diff --git a/default.nix b/default.nix
index d053f00c25..6cdef63785 100644
--- a/default.nix
+++ b/default.nix
@@ -1,78 +1,2 @@
-{ lib
-, stdenv
-, fetchFromGitHub
-, autoreconfHook
-, pkg-config
-, util-linux
-, hexdump
-, autoSignDarwinBinariesHook ? null
-, wrapQtAppsHook ? null
-, boost
-, libevent
-, miniupnpc
-, zeromq
-, zlib
-, db48
-, sqlite
-, qrencode
-, qtbase ? null
-, qttools ? null
-, python3
-, withGui ? false
-, withWallet ? true
-}:
-
-stdenv.mkDerivation rec {
-  pname = if withGui then "sequentia" else "sequentiad";
-  version = "23.2.1";
-
-  src = ./.;
-
-  nativeBuildInputs =
-    [ autoreconfHook pkg-config ]
-    ++ lib.optionals stdenv.isLinux [ util-linux ]
-    ++ lib.optionals stdenv.isDarwin [ hexdump ]
-    ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [ autoSignDarwinBinariesHook ]
-    ++ lib.optionals withGui [ wrapQtAppsHook ];
-
-  buildInputs = [ boost libevent miniupnpc zeromq zlib ]
-    ++ lib.optionals withWallet [ db48 sqlite ]
-    ++ lib.optionals withGui [ qrencode qtbase qttools ];
-
-  configureFlags = [
-    "--with-boost-libdir=${boost.out}/lib"
-    "--disable-bench"
-  ] ++ lib.optionals (!doCheck) [
-    "--disable-tests"
-    "--disable-gui-tests"
-  ] ++ lib.optionals (!withWallet) [
-    "--disable-wallet"
-  ] ++ lib.optionals withGui [
-    "--with-gui=qt5"
-    "--with-qt-bindir=${qtbase.dev}/bin:${qttools.dev}/bin"
-  ];
-
-  # fix "Killed: 9  test/test_bitcoin"
-  # https://github.com/NixOS/nixpkgs/issues/179474
-  hardeningDisable = lib.optionals (stdenv.isAarch64 && stdenv.isDarwin) [ "fortify" "stackprotector" ];
-
-  nativeCheckInputs = [ python3 ];
-
-  doCheck = false;
-
-  checkFlags =
-    [ "LC_ALL=en_US.UTF-8" ]
-    # QT_PLUGIN_PATH needs to be set when executing QT, which is needed when testing Bitcoin's GUI.
-    # See also https://github.com/NixOS/nixpkgs/issues/24256
-    ++ lib.optional withGui "QT_PLUGIN_PATH=${qtbase}/${qtbase.qtPluginPrefix}";
-
-  enableParallelBuilding = true;
-
-  meta = with lib; {
-    description = "Sequentia is a Bitcoin sidechain dedicated to asset tokenization and decentralized exchanges";
-    homepage = "https://www.github.com/SequentiaSEQ/SEQ-Core-Elements";
-    maintainers = [];
-    license = licenses.mit;
-    platforms = platforms.unix;
-  };
-}
+let pkgs = import ./pkgs.nix; in
+pkgs.sequentia
diff --git a/pkgs.nix b/pkgs.nix
index 5a4ccc199c..c84ec520bc 100644
--- a/pkgs.nix
+++ b/pkgs.nix
@@ -6,5 +6,87 @@ let
     rev = "0deaf4d5d224fac3cb2ae9c92a4e349c277be982";
     sha256 = "sha256-uERpVxRrCUB7ySkGb3NtDmzEkPDn23VfkCtT2hJZty8=";
   };
-  pkgs = import nixpkgs-repo {};
-in pkgs
+  pkgs = import nixpkgs-repo { inherit config; };
+  config = {
+    packageOverrides = superPkgs: { inherit sequentia; } // superPkgs;
+  };
+  sequentia = pkgs.callPackage pkg {};
+  pkg = { lib
+, stdenv
+, fetchFromGitHub
+, autoreconfHook
+, pkg-config
+, util-linux
+, hexdump
+, autoSignDarwinBinariesHook ? null
+, wrapQtAppsHook ? null
+, boost
+, libevent
+, miniupnpc
+, zeromq
+, zlib
+, db48
+, sqlite
+, qrencode
+, qtbase ? null
+, qttools ? null
+, python3
+, withGui ? false
+, withWallet ? true
+}:
+
+stdenv.mkDerivation rec {
+  pname = if withGui then "sequentia" else "sequentiad";
+  version = "23.2.1";
+
+  src = ./.;
+
+  nativeBuildInputs =
+    [ autoreconfHook pkg-config ]
+    ++ lib.optionals stdenv.isLinux [ util-linux ]
+    ++ lib.optionals stdenv.isDarwin [ hexdump ]
+    ++ lib.optionals (stdenv.isDarwin && stdenv.isAarch64) [ autoSignDarwinBinariesHook ]
+    ++ lib.optionals withGui [ wrapQtAppsHook ];
+
+  buildInputs = [ boost libevent miniupnpc zeromq zlib ]
+    ++ lib.optionals withWallet [ db48 sqlite ]
+    ++ lib.optionals withGui [ qrencode qtbase qttools ];
+
+  configureFlags = [
+    "--with-boost-libdir=${boost.out}/lib"
+    "--disable-bench"
+  ] ++ lib.optionals (!doCheck) [
+    "--disable-tests"
+    "--disable-gui-tests"
+  ] ++ lib.optionals (!withWallet) [
+    "--disable-wallet"
+  ] ++ lib.optionals withGui [
+    "--with-gui=qt5"
+    "--with-qt-bindir=${qtbase.dev}/bin:${qttools.dev}/bin"
+  ];
+
+  # fix "Killed: 9  test/test_bitcoin"
+  # https://github.com/NixOS/nixpkgs/issues/179474
+  hardeningDisable = lib.optionals (stdenv.isAarch64 && stdenv.isDarwin) [ "fortify" "stackprotector" ];
+
+  nativeCheckInputs = [ python3 ];
+
+  doCheck = false;
+
+  checkFlags =
+    [ "LC_ALL=en_US.UTF-8" ]
+    # QT_PLUGIN_PATH needs to be set when executing QT, which is needed when testing Bitcoin's GUI.
+    # See also https://github.com/NixOS/nixpkgs/issues/24256
+    ++ lib.optional withGui "QT_PLUGIN_PATH=${qtbase}/${qtbase.qtPluginPrefix}";
+
+  enableParallelBuilding = true;
+
+  meta = with lib; {
+    description = "Sequentia is a Bitcoin sidechain dedicated to asset tokenization and decentralized exchanges";
+    homepage = "https://www.github.com/SequentiaSEQ/SEQ-Core-Elements";
+    maintainers = [];
+    license = licenses.mit;
+    platforms = platforms.unix;
+  };
+}; in
+pkgs
diff --git a/shell.nix b/shell.nix
index 2f4de5cd48..14a6ab8f43 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,8 +1,8 @@
-let 
+let
   pkgs = import ./pkgs.nix;
-  sequentia = pkgs.callPackage ./default.nix {};
+  sequentia = pkgs.sequentia;
 in pkgs.mkShell {
   inputsFrom = [
     sequentia
   ];
-} 
+}