NoMethodError

[Danh Chu Cao]

Hi guys, i am getting started with Ruby. I just installed Ruby and the gem ceedling on my window 11. But when i run the first commned "ceedling" i got the trouble like this:

C:/Users/Admin/.local/share/gem/ruby/3.3.0/gems/ceedling-0.31.1/bin/ceedling:12:in `<top (required)>': undefined method `exists?' for class File (NoMethodError)

  project_found = File.exists?(main_filepath)
                      ^^^^^^^^
Did you mean?  exist?
        from C:/Users/Admin/AppData/Local/Microsoft/WindowsApps/ceedling:32:in `load'
        from C:/Users/Admin/AppData/Local/Microsoft/WindowsApps/ceedling:32:in `<main>'

I have kept searching for the error for almost 2 hours! Please help me how to fix that!
What should i do?

Thank you so much for your advices!

[Grant Birchmeier]

Ah, I found it.  This is a ceedling problem, not a general ruby problem.

"File.exists?" was removed in ruby 3.2.0.  It had been marked as deprecated since 2.2.0, so people should have long ago stopped using it (if they paid proper attention to deprecations).  The ceedling maintainers were using it.

https://www.reddit.com/r/ruby/comments/1196wti/psa_and_a_little_rant_fileexists_direxists/

The latest ceedling gem was released in 2021, so the current version of Ruby at that time was 3.1.x or earlier.

(The rubygems page says that ceedling 0.31 is meant for Ruby >= 2.4.0, but clearly that needs an update.)

https://rubygems.org/gems/ceedling/versions/0.31.1?locale=en

The ceedling crew have fixed it in their source repo, but have not yet released a new version.  Here's that fix:

https://github.com/ThrowTheSwitch/Ceedling/commit/92f4a29ce5e7bdcf9d821d57047cd898f53e3fb5

So this sucks for you a little, because the steps to get you rolling aren't quite trivial for ruby noobs.

So, you have a few options:
* Install ruby 3.1.x and ceedling should work

* download the ceedling source and install that.  The latest ceedling might work fine with your ruby 3.2, or you could download ceedling 0.31 and just change File.exists? to File.exist?.

Maybe someone else has a better suggestion.

-Grant

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