scripts: generate_rust_analyzer: support passing env vars
A future commit adding `zerocopy` support will need to pass an environment
variable during its build.
Thus add support for an `--envs` parameter, similar to `--cfgs`, that
allows to pass a map of variables to set for a given crate.
This allows us to keep a single source of truth for those values.
No change intended in the generated `rust-project.json`.
Acked-by: Tamir Duberstein <tamird@kernel.org>
Link: https://patch.msgid.link/20260608141439.182634-2-ojeda@kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
projects / linux / commit