fix(nix/darwin): Create custom overlay for inkscape in macOS

The one fetched from brew-api is using arm64 by default.

REF: ceaca2359e/overlay.nix

.config/nix/lib/mkCommon.nix

@@ -8,7 +8,7 @@ let
       py.dnspython
     ]));
   };
-  custom.inkscape = if pkgs.stdenv.isDarwin then pkgs.brewCasks.inkscape else (pkgs.inkscape.override { python3 = custom.python; });
+  custom.inkscape = if pkgs.stdenv.isDarwin then pkgs.inkscape-bin else (pkgs.inkscape.override { python3 = custom.python; });
 in {
   inherit custom;
   packages = [

.config/nix/overlays/darwin/inkscape.nix

@@ -0,0 +1,45 @@
+# REF: https://github.com/bandithedoge/nixpkgs-firefox-darwin/blob/ceaca2359e5371ccef3f92a36baf7c438b354afb/overlay.nix
+final: prev:
+
+let
+  inkscapePackage = version:
+    final.stdenv.mkDerivation rec {
+        pname = "Inkscape";
+        inherit version;
+
+        buildInputs = [ final.pkgs.undmg ];
+        sourceRoot = ".";
+        phases = [ "unpackPhase" "installPhase" ];
+        installPhase = ''
+          runHook preInstall
+
+          mkdir -p $out/Applications
+          cp -r Inkscape*.app "$out/Applications/"
+
+          runHook postInstall
+        '';
+
+        src = final.fetchurl {
+          name = "Inkscape-${version}.dmg";
+          url = "https://media.inkscape.org/dl/resources/file/Inkscape-${version}_${if final.stdenv.isAarch64 then "arm64" else "x86_64"}.dmg";
+          sha256 = if final.stdenv.isAarch64 then "c2d89809ad8d85021e7784e72e28aee2231b0b8675ec3ede3e6fb9f1ffedb4b3" else "e3f968e131e5c3577ee21809da487eafe2a9b42370e2bf408e5811b6f965912e";
+        };
+
+      meta = with final.lib; {
+        description = "Vector graphics editor";
+        homepage = "https://www.inkscape.org";
+        license = licenses.gpl3Plus;
+        maintainers = [ maintainers.jtojnar ];
+        platforms = platforms.all;
+        mainProgram = "inkscape";
+        longDescription = ''
+          Inkscape is a feature-rich vector graphics editor that edits
+          files in the W3C SVG (Scalable Vector Graphics) file format.
+
+          If you want to import .eps files install ps2edit.
+        '';
+      };
+    };
+in {
+  inkscape-bin = inkscapePackage "1.4.028868";
+}

.config/nix/systems/darwin/default.nix

@@ -21,6 +21,7 @@ in
           extraOverlays = [
             inputs.firefox-darwin.overlay
             inputs.brew-nix.overlays.default
+            (import ../../overlays/darwin/inkscape.nix)
           ];
         }
       ) system pkgs pkgs-unstable;
@@ -45,6 +46,7 @@ in
           extraOverlays = [
             inputs.firefox-darwin.overlay
             inputs.brew-nix.overlays.default
+            (import ../../overlays/darwin/inkscape.nix)
           ];
         }
       ) system pkgs pkgs-unstable;