Use libiconvReal to fix darwin wasm GHC build

Author: hamishmack

compiler/ghc/default.nix

@@ -14,6 +14,7 @@ let self =
 , bash
 
 , libiconv ? null
+, libiconvReal ? null
 
 , ncurses # TODO remove this once the cross compilers all work without
 
@@ -261,10 +262,10 @@ let
     ;
 
   # Splicer will pull out correct variations
-  libDeps = platform: lib.optional (enableTerminfo && !targetPlatform.isGhcjs && !targetPlatform.isWasm && !targetPlatform.isAndroid) [ (lib.getLib targetPackages.ncurses) (lib.getDev targetPackages.ncurses) ]
+  libDeps = platform: lib.optionals (enableTerminfo && !targetPlatform.isGhcjs && !targetPlatform.isWasm && !targetPlatform.isAndroid) [ (lib.getLib targetPackages.ncurses) (lib.getDev targetPackages.ncurses) ]
     ++ lib.optional (!targetPlatform.isGhcjs) targetLibffi
     ++ lib.optional (!enableIntegerSimple && !targetPlatform.isGhcjs && !targetPlatform.isWasm) gmp
-    ++ lib.optional (platform.libc != "glibc" && !targetPlatform.isWindows) libiconv
+    ++ lib.optional (platform.libc != "glibc" && !targetPlatform.isWindows) libiconvReal
     ++ lib.optional (enableNUMA && platform.isLinux && !platform.isAarch32 && !platform.isAndroid) numactl
     ++ lib.optional enableDWARF (lib.getLib elfutils);