Disable tests of llvm backend for musl32 (seems broken)

Author: hamishmack

ci.nix

@@ -97,7 +97,10 @@
   } // lib.optionalAttrs (system == "x86_64-linux" && nixpkgsName == "unstable" && !builtins.elem compiler-nix-name ["ghc902" "ghc928" "ghc948"]) {
     # Musl cross only works on linux
     # aarch64 cross only works on linux
-    inherit (lib.systems.examples) musl32 musl64 aarch64-multiplatform;
+    inherit (lib.systems.examples) musl64 aarch64-multiplatform;
+  } // lib.optionalAttrs (__match ".*llvm" compiler-nix-name == null && system == "x86_64-linux" && nixpkgsName == "unstable" && !builtins.elem compiler-nix-name ["ghc902" "ghc928" "ghc948"]) {
+    # Out llvm versions of GHC seem to break for musl32
+    inherit (lib.systems.examples) musl32;
   } // lib.optionalAttrs (system == "x86_64-linux" && nixpkgsName == "R2411" && !builtins.elem compiler-nix-name ["ghc902" "ghc928" "ghc948"]) {
     inherit (lib.systems.examples) aarch64-android-prebuilt armv7a-android-prebuilt;
   } // lib.optionalAttrs (system == "x86_64-linux" && nixpkgsName == "unstable" && !builtins.elem compiler-nix-name ["ghc8107" "ghc902"]) {