[Slackbuilds-users] Installing scipy on -current

[Jeremy Hansen]

There are a lot of roadblocks with updating some python packages on 15.0.

I've wanted to update scipy, but it required a newer cython than included
with Slackware. Once I found *Yth - Arnaud*'s python3-cython-opt package, I
looked at updating scipy, but realized it needed a newer numpy, and there
were a LOT of packages that relied on numpy (150ish).

I worked through about 5 of the packages I maintain before I found another
roadblock that required some random version of a package that wasn't the
latest, which required I downgrade another updated package to an earlier
version (but newer than what I originally had), which had a cascade effect
on other packages I updated.

After realizing the issues I was getting into with just the packages I
maintain with the newer python3-numpy (which I don't maintain), I brushed
it off and realized that I didn't have the time to go through to test all
150 programs to get everything updated. Plus there's several packages I
can't upgrade because they require a python version newer than 3.9.

SciPy and several others will probably sit until the Slackware 15.1 or 16.0
is released. Until then, you might have to rely on pip to get some python
software installed.

Jeremy

On Sat, Sep 13, 2025, 11:02 PM J. Milgram <milgram at cgpp.com> wrote:

>
> Yup, installing the mainstream Slackware package cleared it up. scipy
> now builds without a hitch. Thanks for the tip!
>
> Along the way, the pythran dependency problem went away. Can't figure
> out why but it doesn't matter.
>
> Now I'm stuck at matplotlib:
>
> ERROR Missing dependencies:
>          numpy<2.3,>=1.24.4
>
> The Slackware python-numpy package is v2.3.3. Haven't dug into it too
> closely but I wonder if the matplotlib slackbuild needs to be updated
> (currently builds matplotlib 3.8.4; upstream is 3.10). Could give it a
> try, but does someone know a solution that's closer at hand?
>
> thanks!
>
> Judah
>
>
>
> On 9/11/25 10:59, J. Milgram wrote:
> > Cool!  I don't think I have the Slackware package installed. I'll
> > check it out and report back. Thanks.
> >
> >
> >> On Sep 11, 2025 at 10:56, K. Eugene Carlson <kvngncrlsn at gmail.com>
> >> wrote:
> >>
> >>
> >>
> >> On Thu, Sep 11, 2025 at 9:38 PM J. Milgram <milgram at cgpp.com> wrote:
> >>
> >>
> >>     The numpy dependency is a tough one. If I try to install numpy
> >>     directly with
> >>
> >>     sboinstall numpy (or python3-numpy)
> >>
> >>     I get...
> >>     numpy not found; skipping. (or: python3-numpy not found; skipping.)
> >>
> >>
> >> Is the Slackware package python-numpy installed? It was added last
> >> month, at which time python3-numpy was dropped from the -current repo.
> >>
> >> Best regards,
> >>
> >> Gene
> >>
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