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"
+    ];
   };
 }