Deno: Cannot be installed with Homebrew on Linux

[davidbailey00]

According to the Deno website, Deno can be installed using Homebrew on Linux:

However, when attempting to install on Linux, the following error appears:

$ brew install deno
deno: macOS is required.
Error: An unsatisfied requirement failed this build.

See also https://github.com/denoland/deno/issues/1486#issuecomment-606393413

[ry]

We don't maintain the Homebrew distribution. Maybe @chrmoritz can speak to this?

[hayd]

@chrmoritz on related issue in deno_install:

This is unfortunately related to the fact that v8 (in rust_v8, a dependency of deno) still requires Python 2 to build. After the python@2 removal (from earlier this year), there is just no reliable way for Linuxbrew anymore to ensure that the python@2 build dependency is fulfilled, because not all Linux distribution are still shipping with a Python 2 version installed by default (unlike all current versions of macOS, but I'm not sure if this will still be the case after this fall).

In conclusion, we can't offer Linux support for installing deno with Homebrew anymore, until the Python 2 => 3 situation is sorted out and the Linux part should probably be removed from the docs until then.

But pypy2 might be the workaround...

[chrmoritz]

Exactly, it's related to the Python 2 EOL and the fact that Chromium/build unfortunately still only works with Python 2. Building anything which requires Python 2 on Homebrew (for Linux) is just no longer supported at all (it still works on macOS if the ancient system python 2 is working with it, but apple could decide to drop that anytime too).

I've now moved my experiment with pypy2 in it's own tap: https://github.com/chrmoritz/homebrew-deno/blob/master/Formula/deno.rb.

You could try it out with brew install chrmoritz/deno/deno (it also includes a Github Actions built bottle for 0.40.0).