Setting CARGO_TARGET_DIR

[StephenWakely]

Is there an easy way to set the CARGO_TARGET_DIR env var when running rust-analyzer?

I'd like to set it to something like /tmp/rust-analyzer so it doesn't lock the project directory for when I run cargo build..

[the-mikedavis]

I think this would be enabled by #4004

[StephenWakely]

Ah yes indeed it is. I've tested the branch from that PR and it does exactly what I need.

Many thanks.

[seanbone]

Sorry to "necro" this thread, but how does this work in practice? I have the following in my ~/.config/helix/languages.toml:

[language-server.rust-analyzer.environment]
CARGO_TARGET_DIR = "target-hx"

However it's still building in target.

[kirawi]

Are you using master or 23.05? That config only works on master.

[seanbone]

Ah, I didn't realize that. I'm on 23.03 from the PPA. I'll give building from source a go, thanks.

[kirawi]

23.03 would work. What I meant was that the config syntax you're using is only for master.