* guix-package.in (show-help, %options): Add `--list-installed'. (guix-package): Move main body to... [process-actions]: ... here. New internal procedure. [process-query]: New procedure. * tests/guix-package.sh: Add tests for `--list-installed'. * doc/guix.texi (Invoking guix-package): Document it.
* guix-package.in (guix-package)[find-package]: Return the correct NAME and SUB-DRV when NAME contains #\:. * tests/guix-package.sh (profile): Add test.
* guix-package.in, tests/guix-package.sh: New files. * configure.ac: Output `guix-package'. * Makefile.am (TESTS): Add `tests/guix-package.sh'. (bin_SCRIPTS): Add `guix-package'.