Incident occurred

It was one day

$ bundle install

When you enter

Traceback (most recent call last):
~/.rbenv/versions/2.5.0/bin/ruby: invalid option -:  (-h will show valid options) (RuntimeError)

Yeah yeah what is this! It doesn't accept other commands, what did you do ...

Let's look back on the past

I must have done something deadly ...

Ruby: Developed with 2.7

(My environment)/vendor/bundle/ruby/2.7.0/gems/active_hash-3.1.0/lib/associations/associations.rb:22: warning: Using the last argument as keyword parameters is deprecated; maybe ** should be added to the call
(My environment)/vendor/bundle/ruby/2.7.0/gems/activerecord-6.0.3.1/lib/active_record/associations.rb:1657: warning: The called method `belongs_to' is defined here

I get a lot of warnings when I enter Rails commands and it's annoying The gem warning is important, but ok

Deal with adding environment variables

export RUBYOPT='-W:no-deprecated -W:no-experimental'

The warning disappeared when I added the above to .zshrc It's stress-free

I had to lower the version of Ruby and develop it

Since development with another version became indispensable, I lowered the version (Ruby: 2.5)

Traceback (most recent call last):
~/.rbenv/versions/2.5.0/bin/ruby: invalid option -:  (-h will show valid options) (RuntimeError)

Until now, this didn't happen with another version ...

Conclusion

export RUBYOPT='-W:no-deprecated -W:no-experimental'

I solved it by removing this from the environment variables. Don't forget to remove it when the gem version goes up and you don't get any warnings.

reference

https://qiita.com/mojihige/items/ce3282bec0c58f8ba637 https://qiita.com/hirocueki2/items/010c777d2125ee120a8e

[RAILS] I changed the Ruby version and now I can't bundle install