Hello,
since this change https://pagure.io/fesco/issue/2532 will not likely be
accepted, I would like to ask if you were willing to accept a pull request to
enable spec file preprocessing directly on rpm level. It would add a third type
of macro (except `%{}` and `%()`), which would work similarly to `%()` except
that the values (after expansion) would be put verbatim into the spec file that
goes into an srpm generated by rpmbuild.
Basically, spec files would be always passed through `preproc` utility first
before they would be handed over for further rpm processing. Enabling/disabling
of this feature would be only system-wide, not spec-wide as you need to
preprocess a template first before parsing it.
This is a way to bring innovation to rpm ecosystem mainly by:
- enabling automatic version, release, changelog, VCS generation e.g. from git
metadata
- enabling dynamic source generation e.g. from a git submodule with mirrored
upstream sources
- providing a way for automatic generation of requires and build requires by
analyzing upstream sources
The only added dependency would the `preproc` utility, which I would just
rewrite from python to C, it is less than 100 lines of code currently so it
won't be a problem.
People basically didn't like that `rpmbuild -bs` would no longer always work on
a spec file within Fedora DistGit after accepting the aforementioned change.
Having the preprocessor directly in rpm would solve that problem.
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