ERROR: Error installing rails zeitwerk requires Ruby version >= 2.4.4

Question

I recently changed my laptop and tried installing rails with

gem install rails

and I got this error

ERROR:  Error installing rails:
    zeitwerk requires Ruby version >= 2.4.4.

I have installed ruby version 2.4.4, 2.5.7, and 2.6.5 and I'm still getting the same error. Any pointers how to resolve this will be greatly appreciated. thanks

How did you install Ruby, and how do you know what versions of Ruby you have, and how do you know that you're using Ruby >= 2.4.4 when you try to install Rails? — anothermh, Dec 18 '19 at 17:07
I installed ruby using ```rbenv install 2.5.7 ``` and switched to 2.5.7 with ```rbenv global 2.5.7``` — Ayogu Chibueze, Dec 18 '19 at 17:09
Did you `rbenv rehash`? https://github.com/rbenv/rbenv#rbenv-rehash What does `ruby -v` return? — anothermh, Dec 18 '19 at 17:20
yes I did ```rbenv rehash``` and ```ruby -v``` returns ```ruby 2.5.7p206 (2019-10-01 revision 67816) [x86_64-darwin18]```. — Ayogu Chibueze, Dec 18 '19 at 17:32
I had the same error, try: `rvm install 2.4.4` and then `rvm use 2.4.4` — Jesal, Feb 03 '20 at 21:14
@codemick yes I uninstalled everything and started afresh. Just ensure all your gem are installed in one folder and the version manager you are using has access to it. — Ayogu Chibueze, May 13 '20 at 12:13

score 2 · Answer 1 · answered May 30 '20 at 19:59

2

In directory wanted use rvm use ruby-2.5.7 command line to force the usage of this specific version of ruby and after gem install rails. Just tryed minutes ago and works fine

answered May 30 '20 at 19:59

fl0_9

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3
12

score 1 · Answer 2 · answered Oct 21 '20 at 15:57

Another workaround for this specific issue if you don't care about having a newer version of Ruby (and rails), you can just install the most recent compatible version of rails with your version of ruby, a similar example with sprockets which requires ruby v2.5.0 solved by installing an older version of rails v4.1.16 looking at the dependencies graph:

sudo gem install rails -v 4.1.16

ERROR: Error installing rails zeitwerk requires Ruby version >= 2.4.4

2 Answers2