rust_1_66: Init via backport from master

Supporting the latest firefox versions via a source build every once in
a while requires a newer rust ecosystem.

pkgs/development/compilers/rust/1_66.nix

@@ -0,0 +1,64 @@
+# New rust versions should first go to staging.
+# Things to check after updating:
+# 1. Rustc should produce rust binaries on x86_64-linux, aarch64-linux and x86_64-darwin:
+#    i.e. nix-shell -p fd or @GrahamcOfBorg build fd on github
+#    This testing can be also done by other volunteers as part of the pull
+#    request review, in case platforms cannot be covered.
+# 2. The LLVM version used for building should match with rust upstream.
+#    Check the version number in the src/llvm-project git submodule in:
+#    https://github.com/rust-lang/rust/blob/<version-tag>/.gitmodules
+# 3. Firefox and Thunderbird should still build on x86_64-linux.
+
+{ stdenv, lib
+, buildPackages
+, newScope, callPackage
+, CoreFoundation, Security, SystemConfiguration
+, pkgsBuildTarget, pkgsBuildBuild, pkgsBuildHost
+, makeRustPlatform
+, llvmPackages_11
+, llvmPackages_14, llvm_14
+} @ args:
+
+import ./default.nix {
+  rustcVersion = "1.66.1";
+  rustcSha256 = "sha256-WzyTOpTHIYdwXU7ikxmLq/3QlEL1k3+9aF2zqB9JWbo=";
+
+  llvmSharedForBuild = pkgsBuildBuild.llvmPackages_14.libllvm.override { enableSharedLibraries = true; };
+  llvmSharedForHost = pkgsBuildHost.llvmPackages_14.libllvm.override { enableSharedLibraries = true; };
+  llvmSharedForTarget = pkgsBuildTarget.llvmPackages_14.libllvm.override { enableSharedLibraries = true; };
+
+  llvmBootstrapForDarwin = llvmPackages_11;
+
+  # For use at runtime
+  llvmShared = llvm_14.override { enableSharedLibraries = true; };
+
+  # Expose llvmPackages used for rustc from rustc via passthru for LTO in Firefox
+  llvmPackages = llvmPackages_14;
+
+  # Note: the version MUST be one version prior to the version we're
+  # building
+  bootstrapVersion = "1.65.0";
+
+  # fetch hashes by running `print-hashes.sh ${bootstrapVersion}`
+  bootstrapHashes = {
+    i686-unknown-linux-gnu = "b29869f8e2c7029150a929b2c4e26843f363846ad99253a25be6abcfa8e84f46";
+    x86_64-unknown-linux-gnu = "8f754fdd5af783fe9020978c64e414cb45f3ad0a6f44d045219bbf2210ca3cb9";
+    x86_64-unknown-linux-musl = "716984def5509a844c2dde1c7be42bfadeb179f751d5c1a30c9c7198c8c089cd";
+    arm-unknown-linux-gnueabihf = "e27f835c16bfcb66ad022a17d5c4602899e021e483a432ca4cc2cb4ecd39e938";
+    armv7-unknown-linux-gnueabihf = "5376d467a29b32cacb771e0c76dc280bd623852709e7ffd92caabab076d5475f";
+    aarch64-unknown-linux-gnu = "f406136010e6a1cdce3fb6573506f00d23858af49dd20a46723c3fa5257b7796";
+    aarch64-unknown-linux-musl = "4b701dc3cbac04ebf0e336cff2f4ce5fc1a1984c183226863c9ed911eb00b07e";
+    x86_64-apple-darwin = "139087a3937799415fd829e5a88162a69a32c23725a44457f9c96b98e4d64a7c";
+    aarch64-apple-darwin = "7ddc335bd10fc32d3039ef36248a5d0c4865db2437c8aad20a2428a6cf41df09";
+    powerpc64le-unknown-linux-gnu = "3f1d0d5bb13213348dc65e373f8c412fc0a12ee55abc1c864f7e0300932fc687";
+    riscv64gc-unknown-linux-gnu = "aac7067348d218faa452b4bdc735778a51570a310ad645313ec767b5d7c88492";
+    mips64el-unknown-linux-gnuabi64 = "d91ed3857c5256720da890f6533684b684e880bf9006dc4e4f4181213a5c4a09";
+  };
+
+  selectRustPackage = pkgs: pkgs.rust_1_66;
+
+  rustcPatches = [
+  ];
+}
+
+(builtins.removeAttrs args [ "fetchpatch" "pkgsBuildHost" "llvmPackages_11" "llvmPackages_14" "llvm_14"])

pkgs/development/compilers/rust/rustc.nix

@@ -52,7 +52,8 @@ in stdenv.mkDerivation rec {
        # when linking stage1 libstd: cc: undefined reference to `__cxa_begin_catch'
        optional (stdenv.isLinux && !withBundledLLVM) "--push-state --as-needed -lstdc++ --pop-state"
     ++ optional (stdenv.isDarwin && !withBundledLLVM) "-lc++"
-    ++ optional stdenv.isDarwin "-rpath ${llvmSharedForHost}/lib");
+    ++ optional stdenv.isDarwin "-rpath ${llvmSharedForHost}/lib"
+    ++ optional ((lib.versionAtLeast version "1.66") && stdenv.isLinux && stdenv.isAarch64 && stdenv.cc.isGNU) "-lgcc");
 
   # Increase codegen units to introduce parallelism within the compiler.
   RUSTFLAGS = "-Ccodegen-units=10";

pkgs/top-level/all-packages.nix

@@ -15013,6 +15013,12 @@ with pkgs;
     inherit (darwin.apple_sdk.frameworks) CoreFoundation Security SystemConfiguration;
     llvm_14 = llvmPackages_14.libllvm;
   };
+  rust_1_66 = callPackage ../development/compilers/rust/1_66.nix {
+    inherit (darwin.apple_sdk.frameworks) CoreFoundation Security SystemConfiguration;
+    llvm_14 = llvmPackages_14.libllvm;
+    # https://github.com/NixOS/nixpkgs/issues/201254
+    stdenv = if stdenv.isLinux && stdenv.isAarch64 && stdenv.cc.isGNU then gcc11Stdenv else stdenv;
+  };
   rust = rust_1_64;
 
   mrustc = callPackage ../development/compilers/mrustc { };
@@ -15023,6 +15029,7 @@ with pkgs;
   };
 
   rustPackages_1_64 = rust_1_64.packages.stable;
+  rustPackages_1_66 = rust_1_66.packages.stable;
   rustPackages = rustPackages_1_64;
 
   inherit (rustPackages) cargo clippy rustc rustPlatform;