give access to current profile path and base path in section

[Łukasz Nowak]

Imagine a situation:

buildout.cfg (on local machine):
[buildout]
extends = http://remote-server/slave.cfg

http://remote-server/slave.cfg
[buildout]
parts = complex

[complex]
recipe = recipe.to.build.crazy.software
source = http://software/vendor/tarball.tgz
patch = patch_repository/important.patch

The patch is published in http://remote-server/patch_repository/important.patch

Currently it will not work, forcing me to download http://remote-server/patch_repository/important.patch.
To not be forced to download I would have to override its location, but then I would need to track remote changes, or in case of many extends, it will make extends unmaintainable.

I'd like to have mechanism, that it would be possible to have a parameter (lets say ${:_profile_base_location_}) in section, which would expand to http://remote-server/ in above example.

So slave.cfg would look like:

[buildout]
parts = complex

[complex]
recipe = recipe.to.build.crazy.software
source = http://software/vendor/tarball.tgz
patch = ${:_profile_base_location_}/patch_repository/important.patch

Which would make it work in being remotely extended (or used) and locally downloaded (with patch_repository/important.patch directory available) cases.

[Łukasz Nowak (ionowaklukasz)]

Please see attached implementation proposal and test.

[Marius Gedminas (mgedmin)]

https://github.com/buildout/buildout/pull/68

[Marius Gedminas (mgedmin)]

Oops, was supposed to be https://github.com/buildout/buildout/pull/36