rust 1.41: Fix build with no_std only target

See rust-lang/rust#69381

pkgs/development/compilers/rust/1_41_0.nix

@@ -6,6 +6,16 @@
 #    request review, in case platforms cannot be covered.
 # 2. The LLVM version used for building should match with rust upstream.
 # 3. Firefox and Thunderbird should still build on x86_64-linux.
+
+{ stdenv, lib
+, buildPackages
+, newScope, callPackage
+, CoreFoundation, Security
+, llvmPackages_5
+, pkgsBuildTarget, pkgsBuildBuild
+, fetchpatch
+} @ args:
+
 import ./default.nix {
   rustcVersion = "1.41.0";
   rustcSha256 = "0jypz2mrzac41sj0zh07yd1z36g2s2rvgsb8g624sk4l14n84ijm";
@@ -26,4 +36,13 @@ import ./default.nix {
   };
 
   selectRustPackage = pkgs: pkgs.rust_1_41_0;
+
+  rustcPatches = [
+    (fetchpatch {
+      url = "https://github.com/QuiltOS/rust/commit/f1803452b9e95bfdbc3b8763138b9f92c7d12b46.diff";
+      sha256 = "1mzxaj46bq7ll617wg0mqnbnwr1da3hd4pbap8bjwhs3kfqnr7kk";
+    })
+  ];
 }
+
+(builtins.removeAttrs args [ "fetchpatch" ])

pkgs/development/compilers/rust/default.nix

@@ -4,6 +4,7 @@
 , bootstrapVersion
 , bootstrapHashes
 , selectRustPackage
+, rustcPatches ? []
 }:
 { stdenv, lib
 , buildPackages
@@ -73,6 +74,8 @@
         sha256 = rustcSha256;
         inherit enableRustcDev;
 
+        patches = rustcPatches;
+
         # Use boot package set to break cycle
         rustPlatform = bootRustPlatform;
       } // lib.optionalAttrs (stdenv.cc.isClang && stdenv.hostPlatform == stdenv.buildPlatform) {

pkgs/development/compilers/rust/rustc.nix

@@ -7,6 +7,7 @@
 , enableRustcDev ? true
 , version
 , sha256
+, patches ? []
 }:
 
 let
@@ -104,6 +105,8 @@ in stdenv.mkDerivation rec {
   # the rust build system complains that nix alters the checksums
   dontFixLibtool = true;
 
+  inherit patches;
+
   postPatch = ''
     patchShebangs src/etc