Unknown ruby interpreter version (do not know how to handle): File.readFile.join__dir_

I just installed a new react native project v 0.71.1. As soon as the cd into my project I get any error saying

RVM used your Gemfile for selecting Ruby, it is all fine - Heroku does that too,
you can ignore these warnings with 'rvm rvmrc warning ignore /Users/transformhub/Desktop/rnapp/Gemfile'.
To ignore the warning for all files run 'rvm rvmrc warning ignore allGemfiles'.

Unknown ruby interpreter version (do not know how to handle): File.readFile.join__dir__,.ruby-version.strip.

Once I cd to iOS directory to enable the new architecture using bundle install && RCT_NEW_ARCH_ENABLED=1 bundle exec pod install

I get an error saying

[!] There was an error parsing `Gemfile`: No such file or directory @ rb_sysopen - /Users/transformhub/Desktop/rnapp/.ruby-version. Bundler cannot continue.

 #  from /Users/transformhub/Desktop/rnapp/Gemfile:4
 #  -------------------------------------------
 #  # You may use http://rbenv.org/ or https://rvm.io/ to install and use this version
 >  ruby File.read(File.join(__dir__, '.ruby-version')).strip
 #  
 #  -------------------------------------------

My ruby version is ruby 3.2.0 (2022-12-25 revision a528908271) [arm64-darwin22]

I tried doing rvm get stable --auto-dotfiles

but I still get error saying Unknown ruby interpreter version (do not know how to handle): File.readFile.join__dir__,.ruby-version.strip.

I also tried doing rbenv install 2.7.6, 2.7.6 is the version recommended by react-native but I get error saying

readline.c:1904:37: error: use of undeclared identifier 'username_completion_function'; did you mean 'rl_username_completion_function'?
                                    rl_username_completion_function);
                                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

readline.c:79:42: note: expanded from macro 'rl_username_completion_function'
# define rl_username_completion_function username_completion_function
                                         ^
/opt/homebrew/opt/readline/include/readline/readline.h:494:14: note: 'rl_username_completion_function' declared here
extern char *rl_username_completion_function (const char *, int);
             ^
1 error generated.
make[2]: *** [readline.o] Error 1

Below is the output of echo $PATH

/Users/transformhub/.rbenv/shims:/Users/transformhub/.rbenv/shims:/Users/transformhub/.rbenv/bin:/Users/transformhub/.rbenv/shims:/opt/homebrew/opt/ruby/bin:/Users/transformhub/.gem/bin:/Users/transformhub/.pyenv/shims:/Users/transformhub/.pyenv/bin:/Users/transformhub/.pyenv/bin:/Users/transformhub/.rbenv/shims:/Users/transformhub/.rbenv/bin:/Library/Frameworks/Python.framework/Versions/3.9/bin:/opt/homebrew/bin:/opt/homebrew/sbin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/Users/transformhub/Desktop/flutter/bin :/usr/local/go/bin:/usr/local/share/dotnet:~/.dotnet/tools:/Library/Apple/usr/bin:/Library/Frameworks/Mono.framework/Versions/Current/Commands:/Applications/Postgres.app/Contents/Versions/latest/bin:/Users/transformhub/Library/Android/sdk/platform-tools:/Users/transformhub/Users/transformhub/Desktop/flutter/bin:/Users/transformhub/Android/Sdk/tools:/Users/transformhub/Android/Sdk/tools/bin:/Users/transformhub/Android/Sdk/platform-tools:/Library/Frameworks/Python.framework/Versions/3.9/bin:/opt/homebrew/bin:/opt/homebrew/sbin:/Users/transformhub/Desktop/flutter/bin:/Users/transformhub/.cargo/bin:/Users/transformhub/.rvm/bin

CodePudding user response：

You need a file .ruby-version that states the ruby version:

simply do: echo "2.7.6" > .ruby-version in the project directory.

If the file already exists install the version set on this file.

Regarding the installation error please take a look at: Installing ruby with ruby-install causes error out on Mac M1 which seems to address the same problem.