Robuta

https://ruby-doc.org/2.7.7/stdlibs/tsort/TSort/Cyclic.html

class TSort::Cyclic - tsort: Ruby Standard Library Documentation

standard library class tsort cyclic ruby

https://ruby-doc.org/3.1.3/stdlibs/bundler/Bundler/TSort/Cyclic.html

class Bundler::TSort::Cyclic - bundler: Ruby Standard Library Documentation

standard library class bundler tsort cyclic