Add iserv-syms.patch to just windows and musl

Author: hamishmack

overlays/bootstrap.nix

@@ -229,7 +229,11 @@ in {
 
                 # This one will lead to segv's on darwin, when calling `strlen` during lookupStrHashTable. `strlen` ends up being called with 0x0.
                 # This patch will allow adding additional symbols to iserv, instead of having to patch them into GHC all the time.
-                ++ fromUntil "9.6.1" "9.11" ./patches/ghc/iserv-syms.patch
+                ++ final.lib.optionals (
+                     final.stdenv.targetPlatform.isWindows || final.stdenv.targetPlatform.isMusl ||
+                     (  (final.stdenv.targetPlatform.isAndroid || final.stdenv.targetPlatform.isLinux)
+                     && (final.stdenv.targetPlatform.isAarch64 || final.stdenv.targetPlatform.is32bit)))
+                  (fromUntil "9.6.1" "9.11" ./patches/ghc/iserv-syms.patch)
                 ++ onAndroid (until "9.0" ./patches/ghc/ghc-8.10.7-weak-symbols-2.patch)
                 ++ onDarwin (onAarch64 (until "9.0" ./patches/ghc/ghc-8.10.7-rts-aarch64-darwin.patch))
                 ++ onAndroid (onAarch32 (until "9.2" ./patches/ghc/ghc-8.10-android.patch))