if we are in interactive
mode.
I'd like to eventually offer Git support here. Mercurial is the canonical
repo, so it makes sense to start with that.
MozReview-Commit-ID: 6TSZwxB3702
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Without this, we attempt to execute "hg" as a native Win32 program
and get the dreaded "%1 is not a valid Win32 application" error because
"hg" has a shebang and only executes inside a UNIX-like shell.
MozReview-Commit-ID: 5sUrxh1IxFC
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bechen
Christoph Kerschbaumer
Jeff Gilbert
Randall Barker
Andrea Marchesini
Sebastian Kaspari
Nicholas Hurley
Chris Manchester
Steve Fink
Carsten "Tomcat" Book
Kartikaya Gupta
Martin Giger
Gregory Szorc
Alastor Wu
Andrew Swan
Eitan Isaacson
Thomas Wisniewski
Jonathan Kew
Sebastian Hengst
Cervantes Yu
Luke Wagner
Nicolas B. Pierron