Fix rustup automatic install

oxidize-rb / rb-sys

Easily build Ruby native extensions in Rust

https://oxidize-rb.github.io/rb-sys/

Apache License 2.0

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Fix rustup automatic install #331

Closed ianks closed 6 months ago

ianks commented 6 months ago

The issue was an incorrect test on RB_SYS_ENV... there's some other stuff I batched in here to make builds pass due to ruby-head changes that shouldn't break CI builds.

fixes #330