Re: [PATCH 2/2] gnu: Add gnome-tweak-tool.

[rennes@openmailbox.org]

On 2016-04-27 14:05, Jan Nieuwenhuizen wrote:
> 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

Hi,

Now this patch works well for me. Thank you