> Perhaps we should add a test to catch this specific case so that it
> doesn’t pop up again?

Yes, we should. But, there is a problem. "make check
TESTS=tests/lint.scm" fails with the following error message even on
master.

make[4]: *** [Makefile:4920: tests/lint.log] Error 1
make[4]: Leaving directory '/home/foo/guix'
make[3]: *** [Makefile:4902: check-TESTS] Error 2
make[3]: Leaving directory '/home/foo/guix'
make[2]: *** [Makefile:5145: check-am] Error 2
make[2]: Leaving directory '/home/foo/guix'
make[1]: *** [Makefile:4679: check-recursive] Error 1
make[1]: Leaving directory '/home/foo/guix'
make: *** [Makefile:5147: check] Error 2

On examining tests/lint.log, I find the following error message.

gnu/packages/lisp.scm:3806:7: In procedure inputs:
error: xclip: unbound variable

But, this makes no sense to me. Any idea what's happening?

Should I immediately push the patch I sent in the last mail, and then
deal with this problem separately? Without that patch, the linter is
faulty and might annoy people.