Ruby installation is missing Psych. Ruby yaml extension not compiled #1251

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1. DirtyF

   changed the title [-]Ruby installation is miissing Psych, Ruby yaml extension not compiled[/-] [+]Ruby installation is missing Psych. Ruby yaml extension not compiled[/+] on Nov 8, 2018
2. hsbt commented on Nov 8, 2018

   

   hsbt

   on Nov 8, 2018

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   Your pysch extension(~/gems/gems/psych-3.0.3/lib/psych.bundle) was built by 2.5.x.

   👍React with 👍2Reacted by Frank Taillandier and Diney Wankhede
3. DirtyF commented on Nov 8, 2018

   

   DirtyF

   on Nov 8, 2018

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   @hsbt thanks, by uninstalling psych, rbenv installed ruby 2.6.0-preview3 without errors:

   Installed ruby-2.6.0-preview3 to /Users/frank/.rbenv/versions/2.6.0-preview3

   🎉React with 🎉2Reacted by Frank Taillandier and Diney Wankhede
4. DirtyF

   closed this as completedon Nov 8, 2018
5. taliesinpenbardd commented on Dec 12, 2018

   

   taliesinpenbardd

   on Dec 12, 2018

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   Same problem here. gem command won't respond to anything :

   To eliminate this warning, please install libyaml and reinstall your ruby.
   Traceback (most recent call last):
   	15: from /usr/local/bin/gem:21:in `<main>'
   	14: from /usr/local/Cellar/ruby/2.5.3_1/lib/ruby/2.5.0/rubygems/gem_runner.rb:44:in `run'
   	13: from /usr/local/Cellar/ruby/2.5.3_1/lib/ruby/2.5.0/rubygems/gem_runner.rb:79:in `do_configuration'
   	12: from /usr/local/Cellar/ruby/2.5.3_1/lib/ruby/2.5.0/rubygems/gem_runner.rb:79:in `new'
   	11: from /usr/local/Cellar/ruby/2.5.3_1/lib/ruby/2.5.0/rubygems/config_file.rb:202:in `initialize'
   	10: from /usr/local/Cellar/ruby/2.5.3_1/lib/ruby/2.5.0/rubygems/config_file.rb:349:in `load_file'
   	 9: from /usr/local/Cellar/ruby/2.5.3_1/lib/ruby/2.5.0/rubygems.rb:729:in `load_yaml'
   	 8: from /usr/local/Cellar/ruby/2.5.3_1/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
   	 7: from /usr/local/Cellar/ruby/2.5.3_1/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
   	 6: from /usr/local/Cellar/ruby/2.5.3_1/lib/ruby/2.5.0/yaml.rb:6:in `<top (required)>'
   	 5: from /usr/local/Cellar/ruby/2.5.3_1/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
   	 4: from /usr/local/Cellar/ruby/2.5.3_1/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
   	 3: from /Users/lucdlb/.rvm/gems/ruby-2.5.1/gems/psych-3.0.3/lib/psych.rb:13:in `<top (required)>'
   	 2: from /Users/lucdlb/.rvm/gems/ruby-2.5.1/gems/psych-3.0.3/lib/psych.rb:16:in `rescue in <top (required)>'
   	 1: from /usr/local/Cellar/ruby/2.5.3_1/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
   /usr/local/Cellar/ruby/2.5.3_1/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require': incompatible library version - /Users/username/.rvm/gems/ruby-2.5.1/gems/psych-3.0.3/lib/psych.bundle (LoadError)
   

   ruby -v:
   ruby 2.5.3p105 (2018-10-18 revision 65156) [x86_64-darwin18]

   OS :
   Mac OS X Mojave 10.14.1

   Any idea how to debug that ?
6. DirtyF commented on Dec 12, 2018

   

   DirtyF

   on Dec 12, 2018

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   @taliesinpenbardd so you can not run gem unsinstall psych? Maybe try to remove /Users/username/.rvm/gems/ruby-2.5.1/gems/psych-3.0.3/ manually?
7. taliesinpenbardd commented on Dec 12, 2018

   

   taliesinpenbardd

   on Dec 12, 2018

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   @DirtyF I've finally uninstalled RVM, and tried my luck with RBENV. No luck so far, I still can't use the gems I've installed (and reinstalled). I suppose it's a wrong installation location on the system, or perhaps a permissions problem. Still looking, but I guess it's out of the focus of this ticket.
   Thanks anyway.
8. DirtyF commented on Dec 12, 2018

   

   DirtyF

   on Dec 12, 2018

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   @taliesinpenbardd FWIW you can choose to store your gems in your home directory, by adding the following to your shell config file:

   export GEM_HOME=$HOME/gems
   export PATH=$HOME/gems/bin:$PATH
   

   👍React with 👍3Reacted by Nelson Mfinda, Diney Wankhede and Đỗ Công Phước Anh

   🎉React with 🎉2Reacted by Nelson Mfinda and Diney Wankhede
9. taliesinpenbardd commented on Dec 13, 2018

   

   taliesinpenbardd

   on Dec 13, 2018

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   @DirtyF Thank you very much, it seems to work. (and thank you also, I did discover Jekyll and am gonna use it sometime in the future. 😄 )
10. farisarie commented on Apr 27, 2022

    

    farisarie

    on Apr 27, 2022

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    i have a problem when i trying to installing feedkit library and this warning showup I didn't find any solution, do u know what I should do?

    /System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/yaml.rb:3: warning: It seems your ruby installation is missing psych (for YAML output).
    To eliminate this warning, please install libyaml and reinstall your ruby.
    /Library/Ruby/Site/2.6.0/rubygems/core_ext/kernel_require.rb:85:in `require': dlopen(/Library/Ruby/Gems/2.6.0/gems/psych-4.0.2/lib/psych.bundle, 0x0009): tried: '/Library/Ruby/Gems/2.6.0/gems/psych-4.0.2/lib/psych.bundle' (mach-o file, but is an incompatible architecture (have 'arm64', need 'x86_64')), '/usr/lib/psych.bundle' (no such file) - /Library/Ruby/Gems/2.6.0/gems/psych-4.0.2/lib/psych.bundle (LoadError)
11. eertmanhidde commented on May 5, 2022

    

    eertmanhidde

    on May 5, 2022

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    Running gem uninstall psych from my older ruby version(2.7.2) fixed the issue for me
12. askdesigners commented on Jul 15, 2022

    

    askdesigners

    on Jul 15, 2022

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    I get this when trying to uninstall
    Gem psych-4.0.3 cannot be uninstalled because it is a default gem
13. rbenv

    locked and limited conversation to collaborators on Jul 15, 2022
14. hsbt

    converted this issue into a discussion #2012 on Jul 15, 2022