wsl_rustup

Behaviour:
`rustup doc` doesn't do anything, `BROWSER=wslview rustup doc` neither.

`rustup doc --std --path` echoes the std doc path, as expected.
`wslview $(rustup doc --std --path)

1. https://github.com/rust-lang/rustup/issues/2206
1. https://github.com/rust-lang/rustup/pull/2792#issue-668990820
1. https://github.com/Seeker14491/opener/issues/4#issuecomment-867285744

Either it will be resolved in the next rustup release, or I need to revisit.

Okay, so after giving this some more thought, this might be connected to the way paths in the linux distro under WSL2 differ from paths that Win10 can see.
Maybe using a more recent version of wslview helps?

wslview $(rustup doc --std --path) now shows rust docs, very good :)

So the resolution to my problem was the following:

$ sudo add-apt-repository ppa:wslutilities/wslu
$ sudo apt update && sudo apt upgrade
$ wslview -r

No need to manually set the BROWSER env var anymore. Nice :)