[bug#63987] Should jinx-mod.so be installed into /.../lib or into /.../share/emacs/site-lisp/...?

[Mekeor Melire]

2023-06-18 13:56 liliana.prikler@gmail.com:

> Hi Mekeor,
>
> Am Sonntag, dem 18.06.2023 um 11:34 +0000 schrieb Mekeor Melire:
> > Hello Guix,
> >
> > my previous patch added a package definition for emacs-jinx. 
> > The
> > package definition works by installing the accompanying 
> > jinx-mod.so
> > into the package's $out/lib directory, and patching jinx.el so 
> > that
> > it loads that library from the correct path.
> >
> > The maintainer of the Emacs package suggests to rather install 
> > jinx-
> > mod.so into $out/share/emacs/site-lisp/jinx-.../ instead, i.e. 
> > right
> > next to the .el-files:
> > https://github.com/minad/jinx/issues/86#issuecomment-1596102645
> >
> > What do you think?
> The way you did it SGTM.  If you fear that it might shadow other 
> shared
> libraries (probably an unnecessary fear, but who knows?), you 
> could use
> lib/emacs instead.  Other comments will come in a separate reply 
> to
> your first mail.
>
> Stay tuned!

Daniel Mendler says: "My suggestion is that you put the library 
file [jinx-mod.so] in some appropriate directory, which must be on 
the load-path. I assume
that there exists some convention on Guix on where to install 
native modules." 
https://github.com/minad/jinx/issues/86#issuecomment-1597221252

And I think they are right. We should have a convention about where to install 
native modules (.so-files) and add that directory to Emacs' load-path.

One approach would be to use $out/lib/emacs (or a new subdirectory of it). E.g. 
we would install jinx-mod.so into that path and Guix would add it to the 
EMACSLOADPATH environment-variable. (Currently, Guix only makes use of 
.../lib/emacs/native-site-lisp which is added to EMACSNATIVELOADPATH 
environment-variable.)

Another approach would be to agree on installing *.so-files into 
$out/share/site-lisp/PACKAGE-VERSION/ so that it is already present Emacs' 
load-path as is.

What do you think?