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The proto install <tool> (or proto i) command will download and install a tool by unpacking their archive to ~/.proto/tools/<tool>. If the tool has already been installed, the command will exit early.

The command is also smart enough to resolve partial versions, so 1, 1.2, and 1.2.3 are all acceptable. It even supports aliases when applicable, like latest, next, beta, etc. To install a canary release, use --canary.

$ proto install deno 1.31
$ proto install deno --canary

Some tools run post-install hooks that support arbitrary arguments that can be passed after --.

$ proto install go -- --no-gobin


  • <tool> - Type of tool.
  • [version] - Version of tool. Defaults to "latest".
  • [-- <args>] - Additional arguments to pass to post-install hooks.


  • --canary - Install a canary (next, nightly, etc) version.
  • --pin - Pin the resolved version and create a symlink in ~/.proto/bin. Accepts a boolean (pins globally), or the string "global", or the string "local".