Just learned RVM can automatically switch ruby versions based on the current directory.
No more trying to remember which magic
rvm use incantation will return your project to a working state.
The above will switch to the specified ruby version and gemset and drop two files in the directory:
.ruby-versionwill be a one-liner with the ruby version you want
.ruby-gemsetwill be a one-liner with the gemset you want to use
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