Use Tramp remote path

[jkxyz]

Hi there

Thank you for the useful package!

I'm not sure how viable this code is in its current state, but I wanted to share a fix I made to get envrc working for my setup.

When enabling envrc-mode in remote buffers, it was overwriting PATH while ignoring the Tramp remote path. This was particularly evident in my setup because I'm using Windows. So opening an eshell at a Linux remote directory and running echo $PATH would print out Windows paths.

To alleviate this, I updated envrc--clear and envrc--apply to get the current PATH by using tramp-get-remote-path when the buffer is remote.

I was also able to workaround this by adding a line like

export PATH="foo:$PATH"

to .envrc, which would also then force it to load the correct variable since direnv observes that it's changed.

I'll be happy to make the necessary changes to get this fix merged!