Fixes <https://bugs.gnu.org/28956>. Reported by Leo Famulari <leo@famulari.name>. * build-aux/build-self.scm (build): Add (guix build compile) to #:modules. * guix/build/pull.scm (build-guix): Wrap 'compile-files' call in 'with-directory-excursion'. Strip "./" from FILES when passing it to 'compile-files'.