Regarding RUST_SRC_PATH

[oppiliappan]

# FIXME: Is this correct? Should it use rust-overlay instead?
RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}";

This would work in most cases, but ideally, the rust-src component is on par with the active rustc toolchain (that is how rustup does it).

I source the rust-src component from mozillapkgs and export RUST_SRC_PATH like so (I think oxalica/rust-overlay also exposes the same rust-src component through rust-bin.<channel>.latest.rust-src):

RUST_SRC_PATH = "${rust-src}/lib/rustlib/src/rust/library";

RUST_SRC_PATH should contain the following:

alloc/        panic_unwind/       rustc-std-workspace-alloc/  stdarch/
backtrace/    proc_macro/         rustc-std-workspace-core/   term/
core/         profiler_builtins/  rustc-std-workspace-std/    test/
panic_abort/  rtstartup/          std/                        unwind/

There has been some discussion about providing rust-src from the nix store and rust-analyzer (rust-analyzer tries to write a Cargo.lock to the nix store and fails) but I have had no trouble with this.

I use this in my rust + nix flake setup (which has been modified heavily based on your template, thanks for that).

[srid]

Thanks for the info! Done in 0de7a6e