rbenv: cannot find `--user-install`d gem executable

I have the following ruby versions installed via rbenv, 2.0.0-p648, 2.6.3 and 2.6.5 which both 2.6 versions have rubocop installed:

Results when using 2.6.3:

$ rbenv versions
  system
  2.0.0-p648
* 2.6.3 (set by /Users/longspell/.ruby-version)
  2.6.5
$ gem info rubocop

*** LOCAL GEMS ***

rubocop (0.80.1, 0.75.1)
    Authors: Bozhidar Batsov, Jonas Arvidsson, Yuji Nakayama
    Homepage: https://github.com/rubocop-hq/rubocop
    License: MIT
    Installed at (0.80.1): /Users/longspell/.gem/ruby/2.6.0
                 (0.75.1): /Users/longspell/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0

    Automatic Ruby code style checking tool.
$ rubocop --version
0.80.1

Results when using 2.6.5:

$ rbenv versions
  system
  2.0.0-p648
  2.6.3
* 2.6.5 (set by /Users/longspell/test/.ruby-version)
$ gem info rubocop
Ignoring byebug-11.1.1 because its extensions are not built. Try: gem pristine byebug --version 11.1.1
Ignoring io-console-0.5.6 because its extensions are not built. Try: gem pristine io-console --version 0.5.6

*** LOCAL GEMS ***

rubocop (0.80.1)
    Authors: Bozhidar Batsov, Jonas Arvidsson, Yuji Nakayama
    Homepage: https://github.com/rubocop-hq/rubocop
    License: MIT
    Installed at: /Users/longspell/.gem/ruby/2.6.0

    Automatic Ruby code style checking tool.
$ rbenv rehash
$ rubocop --version
rbenv: rubocop: command not found

The `rubocop' command exists in these Ruby versions:
  2.6.3

Same results for solargraph. Seems to be trying to use the ~/.rbenv/versions bin instead of the ~/.gems bin path. This happens even if I am on 2.6.5 and do gem install rubocop. I’ve even gone so far as to gem uninstall rubocop and remove all versions from 2.6.3, but upon gem install rubocop && rbenv rehash in 2.6.5 I’m still told rubocop only exists in 2.6.3.

About this issue

Original URL
State: closed
Created 4 years ago
Comments: 15 (4 by maintainers)

Most upvoted comments

Full disclosure, I had a long forgotten ~/.gemrc that was setting my gem installs to the user space. 😑

Thanks for the cordial responses and looking into this.

longspell on Mar 26, 2020

OK, it looks like my problem was caused by installing the Homebrew version of Tmuxinator, which installs a full version of Ruby with it:

[10:57:30] ~/.rbenv/versions  ➜ gem info rubocop

*** LOCAL GEMS ***

rubocop (0.82.0)
    Authors: Bozhidar Batsov, Jonas Arvidsson, Yuji Nakayama
    Homepage: https://github.com/rubocop-hq/rubocop
    License: MIT
    Installed at: /usr/local/Cellar/tmuxinator/2.0.1/libexec

    Automatic Ruby code style checking tool.

So I think there was some confusion between the Homebrew and Rbenv versions of Ruby 2.7.1. Uninstalling Tmuxinator and Ruby (brew uninstall tmuxinator ruby) wasn’t enough to fix it—if I reinstalled 2.7.1 using Rbenv, it would still show up in brew list. So I uninstalled Homebrew entirely and am now reinstalling everything. If that doesn’t work I’ll update this.

patbl on Jun 3, 2020