rpkg is missing on f26+

[praiskup]

Mock scm plugin now depends on rpkg binary (and copr-builder too) to work with dist-git lookaside cache, but that script was removed from Fedora (see https://bugzilla.redhat.com/1400592). IOW: starting from mock.fc26 this feature won't work as host machine won't have rpkg script available.

As I sort of agree that reintroducing rpkg package doesn't make much sense, I propose temporary work-around -> providing rpkg script as part of mock package.

Long term solution: Koji (and Brew) uses fedpkg-minimal vs. rhpkg-simple packages. Those packages are installed only for the purpose of building source RPM (those packages explicitly collide with fedpkg and rhpkg respectively. So, ideally we should have something like rpkg-minimal package which would suite all: Koji, Brew, Copr, Mock... So rpkg-minimal should be:

• written in shell (or very simple C), to allow installation into minimal buildroot without dependancy pollution)
• should have some trivial plug-in mechanism, so distributions can package upstream code and add one distribution-specific plugin file for distro-specific issues
• rpkg-minimal must be non-colliding with fedpkg, rpkg, rhpkg, and so on ... so instead of calling /usr/bin/rpkg one should explicitly ask for /usr/bin/rpkg-minimal.

@xsuchy, @clime, @pbabinca wdyt?

[pbabinca]

Fine with me. @tkdchen FIY.

[clime]

I am ok with rpkg-minimal.

[tkdchen]

Fine with me too.

What else can rpkg-minimal do besides downloading sources files from lookaside?

[clime]

I would like to see it launching builds in COPR.

[praiskup]

would like to see it launching builds in COPR.

By that you mean that rpkg-minimal will be used by copr?

[praiskup]

I mean -> rpkg-minimal should be really "minimal". Ideally, there should be no copr-related code (only distribution-specific code, as a plugin).

[clime]

From the point of mock-scm plugin, it only needs to be able to download sources.

Please, see also https://bugzilla.redhat.com/show_bug.cgi?id=1400592.

[praiskup]

@pbabinca, while rpkg package is probably needed -- asynchronously I'm thinking about "how to merge fedpkg-minimal and rhpkg-simple" idea. What are the reasons to install those packages into "chroot" instead of having them installed on host (side-by-side with mock)?

[clime]

rpkg-client-0.8 (providing 'rpkg' command-line utitility) has been pushed to stable for Fedora. It will also be available on EPEL7.

[xsuchy]

So this should be resolved now.