Re: Google Summer of Code 2013 (GSoC13)

From: Jeff King <peff@peff.net>
Date: Feb 18, 2013, 21:07 UTC
Message-ID: <20130218210709.GC27308@sigill.intra.peff.net>
In-Reply-To: <CALkWK0mKZLotuu7pEM_3Of3i6JzU12QV_pHxOZTUr22TOq3PeQ@mail.gmail.com>

On Tue, Feb 19, 2013 at 02:14:54AM +0530, Ramkumar Ramachandra wrote:

Show 9 quoted lines

> >  - assimilating the distro builds: "make deb-pkg", "make rpm-pkg",
> >    etc along the same lines as the linux kernel's script/package/,
> >    to help people get recent git installed when they want it
> 
> Overkill.  I just symlink to bin-wrapper/git from a place high up in
> my $PATH.  If anything, we should be making it easier for ourselves to
> run different versions of git right from $HOME, much like rbenv.
> System-wide installs are taken care of by the distribution package
> managers, and I doubt they need any help from us.

This is not related to GSoC anymore, but I think handling multiple versions is already pretty easy. You can just install to "$HOME/local/git/$TAGNAME" or similar, and then symlink the "bin/git" binary from there into your PATH as git.$TAGNAME (e.g., git.v1.7.8). Git already takes care of the messy bits, like making sure sub-programs are invoked from the same git version.

I already do this automagically with this script:

  https://github.com/peff/git/blob/meta/install/prefix

I just set "prefix" in the Makefile based on the script, and when I "make install" tags or topic branches, they go to the right place (and the "links" script in the same directory maintains the symlinks for me).

I never bothered to even submit those scripts to contrib, because I figured they were so specific to my setup, and to keeping dozens of git versions around (when debugging, it's nice to be able to check an old version's behavior without even having to build it).

Of course that has nothing to do with Jonathan's proposal. I do agree that it is pretty straightforward to just put $BUILD_DIR/bin-wrappers in your PATH and be done. I guess that doesn't cover manpages, though (but Real Programmers just read the source anyway, right?).

-Peff