Re: Optional runtime dependencies in Guix

[Ricardo Wurmus]

Ludovic Courtès writes:

> Gammel Holte <address@hidden> skribis:
>
>> For example, consider samtools, a package I use daily and that was recently
>> committed to Guix:
>>
>> http://git.savannah.gnu.org/cgit/guix.git/tree/gnu/packages/bioinformatics.scm#n139
>>
>> It forces me to install python. In contrast, consider Arch AUR's package:
>>
>> https://aur.archlinux.org/packages/samtools/
>
> From looking at the page above, it seems that it would be feasible to
> simply move varfilter.py to a different output.  That way, users would
> be able to install the default output (which doesn’t depend on Python),
> or the “python” output.  Ricardo, WDYT?

I could try to exclude this from the default output and install just the
Python files in a separate "python" output.

Is there a way to specify inputs that are required by certain outputs
only?  Then I could make the new "python" output depend on the Python
package as an input.