bug#43893: [PATCH v3] maint: update-guix-package: Prevent accidentally breaking guix pull.

[Maxim Cournoyer <maxim.cournoyer@gmail.com>]

Hi Ludovic,

Ludovic Courtès <ludo@gnu.org> writes:

[...]

>> Currently, we have:
>>
>> time make update-guix-package
>> git rev-parse HEAD
>> 4893a1394e2eb8b97995b491f2f37ed85513a20f
>> ./pre-inst-env "/gnu/store/i7z4pfa0c22q0qkxyl7fy2nlp3w658yg-profile/bin/guile"                  \
>>    ./build-aux/update-guix-package.scm  \
>>    "`git rev-parse HEAD`"
>> error: Commit 4893a1394e2eb8b97995b491f2f37ed85513a20f is not pushed upstream.  Aborting.
>> make: *** [Makefile:6507: update-guix-package] Error 1
>
> I agree that the better diagnostic is nice.  Though it’s a script that’s
> essentially for a handful of people, who can certainly cope with the
> ugly error.
>
> Anyway, I think we didn’t analyze the initial situation well enough
> (myself included, by not commenting early and accurately).  I’m also not
> fond of the added complexity and the risk of surprises when we make the
> release, but OTOH, it’s no big deal in the big picture!

I'm sorry but I don't agree with the "we didn't analyze the initial
situation well enough"; if I had to think about the best way to solve
this problem now, I'd still choose the way that was chosen then, as it
provides the best guarantee against producing a broken Guix package,
something that happened a couple times in the past, judging from git
log.  About complexity, I'd much rather the tool break on me than
breaking 'guix pull' for everyone :-).

It seems we'll have to disagree on this one; but as you said, it's a
tiny part of the bigger landscape!

>>> BTW, in ‘make release’ does ‘make update-guix-package’ and expects it to
>>> work with a not-pushed-yet commit.  So it’s a case where we need
>>> GUIX_ALLOW_ME_TO_USE_PRIVATE_COMMIT=yes.

I want to be able to run 'make release' first to test this works
correctly, but even after rebuilding my source tree from scratch
(following a 'make distclean'), and also attempting 'make download-po',
and following release.org from guix-maintenance, I still get:

make[3]: *** No rule to make target 'po/doc/guix-manual.pot', needed by 'distdir-am'.  Stop.
make[3]: Leaving directory '/home/maxim/src/guix'
make[2]: *** [Makefile:5521: distdir] Error 2
make[2]: Leaving directory '/home/maxim/src/guix'
make[1]: *** [Makefile:5630: dist] Error 2
make[1]: Leaving directory '/home/maxim/src/guix'
make: *** [Makefile:6410: dist-with-updated-version] Error 2

Can you reproduce this problem?

Thank you,

Maxim