RustRover cannot found rustc-related dependency

[WeiTheShinobi]

some projects need to use rustc-related dependency (like rust-lang/clippy)
but RustRover cannot find them
I have two choices:

1. do nothing. can compile
2. add
   rustc_xxx = {path = ".../rust/complie/..."} at Cargo.toml
   can make RustRover find them
   but will lose the env variable
   cannot compile

So I want to ask:
Is there any ticky method I can use to make RustRover find dependencies and compile them successfully?

someone says add dependency at
[target.'cfg(NOT_A_PLATFORM)'.dependencies]
can work.
I tried and its not working

now my solution is using VSCode + rust-analyzer in this project. it worked well.

[fan-tom]

someone says add dependency at
[target.'cfg(NOT_A_PLATFORM)'.dependencies]
can work.

It used to work in now-deprecated idea plugin, but currently it doesn't work there either

[fan-tom]

My current approach is to

1. Declare rustc deps under [target.'cfg(unix)'.dependencies] (I'm on macos so this target section is taken into account when IDEA imports the project)
2. "Refresh Cargo Projects". Adter that IDEA resolves imports, but Cargo wouldn't build my project as it tries to build rustc crates also, which cannot succeed
3. Change target from unix to NOT_A_PLATFORM in [target.'cfg(unix)'.dependencies], and don't reimport the project. This way Cargo is be able to build AND IDEA is able to resolve imports

[camsteffen]

CC #6862 / https://youtrack.jetbrains.com/issue/RUST-6862/Detect-rustc-sources-in-toolchain-sysroot