py-skyfield depends on both cython and cython-devel

[Marius Schamschula]

Kevin,

It is not your fault!

py-cython and py-cython-devel (cython 3.0.x) are incompatible, but the many packages haven’t been updated and still use the legacy version. This needs to be fixed upstream.

py-yaml still needs py-cython, whereas py-astropy has been updated and requires py-cython-devel.

However, as both packages install into the same location, you get a deadlock.

I work around this issue, by deactivating the version not needed at the time and activating the needed one. YMMV.

Marius
--
Marius Schamschula




> On Dec 14, 2023, at 7:41 PM, Kevin Horton <kevin01 at kilohotel.com> wrote:
> 
> I'm trying to install py-skyfield and it is failing with:
> 
> --->  Computing dependencies for py-skyfield
> Error: Can't install py311-cython-devel because conflicting ports are active: py311-cython
> 
> 
> Digging deeper, 'port rdeps py-skyfield' shows (output trimmed to only show the relevant dependency chain):
> 
> The following ports are dependencies of py-skyfield @1.46_0:
>  py311-skyfield
>    py311-astropy
>      py311-cython-devel
>      cfitsio
>        gcc13
>          gcc13-libcxx
>            clang-16
>              py311-yaml
>                py311-cython
> 
> Is this situation possibly due to something I have done that can be corrected? Or, Is there a way I can reconcile the requirement to have both cython and cython-devel installed?
> 
> Thanks,
> 
> Kevin Horton

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