``setup.py#install_requires`` would be the gemspec file. Ideally We'd have requirements.txt and requirements.txt.lock which would correspond to Gemfile and Gem

``setup.py#install_requires`` would be the gemspec file. Ideally We'd have requirements.txt and requirements.txt.lock which would correspond to Gemfile and Gemfile.lock. However right now that doesn't really happen. So you're kind of stuck having requirements.txt play a double duty where for things where you need exact exact dependencies you'd check in a very exact requirements.txt and things where you have a supported set of deps (maybe more restricted ranges) and you expect people to Deploy by cloning/unzipping a tarball etc you'd use a less restrictive requirements.txt. I would very much love to get a distinction between the two uses of requirements.txt so that we have a better correlation to Gemfile and Gemfile.lock