On Wed, Oct 25, 2023 at 4:23 PM Vít Ondruch <vondruch@redhat.com> wrote:
Exploring possibilities to better organize gems, I have just discovered
a `--vendor` option (after almost 10 years of existence of this flag


$ gem install gem2rpm --vendor --no-user-install
Fetching gem2rpm-1.0.2.gem
ERROR:  While executing gem ... (Errno::EACCES)
     Permission denied @ dir_s_mkdir - /usr/share/ruby/vendor_ruby/gems
     /usr/share/ruby/fileutils.rb:406:in `mkdir'

... snip ...


This option apparently tries to install gems into
`/usr/share/ruby/vendor_ruby/gems` and I wonder, isn't this location we
should be using for gems distributed by Fedora? The main advantage is
that we would not be mixing default/bundled gems with ours. The downside
is that it probably does not support binary extensions out of the box.


Oddly enough, this seems to be the initial purpose:

* Added vendor gem support to RubyGems.  Package managers may now install gems
  in Gem.vendor_dir with the --vendor option to gem install.  Issue #943 by
  Marcus Rückert.

It even comes with a message, that you should uninstall that gem with a package manager, not `gem ...`.

Good find!