diff --git a/overlays/default.nix b/overlays/default.nix
index 5a3176b..0bb80aa 100644
--- a/overlays/default.nix
+++ b/overlays/default.nix
@@ -1,4 +1,4 @@
-final: prev: {
+_final: prev: {
   backscrub = prev.pkgs.callPackage ../pkgs/backscrub {
     inherit (prev.pkgs)
       gcc
@@ -26,63 +26,4 @@ final: prev: {
   mapshot = prev.pkgs.callPackage ../pkgs/mapshot { };
 
   factorio = prev.factorio.override { versionsJson = ./factorio.json; };
-
-  python312 = prev.python312.override {
-    packageOverrides = _pyfinal: pyprev: {
-      pyscard = pyprev.pyscard.overrideAttrs (_old: {
-        version = "2.2.0";
-
-        src = final.fetchFromGitHub {
-          owner = "LudovicRousseau";
-          repo = "pyscard";
-          rev = "refs/tags/2.2.0";
-          hash = "sha256-yZeP4Tcxnwb2My+XOsMtj+H8mNIf6JYf5tpOVUYjev0=";
-        };
-
-        postPatch = ''
-                substituteInPlace pyproject.toml \
-                  --replace-fail 'requires = ["setuptools","swig"]' 'requires = ["setuptools"]'
-          substituteInPlace setup.py --replace-fail "pkg-config" "$PKG_CONFIG"
-                    substituteInPlace src/smartcard/scard/winscarddll.c \
-                      --replace-fail "libpcsclite.so.1" \
-                                "${final.lib.getLib final.pcsclite}/lib/libpcsclite${final.stdenv.hostPlatform.extensions.sharedLibrary}"
-        '';
-
-        preCheck = null;
-        disabledTests = [ ];
-
-      });
-    };
-  };
-  python312Packages = final.python312.pkgs;
-
-  python311 = prev.python311.override {
-    packageOverrides = _pyfinal: pyprev: {
-
-      pyscard = pyprev.pyscard.overrideAttrs (_old: {
-        version = "2.2.0";
-
-        src = final.fetchFromGitHub {
-          owner = "LudovicRousseau";
-          repo = "pyscard";
-          rev = "refs/tags/2.2.0";
-          hash = "sha256-yZeP4Tcxnwb2My+XOsMtj+H8mNIf6JYf5tpOVUYjev0=";
-        };
-
-        postPatch = ''
-                substituteInPlace pyproject.toml \
-                  --replace-fail 'requires = ["setuptools","swig"]' 'requires = ["setuptools"]'
-          substituteInPlace setup.py --replace-fail "pkg-config" "$PKG_CONFIG"
-                    substituteInPlace src/smartcard/scard/winscarddll.c \
-                      --replace-fail "libpcsclite.so.1" \
-                                "${final.lib.getLib final.pcsclite}/lib/libpcsclite${final.stdenv.hostPlatform.extensions.sharedLibrary}"
-        '';
-
-        preCheck = null;
-        disabledTests = [ ];
-
-      });
-    };
-  };
-  python311Packages = final.python311.pkgs;
 }