I dont wanna install rustup in /home/$USER/.cargo/, then I downloaded the tar.gz package and installed it into /usr, now the IntelliJ-Rust reports Can not attach stdlib sources automatically without rustup. So is there any solution about
stdlib will be installed in?rustup in the directory in where I wanna install?rustup with the existence of rust in /usr/local/bin?You may want to look into how the Arch Linux rustup package does this.
You need to set the RUSTUP_HOME variable to change where the .rustup folder goes.
The path you mentioned is for cargo though, I'm not sure if that can be changed, from memory there's a few problems doing so, believe there is an outstanding github issue on the matter.
https://rust-lang.github.io/rustup/environment-variables.html
You need to set both RUSTUP_HOME and CARGO_HOME. I've been doing this in Windows for awhile without issue (the default of installing things in the root of the Users directory is annoying in Windows).
I successfully installed as my wish on Ubuntu, but failed on macOS, do you have any ideas about it?
You will need to be a bit more specific about what "failed" before people can offer pointers for troubleshooting.
The fail means it was not installed in the location I specified.