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Re: Accepted blends 0.6.101 (source) into experimental

Andreas Tille <andreas@an3as.eu> writes:
> I've tested this but I get:
> /usr/share/blends-dev/blend-gen-control  -r UNRELEASED -S -t
> Can't open file /var/lib/apt/lists/_tmp_autopkgtest.qDlH8X_binaries_Packages: No such file or directory
> I do not have permission to write to /var/lib/debtags/
> Traceback (most recent call last):
>   File "/usr/lib/python3/dist-packages/apt/cache.py", line 462, in update
>     pulse_interval)
> apt_pkg.Error: E:Problem executing scripts APT::Update::Post-Invoke-Success 'test -x /usr/bin/apt-show-versions || exit 0 ; apt-show-versions -i', E:Sub-process returned an error code
> During handling of the above exception, another exception occurred:
> Traceback (most recent call last):
>   File "/usr/share/blends-dev/blend-gen-control", line 794, in <module>
>     blend += aptcache(args.release)
>   File "/usr/share/blends-dev/blend-gen-control", line 729, in aptcache
>     c.update()

That is strange. For me it works well for Debian med (after manually
removing the backslashes in tasks/cloud):

$ sed  -i '1i Format: https://blends.debian.org/blends/1.1' tasks/*
$ make dist
rm -f debian-med-tasks.desc debian/control
make -f debian/rules get-orig-source
make[1]: Verzeichnis „<<BUILDDIR>>/med“ wird betreten
make -f /usr/share/blends-dev/Makefile debian-med-tasks.desc
make[2]: Verzeichnis „<<BUILDDIR>>/med“ wird betreten
/usr/share/blends-dev/blend-gen-control  -r UNRELEASED -S -t
make[2]: Verzeichnis „<<BUILDDIR>>/med“ wird verlassen
make -f /usr/share/blends-dev/Makefile debian/control
make[2]: Verzeichnis „<<BUILDDIR>>/med“ wird betreten
/usr/share/blends-dev/blend-gen-control  -r UNRELEASED -S -c -m
Missing 351 packages downgraded to `suggests`:
make[2]: Verzeichnis „<<BUILDDIR>>/med“ wird verlassen
make[1]: Verzeichnis „<<BUILDDIR>>/med“ wird verlassen
$ git diff -w debian-med-tasks.desc
$ git diff -w debian/control
[changes seem useful]

And if you look at lines 722ff. of blend-gen-control, the code to create
the cache is

    d = tempfile.mkdtemp()
    os.makedirs(os.path.join(d, 'etc', 'apt'))
                    os.path.join(d, 'etc', 'apt', 'trusted.gpg.d'))
                    os.path.join(d, 'etc', 'apt', 'sources.list'))
    c = apt.Cache(rootdir=d, memonly=True)

The cache is created with `rootdir=d`, with `d` being a temporary
directory, which should be fully accessible for you. It seems that it is
ignored in your version of python3-apt.

And when I try to run apt in python without changing the root dir, I
directly get a

>>> import apt
>>> c = apt.Cache()
>>> c.update()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3/dist-packages/apt/cache.py", line 442, in update
    raise LockFailedException("Failed to lock %s" % lockfile)
apt.cache.LockFailedException: Failed to lock /var/lib/apt/lists/lock

So, I can't reproduce your result. Maybe you have some weird environment
variables set that influence the behaviour of apt?

> I'm running this command as normal user (not root) and think that we
> should not require root permissions to create blends metapackages.

Sure; I also don't run it as root.

> BTW, I think the rewrite of the script is a good reason to bump the
> version of the package to 0.7.

I'd think the same.



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