From 57e73d23bb6cc89a25293e5cfb26787438b4efba Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Mon, 24 Apr 2023 17:35:35 +0000
Subject: [PATCH] rustc,rustPlatform.buildRustPackage: broaden platforms

rustc supports way more platforms than Linux and Darwin.  We might not
be able to build it for every platform at the moment, but that's what
meta.broken is for.

There are other platforms that rustc can produce binaries for, but
can't run on itself, so those are listed in the defaults for
buildRustPackage.
---
 .../rust/build-rust-package/default.nix           | 11 ++++++++++-
 pkgs/development/compilers/rust/rustc.nix         | 15 ++++++++++++++-
 2 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/pkgs/build-support/rust/build-rust-package/default.nix b/pkgs/build-support/rust/build-rust-package/default.nix
index 2cd30af56b72..73a3f12b20c8 100644
--- a/pkgs/build-support/rust/build-rust-package/default.nix
+++ b/pkgs/build-support/rust/build-rust-package/default.nix
@@ -158,6 +158,15 @@ stdenv.mkDerivation ((removeAttrs args [ "depsExtraArgs" "cargoUpdateHook" "carg
 
   meta = {
     # default to Rust's platforms
-    platforms = rustc.meta.platforms;
+    platforms = rustc.meta.platforms ++ [
+      # Platforms without host tools from
+      # https://doc.rust-lang.org/nightly/rustc/platform-support.html
+      "armv7a-darwin"
+      "armv5tel-linux" "armv6l-linux" "armv7a-linux" "m68k-linux"
+      "riscv32-linux"
+      "armv6l-netbsd"
+      "x86_64-redox"
+      "wasm32-wasi"
+    ];
   } // meta;
 })
diff --git a/pkgs/development/compilers/rust/rustc.nix b/pkgs/development/compilers/rust/rustc.nix
index a1c618979934..75e8a451105c 100644
--- a/pkgs/development/compilers/rust/rustc.nix
+++ b/pkgs/development/compilers/rust/rustc.nix
@@ -232,6 +232,19 @@ in stdenv.mkDerivation rec {
     description = "A safe, concurrent, practical language";
     maintainers = with maintainers; [ cstrahan globin havvy ] ++ teams.rust.members;
     license = [ licenses.mit licenses.asl20 ];
-    platforms = platforms.linux ++ platforms.darwin;
+    platforms = [
+      # Platforms with host tools from
+      # https://doc.rust-lang.org/nightly/rustc/platform-support.html
+      "x86_64-darwin" "i686-darwin" "aarch64-darwin"
+      "i686-freebsd13" "x86_64-freebsd13"
+      "x86_64-solaris"
+      "aarch64-linux" "armv7l-linux" "i686-linux" "mipsel-linux"
+      "mips64el-linux" "powerpc64-linux" "powerpc64le-linux"
+      "riscv64-linux" "s390x-linux" "x86_64-linux"
+      "aarch64-netbsd" "armv7l-netbsd" "i686-netbsd" "powerpc-netbsd"
+      "x86_64-netbsd"
+      "i686-openbsd" "x86_64-openbsd"
+      "i686-windows" "x86_64-windows"
+    ];
   };
 }