Macports AMUSE package

[rieder]

Is your feature request related to a problem? Please describe.
Macports is our suggested way of installing AMUSE prerequisites on macOS. Offering AMUSE as Macports packages would therefore allow us to install AMUSE in one go with the prerequisites.

Describe alternatives you've considered
Just offering pip packages works, but if we install Amuse as a Macports package the prerequisites will automatically be managed, which will also allow binary packages.

Additional context
Analogue to #294 and #525

[rieder]

In Macports, there is the "variants" option that we can use to specify the MPI flavour to use.
E.g. "port install amuse-framework +openmpi" or "port install amuse-framework +mpich", where either of these would be the default. Other AMUSE packages would have to use this same variant.

[rieder]

https://guide.macports.org/#development

[rieder]

This seems like it's very doable so I'll try to make a package for amuse-framework soon.

[ipelupessy]

I think @merijn had a homebrew package...

[merijn]

Yeah, I made a homebrew package which is here: https://github.com/nlesc/homebrew-nlesc

It's, uh, beta quality ;)

[rieder]

Let's keep Homebrew in a separate issue though (just opened #527), it's quite different from macports.

[rieder]

Here's a first version of a Portfile for amuse-framework. It seems to work for me but is probably still lacking in many ways (for instance, many versions are hard-coded).
https://gist.github.com/rieder/b065f4ec562f0e93a3891c5db8cd9c1f