try to cross compile x86_64-apple from aarch64

default.nix

@@ -8,6 +8,8 @@ let
   system = systems.${target};
 
   buildPackages = import (fetchTarball "https://github.com/soywod/nixpkgs/archive/master.tar.gz") { };
+  inherit (buildPackages) stdenv binutils mktemp gnutar zip;
+
   pkgs = import (fetchTarball "https://github.com/soywod/nixpkgs/archive/master.tar.gz") {
     crossSystem = {
       isStatic = true;
@@ -50,17 +52,14 @@ let
     buildFeatures = lib.strings.splitString "," features;
   };
 
-  # HACK: work around https://github.com/NixOS/nixpkgs/issues/177129
-  # Though this is an issue between Clang and GCC,
-  # so it may not get fixed anytime soon...
-  empty-libgcc_eh = buildPackages.stdenv.mkDerivation {
+  # HACK: https://github.com/NixOS/nixpkgs/issues/177129
+  empty-libgcc_eh = stdenv.mkDerivation {
     pname = "empty-libgcc_eh";
     version = "0";
     dontUnpack = true;
     installPhase = ''
       mkdir -p "$out"/lib
-      ls "${buildPackages.binutils}"/bin/ -al
-      "${buildPackages.binutils}/bin/${buildPackages.binutils.targetPrefix}ar" r "$out"/lib/libgcc_eh.a
+      "${lib.getExe' binutils "ar"}" r "$out"/lib/libgcc_eh.a
     '';
   };
 
@@ -73,8 +72,8 @@ himalaya.overrideAttrs (drv: {
   propagatedBuildInputs = (drv.propagatedBuildInputs or [ ])
     ++ lib.optional hostPlatform.isWindows empty-libgcc_eh;
 
-  postInstall = drv.postInstall + lib.optionalString hostPlatform.isWindows ''
-    export WINEPREFIX="$(${lib.getExe' buildPackages.mktemp "mktemp"} -d)"
+  postInstall = (drv.postInstall or "") + lib.optionalString hostPlatform.isWindows ''
+    export WINEPREFIX="$(${lib.getExe' mktemp "mktemp"} -d)"
   '' + ''
     mkdir -p $out/bin/share/{applications,completions,man,services}
     cp assets/himalaya.desktop $out/bin/share/applications/
@@ -88,10 +87,10 @@ himalaya.overrideAttrs (drv: {
     ${himalayaExe} completion powershell > ./share/completions/himalaya.powershell
     ${himalayaExe} completion zsh > ./share/completions/himalaya.zsh
 
-    ${lib.getExe buildPackages.gnutar} -czf himalaya.tgz himalaya* share
+    ${lib.getExe gnutar} -czf himalaya.tgz himalaya* share
     mv himalaya.tgz ../
 
-    ${lib.getExe buildPackages.zip} -r himalaya.zip himalaya* share
+    ${lib.getExe zip} -r himalaya.zip himalaya* share
     mv himalaya.zip ../
   '';