Ruby Gem package guidelines
For libraries, use
ruby-gemname. For applications, use the program name. In either case, the name should be entirely lowercase
For examples, please seeAUR AUR AUR.
--verbose to gem arguments to receive additional information in case of troubles.
--no-user-installgem argument is mandatory since latest Ruby versions (See FS#28681 for details).
An example PKGBUILD can be found at
/usr/share/pacman/PKGBUILD-rubygem.proto, which is in the package.
There is alsoAUR tools which aid in automating the process of creating a ruby gem PKGBUILD. Make sure to manually check the PKGBUILD after generation.