paperless-ngx: make python overrides injectable

pkgs/by-name/pa/paperless-ngx/package.nix

@@ -27,30 +27,36 @@
   symlinkJoin,
   nltk-data,
   lndir,
+  extraPythonPackageOverrides ? (_final: _prev: { }),
 }:
 let
   pnpm = pnpm_10;
 
-  python = python3.override {
-    self = python;
-    packageOverrides = final: prev: {
-      django = prev.django_5;
+  defaultPythonPackageOverrides = final: prev: {
+    django = prev.django_5;
 
-      fido2 = prev.fido2.overridePythonAttrs {
+    fido2 = prev.fido2.overridePythonAttrs {
+      version = "1.2.0";
+
+      src = fetchPypi {
+        pname = "fido2";
         version = "1.2.0";
-
-        src = fetchPypi {
-          pname = "fido2";
-          version = "1.2.0";
-          hash = "sha256-45+VkgEi1kKD/aXlWB2VogbnBPpChGv6RmL4aqDTMzs=";
-        };
-
-        pytestFlags = [ ];
+        hash = "sha256-45+VkgEi1kKD/aXlWB2VogbnBPpChGv6RmL4aqDTMzs=";
       };
 
-      # tesseract5 may be overwritten in the paperless module and we need to propagate that to make the closure reduction effective
-      ocrmypdf = prev.ocrmypdf_16.override { tesseract = tesseract5; };
+      pytestFlags = [ ];
     };
+
+    # tesseract5 may be overwritten in the paperless module and we need to propagate that to make the closure reduction effective
+    ocrmypdf = prev.ocrmypdf_16.override { tesseract = tesseract5; };
+  };
+
+  python = python3.override {
+    self = python;
+    packageOverrides = lib.composeManyExtensions [
+      defaultPythonPackageOverrides
+      extraPythonPackageOverrides
+    ];
   };
 
   path = lib.makeBinPath [