symlink() NotImplementedError rabl

问题

Adding to gemfile failed and hence I tried gem install rabl. It fails with the following error message, looks like its OS specific... I'm on Windows 7 and using Ruby 2.2 on Rails 5 api

G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/package.rb:388:in `symlink': symlink() function is unimplemented on this machine (NotImplementedError)
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/package.rb:388:in `block (2 levels) in extract_tar_gz'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/package/tar_reader.rb:65:in `each'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/package.rb:365:in `block in extract_tar_gz'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/package.rb:459:in `block in open_tar_gz'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/package.rb:456:in `wrap'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/package.rb:456:in `open_tar_gz'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/package.rb:364:in `extract_tar_gz'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/package.rb:345:in `block (2 levels) in extract_files'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/package/tar_reader.rb:65:in `each'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/package.rb:342:in `block in extract_files'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/package/file_source.rb:30:in `open'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/package/file_source.rb:30:in `with_read_io'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/package.rb:339:in `extract_files'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/installer.rb:772:in `extract_files'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/installer.rb:302:in `install'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/resolver/specification.rb:97:in `install'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/request_set.rb:166:in `block in install'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/request_set.rb:156:in `each'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/request_set.rb:156:in `install'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/commands/install_command.rb:205:in `install_gem'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/commands/install_command.rb:255:in `block in install_gems'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/commands/install_command.rb:251:in `each'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/commands/install_command.rb:251:in `install_gems'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/commands/install_command.rb:158:in `execute'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/command.rb:310:in `invoke_with_build_args'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/command_manager.rb:169:in `process_args'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/command_manager.rb:139:in `run'
        from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/gem_runner.rb:55:in `run'
        from G:/Ruby/ruby/bin/gem:21:in `<main>'

Edit: After lots of googling, found this here

Attempting to use the deploy resource on Windows fails with: symlink() function is unimplemented on this machine (NotImplementedError) This is because Ruby's underlying File.symlink() method does not support Windows.

In the short-term this should be mentioned in the docs. Longer term I think this could be fixed in the same way that the "link" directive works. This method may not work for soft links due to limitations with NTFS.

So, it is definitely Windows specific, but wondering why there's no other post or link explaining that its incompatible with Windows. Isn't this fixable in Windows?

回答1:

This is controversial, but some say symlinking has been implemented on Ruby 2.3. I would try installing it first.

来源：https://stackoverflow.com/questions/40770776/symlink-notimplementederror-rabl

标签

ruby

windows

rubygems

ruby-on-rails-5

rabl