[git] freeze to tag if possible

[gracinet]

Commits aren't persistent in Git, and that has been a major topic in the recent refactor of the Git support for the recipe.

For better efficiency, the freeze option should stop using shas in its output. Instead, it should introspect HEAD for tags it could have and use what it's found. Ideally it should not even accept to freeze if no tag is available, but that would be too disruptive for users' current workflows (odoo produces almost no tags)
It could also produce a tag of its own, but that would be useful only for those that manage their own forks. One can imagine lots of options to control that behaviour (tag only if needed, always tag, tag naming policy etc.)

The open question would be which tag to use if the HEAD has several of them. Maybe we can add an option to control that (with a regexp, a prefix) ?

[bwrsandman]

Not sure if related but AUR VCS standards has some nice recommended commands

git describe --long | sed -r 's/([^-]*-g)/r\1/;s/-/./g'
2.0.r6.ga17a017

git describe --long --tags | sed -r 's/([^-]*-g)/r\1/;s/-/./g'
0.71.r115.gd95ee07

https://wiki.archlinux.org/index.php/VCS_PKGBUILD_Guidelines#Git

[gracinet]

@bwrsandman thanks for the tip

[sandreanybox]

Hey @gracinet,
I tried to freeze a new release this morning and the new behavior seems perfect.
Thanks about the support !

[cmsalmeida]

I did the,

bin/buildout -o openerp-server-1:freeze-to=frozen.cfg

it generated the frozen.cfg

but it doesn't build according to does revisions on frozen.cfg, even after called the bootstrap.py again

python bootstrap.py -c frozen.cfg && bin/buildout

what should I'm doing wrong?

Thanks in advance!

[gracinet]

Hi @cmsalmeida, you should use the frozen.cfg in the bin/buildout command too, that's the one doing most of the job:

python bootstrap.py -c frozen.cfg && bin/buildout -c frozen.cfg

bootstrap is mostly about installing zc.buildout itself (and its dependencies). In most cases you won't see a difference if you don't pass it frozen.cfg too, but the probability to get an actual difference (failed buildout) will grow with time.

[cmsalmeida]

Thank you!
👍