Re: [PATCH v2 1/2] rust: package rust-analyzer for the SDK

["Paul Barker" <paul@pbarker.dev>]

On Tue Oct 6, 2026 at 12:12 PM BST, Benhur Tessele wrote:
> rust-analyzer is built alongside the other Rust tools (clippy, rustfmt)
> but was not installed or packaged. Install it for the nativesdk variant
> and add a rust-tools-analyzer package so it is available in the Rust SDK.
>
> Two additional pieces are required for the tool to be usable:
>
>  - The proc-macro server, rust-analyzer-proc-macro-srv, which
>    rust-analyzer looks up under <sysroot>/libexec. Install it into
>    ${libexecdir}; without it, analysis of any crate using a derive or
>    attribute macro fails with "cannot find proc-macro server in sysroot".
>
>  - The standard library sources, which rust-analyzer analyses from source
>    rather than from the compiled rlibs. Add an RDEPENDS on ${PN}-src-lib
>    so that core/std items resolve.
>
> Both binaries link against librustc_driver from the main package, so the
> package also RDEPENDS on ${PN}.
>
> rust-analyzer is deliberately not built for the target: it adds build
> time, is unlikely to be a use case on a target device, and fails to build
> on NEON arm32 tunes (beaglebone-alt, qemuarm-alt) because it pulls its own
> simd-adler32 that uses the unstable feature in 1.98
> "stdarch_arm_neon_intrinsics".
>
> Signed-off-by: Benhur Tessele <benhur.tessele@est.tech>
> ---
>  meta/recipes-devtools/rust/rust_1.98.1.bb | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/meta/recipes-devtools/rust/rust_1.98.1.bb b/meta/recipes-devtools/rust/rust_1.98.1.bb
> index 1f4ce5ebdb..f9d68ea986 100644
> --- a/meta/recipes-devtools/rust/rust_1.98.1.bb
> +++ b/meta/recipes-devtools/rust/rust_1.98.1.bb
> @@ -262,17 +262,21 @@ do_test_compile () {
>  ALLOW_EMPTY:${PN} = "1"
>  
>  PACKAGES =+ "${PN}-rustdoc ${PN}-tools-clippy ${PN}-tools-rustfmt ${PN}-src-lib"
> +PACKAGES:prepend:class-nativesdk = "${PN}-tools-analyzer "
>  FILES:${PN}-rustdoc = "${bindir}/rustdoc"
>  FILES:${PN}-tools-clippy = "${bindir}/cargo-clippy ${bindir}/clippy-driver"
>  FILES:${PN}-tools-rustfmt = "${bindir}/rustfmt"
> +FILES:${PN}-tools-analyzer = "${bindir}/rust-analyzer ${libexecdir}/rust-analyzer-proc-macro-srv"
>  FILES:${PN}-src-lib = "${libdir}/rustlib/src/rust"
>  
>  RDEPENDS:${PN}-rustdoc = "${PN}"
>  RDEPENDS:${PN}-tools-clippy = "${PN}"
>  RDEPENDS:${PN}-tools-rustfmt = "${PN}"
> +RDEPENDS:${PN}-tools-analyzer = "${PN} ${PN}-src-lib"
>  
>  SUMMARY:${PN}-tools-clippy = "A collection of lints to catch common mistakes and improve your Rust code"
>  SUMMARY:${PN}-tools-rustfmt = "A tool for formatting Rust code according to style guidelines"
> +SUMMARY:${PN}-tools-analyzer = "A language server providing IDE features for Rust"
>  
>  do_install () {
>      rust_do_install
> @@ -294,14 +298,19 @@ rust_do_install:class-nativesdk() {
>      rust_runx install
>      rust_runx install clippy
>      rust_runx install rustfmt
> +    rust_runx install rust-analyzer

Is it possible to use a PACKAGECONFIG to enable/disable this as
mentioned previously [1]?

[1]: https://lore.kernel.org/openembedded-core/279396b65a17a09d66e6f191bab1e1be7082d589.camel@pbarker.dev/

Best regards,

-- 
Paul Barker