On Sun, Jan 16, 2022 at 07:16:11PM +0100, Maxime Devos wrote:
> > +(modify-phases %standard-phases
> > +  (add-before 'check 'fix-home-directory
> > +    (lambda _
> > +      (setenv "HOME" "/tmp"))))
> > +@end lisp
> 
> Sometimes ‘hand-written, automake/cmake/... is bloat!’-style Makefiles
> install things to $HOME in the 'install' target, maybe you could give
> something like that as an example for when setting HOME to /tmp won't
> work?

As I suggested in my reply (concurrent to yours), this use of /tmp is
not something we need to document authoritatively. Rather, packagers
have to make a judgement about how to handle package build scripts that
try using $HOME.