Re: Questions about packaging

[Tanguy Le Carrour <tanguy@bioneland.org>]

Hi Marius,


Le 10/18, Marius Bakke a écrit :
> Tanguy Le Carrour <tanguy@bioneland.org> writes:
> > In Guix, we have Pytest 4.4.2, but the latest release is 5.2.1.
> > In that case, would it make sense to define a new "versionned" public
> > variable for python-pytest? Would I create python-pytest5? Or would I
> > rename python-pytest to python-pytest4 and add python-pytest for Pytest
> > 5? In this later case, would I have to "fix" all the packages that were
> > using python-pytest?!
> 
> Pytest has 4457 dependent packages and can thus only be changed on the
> 'core-updates' branch.  So the recommended way is indeed to define a new
> public 'python-pytest-5' variable, and add that as an input for the
> packages that require 5.x.

OK… sounds like something I can do!


> On the next 'core-updates' cycle, Pytest 5 will then become the default,
> and we will have to fix all packages that does not work with that
> version :-)

I guess those broken packages will show up as "red" in Cuirass!?
Would they have to be fixed, or just told to use python-pytest-4?

Is there a way to build those packages on my machine? What a
script to find and build all the packages dependent on pytest would look like?
I mean, using LISP/Scheme/Guile, as I think I could come up with a
"manual" solution with `guix graph --type=reverse-package`.


Regards,

-- 
Tanguy