Merge pull request #215408 from astro/rust-sysroot

pkgs/build-support/rust/build-rust-package/sysroot/default.nix

@@ -1,10 +1,10 @@
-{ stdenv, rust, rustPlatform, buildPackages }:
+{ lib, stdenv, rust, rustPlatform, buildPackages }:
 
 { shortTarget, originalCargoToml, target, RUSTFLAGS }:
 
 let
   cargoSrc = import ../../sysroot/src.nix {
-    inherit stdenv rustPlatform buildPackages originalCargoToml;
+    inherit lib stdenv rustPlatform buildPackages originalCargoToml;
   };
 in rustPlatform.buildRustPackage {
   inherit target RUSTFLAGS;
@@ -14,7 +14,7 @@ in rustPlatform.buildRustPackage {
 
   RUSTC_BOOTSTRAP = 1;
   __internal_dontAddSysroot = true;
-  cargoSha256 = "0y6dqfhsgk00y3fv5bnjzk0s7i30nwqc1rp0xlrk83hkh80x81mw";
+  cargoSha256 = "sha256-zgkwevitxsu1C4OgGTsqNSc0gDxaNXYK1WPbfER48d0=";
 
   doCheck = false;
 
@@ -29,4 +29,7 @@ in rustPlatform.buildRustPackage {
     host=${rust.toRustTarget stdenv.buildPlatform}
     cp -r $RUST_SYSROOT/lib/rustlib/$host $out
   '';
+
+  # allows support for cross-compilation
+  meta.platforms = lib.platforms.all;
 }

pkgs/build-support/rust/sysroot/Cargo.lock

@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "alloc"
 version = "0.0.0"
@@ -10,9 +12,9 @@ dependencies = [
 
 [[package]]
 name = "compiler_builtins"
-version = "0.1.52"
+version = "0.1.87"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6591c2442ee984e2b264638a8b5e7ae44fd47b32d28e3a08e2e9c3cdb0c2fb0"
+checksum = "f867ce54c09855ccd135ad4a50c777182a0c7af5ff20a8f537617bd648b10d50"
 dependencies = [
  "rustc-std-workspace-core",
 ]

pkgs/build-support/rust/sysroot/src.nix

@@ -19,7 +19,7 @@ stdenv.mkDerivation {
   + ''
     ${buildPackages.python3.withPackages (ps: with ps; [ toml ])}/bin/python3 ${./cargo.py}
     mkdir -p $out/src
-    touch $out/src/lib.rs
+    echo '#![no_std]' > $out/src/lib.rs
     cp Cargo.toml $out/Cargo.toml
     cp ${./Cargo.lock} $out/Cargo.lock
   '';