Re: [PATCH] gnu: Add p7zip.

[Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de>]

Hi Kei,

> This patch should install p7zip correctly on every architecture
> supported by Guix. Ideally, this should be tested it on each arch for
> the sake of completeness and safety. I've got x86_64 covered so far. :-)

thank you for this patch!

I see that you took care of removing non-free parts in a patch and a
build phase.  Since “guix build -S p7zip” doesn’t run the build phase
users would still end up with a source archive containing the non-free
parts.  The best way is thus to remove things in a snippet.

In “shogun” from the “machine-learning” module we remove supporting code
for non-free features in a snippet by cutting out anything between some
ifdef markers, but looking at the patch I see that it wouldn’t be
feasible for p7zip.

About the new configure phase: I think you could avoid copying the
Makefile by using “#:make-flags” similar to this:

    #:make-flags
    (list (string-append "-f "
                         ((string-prefix? "x86_64" system)
                          "makefile.linux_amd64_asm")
                         …)

What do you think?

~~ Ricardo