diff --git a/.config/nix/lib/darwin/mkApp.nix b/.config/nix/lib/darwin/mkApp.nix
index 57f9f0a..220124d 100644
--- a/.config/nix/lib/darwin/mkApp.nix
+++ b/.config/nix/lib/darwin/mkApp.nix
@@ -1,5 +1,12 @@
 # REF: https://github.com/bandithedoge/nixpkgs-firefox-darwin/blob/ceaca2359e5371ccef3f92a36baf7c438b354afb/overlay.nix
-{ stdenv, undmg, pname, version, sourceRoot ? ".", appFileName, src, meta, nativeBuildInputs ? [ undmg ] }:
+{ stdenv, undmg, _7zz, pname, version, sourceRoot ? ".", appFileName, src, meta
+, nativeBuildInputs ? [ undmg _7zz ]
+, unpackPhase ? "undmg $src || 7zz x -snld $src"
+, installPhase ? ''
+    mkdir -p $out/Applications
+    cp -R ${appFileName} "$out/Applications/"
+''
+}:
 
 stdenv.mkDerivation rec {
   inherit pname version;
@@ -9,10 +16,7 @@ stdenv.mkDerivation rec {
   inherit sourceRoot;
 
   phases = [ "unpackPhase" "installPhase" ];
-  installPhase = ''
-    mkdir -p $out/Applications
-    cp -R ${appFileName} "$out/Applications/"
-  '';
+  inherit unpackPhase installPhase;
 
   inherit meta;
 }
diff --git a/.config/nix/overlays/darwin/heliport.nix b/.config/nix/overlays/darwin/heliport.nix
index 2e6feda..03fe5c0 100644
--- a/.config/nix/overlays/darwin/heliport.nix
+++ b/.config/nix/overlays/darwin/heliport.nix
@@ -6,7 +6,7 @@ let
   version = "1.5.0";
 in {
   heliport = mkApp {
-    inherit (final) stdenv undmg;
+    inherit (final) stdenv undmg _7zz;
 
     pname = "HeliPort";
     appFileName = "HeliPort.app";
diff --git a/.config/nix/overlays/darwin/vesktop.nix b/.config/nix/overlays/darwin/vesktop.nix
index 1939848..b026909 100644
--- a/.config/nix/overlays/darwin/vesktop.nix
+++ b/.config/nix/overlays/darwin/vesktop.nix
@@ -6,14 +6,12 @@ let
   version = "1.5.3";
 in {
   vesktop = mkApp {
-    inherit (final) stdenv undmg;
+    inherit (final) stdenv undmg _7zz;
 
     pname = "Vesktop";
     appFileName = "Vesktop*.app";
     inherit version;
 
-    nativeBuildInputs = [ final._7zz ];
-
     src = final.fetchurl {
       url = "https://github.com/Vencord/Vesktop/releases/download/v${version}/Vesktop-${version}-universal.dmg";
       hash = "sha256-ceOUNHSOaEqCbzkM64RtUu0Yhrq4tThcXZTDd+OsEXI";