Before, the entire directory was deleted and recreated, which fails if we want to sign libraries (shlibsign is obviously deleted in that step as well), so we delete everything but "nss-config" on postFixup.
Before, the entire directory was deleted and recreated, which fails if we want to sign libraries (shlibsign is obviously deleted in that step as well), so we delete everything but "nss-config" on postFixup.