Leo Famulari writes:
Hi!
Find attached a new version of gnome-tweak-tool.
Sorry, I still don't understand. Can you explain why you want to
remove
python2 from the propagated inputs?
Propagated-inputs are silently installed into the user's profile
alongside the package that propagates them. In this case, installing
gnome-tweak-tool would also install python2 into the user's profile.
Propagation becomes attractive when the software provided by a package
does not have a good mechanism for finding its dependencies. For
example, some software may *only* be able to find a dependency by
looking on PATH. Gnome-tweak-tool, as far as we know, has this
limitation for python2.
The problem with propagating inputs is that only one version of a
given
package may be installed into a user's profile. This is in contrast to
"regular" inputs, which are not installed into a user's profile.
Indeed,
every package that you install into your profile could refer to a
different version of, say, libfoo, by linking directly to the various
libfoos' directories in the store.
So, letting gnome-tweak-tool propagate python2 would prevent a Python
programmer from choosing which version of python2 they want in their
profile; they'd be forced to choose between gnome-tweak-tool or their
desired python2.
Does that make sense?
That makes sense. Thanks for your explanation! Is this documented
somewhere? I think it should be.
An alternative to propagated-inputs is to use a wrapper. Actually, all
of our packages using the python-build-system are wrapped
automatically
[0]. The wrapper makes the dependent packages available in the
run-time
environment without polluting the user's profile, while introducing a
reference to the dependencies into the store directory, which makes
sure
that the garbage collector works correctly.
Does that make sense?
Yes. Moved python to inputs, added python wrapper.
Hopefully, I've got that all right — I'll be happy if somebody
clarifies
or corrects me!
[0] If gnome-tweak-tool did not break convention by using the
Autotools
to build Python software, this discussion would not be happening ;)
Hah! ;-)
Greetings,
Jan