Cannot build Ruby on MacOS and Ubuntu - gem_original_require?

[joepio]

Thanks for all the hard work, guys!

So I've just installed rbenv, and this is what happens when I try to install a ruby version (2.7.x, 2.6.x):

rbenv install 2.7.0                                                                                                              
Downloading ruby-2.7.0.tar.bz2...
-> https://cache.ruby-lang.org/pub/ruby/2.7/ruby-2.7.0.tar.bz2
Installing ruby-2.7.0...
ruby-build: using readline from homebrew

BUILD FAILED (Mac OS X 10.15.5 using ruby-build 20200727)

Inspect or clean up the working tree at /var/folders/mg/d85x9ljn34361y6swsvhlj580000gn/T/ruby-build.20200817095015.75885.guOSjg
Results logged to /var/folders/mg/d85x9ljn34361y6swsvhlj580000gn/T/ruby-build.20200817095015.75885.log

Last 10 log lines:
        from /private/var/folders/mg/d85x9ljn34361y6swsvhlj580000gn/T/ruby-build.20200817095015.75885.guOSjg/ruby-2.7.0/lib/rubygems/core_ext/kernel_require.rb:92:in `require'
        from /private/var/folders/mg/d85x9ljn34361y6swsvhlj580000gn/T/ruby-build.20200817095015.75885.guOSjg/ruby-2.7.0/lib/rubygems/package.rb:44:in `<top (required)>'
        from /private/var/folders/mg/d85x9ljn34361y6swsvhlj580000gn/T/ruby-build.20200817095015.75885.guOSjg/ruby-2.7.0/lib/rubygems/core_ext/kernel_require.rb:92:in `require'
        from /private/var/folders/mg/d85x9ljn34361y6swsvhlj580000gn/T/ruby-build.20200817095015.75885.guOSjg/ruby-2.7.0/lib/rubygems/core_ext/kernel_require.rb:92:in `require'
        from /private/var/folders/mg/d85x9ljn34361y6swsvhlj580000gn/T/ruby-build.20200817095015.75885.guOSjg/ruby-2.7.0/lib/rubygems/installer.rb:11:in `<top (required)>'
        from /private/var/folders/mg/d85x9ljn34361y6swsvhlj580000gn/T/ruby-build.20200817095015.75885.guOSjg/ruby-2.7.0/lib/rubygems/core_ext/kernel_require.rb:92:in `require'
        from /private/var/folders/mg/d85x9ljn34361y6swsvhlj580000gn/T/ruby-build.20200817095015.75885.guOSjg/ruby-2.7.0/lib/rubygems/core_ext/kernel_require.rb:92:in `require'
        from ./tool/rbinstall.rb:708:in `<module:RbInstall>'
        from ./tool/rbinstall.rb:644:in `<main>'
make: *** [do-install-all] Error 1

Which comes from:

    if Gem::Specification.unresolved_deps.empty?
      RUBYGEMS_ACTIVATION_MONITOR.exit
      return gem_original_require(path)
    end

Which points to:

  # Make sure we have a reference to Ruby's original Kernel#require
  unless defined?(gem_original_require)
    alias gem_original_require require
    private :gem_original_require
  end

I've had RVM and various Ruby versions installed on this machine not too long ago - maybe that has something to do with the issues, but I've removed RVM and all references to that in my shell init.

In my config.fish file

# Ruby rbenv
export RUBY_CONFIGURE_OPTS="--with-openssl-dir=(brew)"
status --is-interactive; and source (rbenv init -|psub)

Here's the full log.

Thanks for your time :)