>>> repo-add custom.db.tar.gz \*.pkg.tar.xz
==> Adding package 'firefox-14.0.1-1-i686.pkg.tar.xz'
-> Computing checksums...
-> Creating 'desc' db entry...
-> Creating 'depends' db entry...
==> Creating updated database file custom.db.tar.gz
>>> pacman -S custom/firefox
>>> repo-remove custom.db.tar.gz firefox