rust-analyzer config not working with bootstrap

[Noratrieb]

I was talking to @jyn514 about what config to use to work on src/bootstrap and we couldn't figure out why it doesn't work for me.

We tried this config:

{
    "rust-analyzer.checkOnSave.overrideCommand": [
        "x",
        "check",
        "--json-output",
        "--build-dir",
        "build-rust-analyzer"
    ],
    "rust-analyzer.rustfmt.overrideCommand": [
        "./build/x86_64-unknown-linux-gnu/stage0/bin/rustfmt",
        "--edition=2021"
    ],
    "rust-analyzer.procMacro.server": "./build/x86_64-unknown-linux-gnu/stage0/libexec/rust-analyzer-proc-macro-srv",
    "rust-analyzer.procMacro.enable": true,
    "rust-analyzer.cargo.buildScripts.enable": true,
    "rust-analyzer.cargo.buildScripts.invocationLocation": "root",
    "rust-analyzer.cargo.buildScripts.invocationStrategy": "once",
    "rust-analyzer.cargo.buildScripts.overrideCommand": [
        "x",
        "check",
        "--json-output",
    ],
    "rust-analyzer.cargo.sysroot": "./build/x86_64-unknown-linux-gnu/stage0-sysroot",
    "rust-analyzer.rustc.source": "./Cargo.toml",
    "rust-analyzer.linkedProjects": ["Cargo.toml", "src/bootstrap/Cargo.toml"],
}

This config works for working on bootstrap but breaks when I work on the compiler:

[ERROR rust_analyzer::main_loop] flycheck 1: File with cargo diagnostic not found in VFS: file not found: /home/nilsh/projects/rust/src/bootstrap/compiler/rustc_builtin_macros/src/format.rs

[jyn514]

@Nilstrieb are you still running into this problem?

[Noratrieb]

I'm not! Magic! I will report back if it starts being a problem again.