* guix/packages.scm (package-field-location): New procedure. * build-aux/sync-synopses.scm: Use it instead of `package-location'. * tests/packages.scm ("package-field-location"): New test.
* build-aux/sync-synopses.scm: New file. * Makefile.am (EXTRA_DIST): Add it. (dist-hook): New target.