fenix seems to have removed some wasm32 libraries from latest

Author: blast-hardcheese

pkgs/modules/rust/default.nix

@@ -4,17 +4,20 @@ let
   rust-channel-name = if fenix-channel-name == "latest" then "nightly" else fenix-channel-name;
   channel = pkgs.fenix."${fenix-channel-name}";
 
-  stripped-toolchain = pkgs.fenix.combine [
+  stripped-toolchain = pkgs.fenix.combine ([
     (channel.withComponents [
       "cargo"
       "llvm-tools"
       "rust-src"
       "rust-std"
       "rustc"
     ])
-    pkgs.fenix.targets.wasm32-wasi.${fenix-channel-name}.rust-std
-    pkgs.fenix.targets.wasm32-unknown-unknown.${fenix-channel-name}.rust-std
-  ];
+  ] ++ (
+    if fenix-channel-name == "nightly" then [
+      pkgs.fenix.targets.wasm32-wasi.${fenix-channel-name}.rust-std
+      pkgs.fenix.targets.wasm32-unknown-unknown.${fenix-channel-name}.rust-std
+    ] else [ ]
+  ));
 
   toolchain = pkgs.fenix.combine [
     channel.toolchain