rustc: disable wasm32 if some gcc options are set

This is a temporary fix to get rustc building again with these
configurations (which notably include the default aarch64-darwin one)
without causing a stdenv rebuild.  The real fix will be to avoid
passing these options through the Clang wrapper when the target is
overridden.

It could be that there are packages that need wasm32-unknown-unknown
beyond those I've marked as broken here — it's impossible to be sure
without a full rebuild.  But this should be most of them.

1 files changed, 3 insertions, 0 deletions

diff --git a/pkgs/by-name/te/tetrio-desktop/tetrio-plus.nix b/pkgs/by-name/te/tetrio-desktop/tetrio-plus.nix
index 43102d6c8a26e..832123b61c157 100644
--- a/pkgs/by-name/te/tetrio-desktop/tetrio-plus.nix
+++ b/pkgs/by-name/te/tetrio-desktop/tetrio-plus.nix
@@ -78,6 +78,9 @@ let
       license = lib.licenses.mit;
       maintainers = with lib.maintainers; [ huantian wackbyte ];
       platforms = lib.platforms.linux;
+      # See comment about wasm32-unknown-unknown in rustc.nix.
+      broken = lib.any (a: lib.hasAttr a stdenv.hostPlatform.gcc) [ "cpu" "float-abi" "fpu" ] ||
+        !stdenv.hostPlatform.gcc.thumb or true;
     };
   };