bug#41037: documentation for application developers?

[Bruno Haible]

Hi Ludo,

> > I would expect to find these issues discussed, at least:
> >   - hard-coded program names like /bin/pwd
> 
> These should be avoided; it’s not Guix-specific, but the problem is
> obviously more acute here.

/bin/pwd exists on all other Unix systems; so de facto it _is_ Guix
specific.

> >   - where is /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 ?
> 
> It’s in the glibc package:
> 
>   ls $(guix build glibc | grep '[0-9]$')/lib
> 
> What’s your use case?

So, the consequence is that a Guix user cannot send an executable
to another Guix user and expect it to be runnable on the other machine.
This too is Guix specific; maybe it is already documented?

> >   - libtool, ldconfig issues
> 
> ‘ldconfig’ is not used.  Nothing special for Libtool.
> Do you have something in mind?

I wanted to have background information regarding ldconfig and shared
library caches, in order to investigate bug#41038
<https://lists.gnu.org/archive/html/bug-guix/2020-05/msg00036.html>.

Bruno