diff --git a/pkgs/applications/finance/odoo/default.nix b/pkgs/applications/finance/odoo/default.nix
index 66b1bb0f97fe..38719de371aa 100644
--- a/pkgs/applications/finance/odoo/default.nix
+++ b/pkgs/applications/finance/odoo/default.nix
@@ -2,19 +2,74 @@
 , lib
 , fetchurl
 , python3
-, python3Packages
 , nodePackages
 , wkhtmltopdf
-, callPackage
 }:
 
-with python3Packages;
-
 let
-  werkzeug = python3Packages.callPackage ../../../development/python-modules/werkzeug/1.nix {};
-in
-
-buildPythonApplication rec {
+  python = python3.override {
+    packageOverrides = self: super: {
+      click = super.click.overridePythonAttrs (old: rec {
+        version = "7.1.2";
+        src = old.src.override {
+          inherit version;
+          sha256 = "d2b5255c7c6349bc1bd1e59e08cd12acbbd63ce649f2588755783aa94dfb6b1a";
+        };
+      });
+      flask = super.flask.overridePythonAttrs (old: rec {
+        version = "1.1.4";
+        src = old.src.override {
+          inherit version;
+          sha256 = "0fbeb6180d383a9186d0d6ed954e0042ad9f18e0e8de088b2b419d526927d196";
+        };
+      });
+      itsdangerous = super.itsdangerous.overridePythonAttrs (old: rec {
+        version = "1.1.0";
+        src = old.src.override {
+          inherit version;
+          sha256 = "321b033d07f2a4136d3ec762eac9f16a10ccd60f53c0c91af90217ace7ba1f19";
+        };
+      });
+      jinja2 = super.jinja2.overridePythonAttrs (old: rec {
+        version = "2.11.3";
+        src = old.src.override {
+          inherit version;
+          sha256 = "a6d58433de0ae800347cab1fa3043cebbabe8baa9d29e668f1c768cb87a333c6";
+        };
+      });
+      markupsafe = super.markupsafe.overridePythonAttrs (old: rec {
+        version = "2.0.1";
+        src = old.src.override {
+          inherit version;
+          sha256 = "594c67807fb16238b30c44bdf74f36c02cdf22d1c8cda91ef8a0ed8dabf5620a";
+        };
+      });
+      werkzeug = super.werkzeug.overridePythonAttrs (old: rec {
+        version = "1.0.1";
+        src = old.src.override {
+          inherit version;
+          sha256 = "6c80b1e5ad3665290ea39320b91e1be1e0d5f60652b964a3070216de83d2e47c";
+        };
+        checkInputs = old.checkInputs ++ (with self; [
+          requests
+        ]);
+        disabledTests = old.disabledTests ++ [
+          # ResourceWarning: unclosed file
+          "test_basic"
+          "test_date_to_unix"
+          "test_easteregg"
+          "test_file_rfc2231_filename_continuations"
+          "test_find_terminator"
+          "test_save_to_pathlib_dst"
+        ];
+        disabledTestPaths = old.disabledTestPaths ++ [
+          # ResourceWarning: unclosed file
+          "tests/test_http.py"
+        ];
+      });
+    };
+  };
+in python.pkgs.buildPythonApplication rec {
   pname = "odoo";
 
   major = "15";
@@ -23,6 +78,8 @@ buildPythonApplication rec {
 
   version = "${major}.${minor}.${patch}";
 
+  format = "setuptools";
+
   # latest release is at https://github.com/odoo/docker/blob/master/15.0/Dockerfile
   src = fetchurl {
     url = "https://nightly.odoo.com/${major}.${minor}/nightly/src/odoo_${version}.tar.gz";
@@ -30,23 +87,12 @@ buildPythonApplication rec {
     hash = "sha256-mofV0mNCdyzJecp0XegZBR/5NzHjis9kbpsUA/KJbZg=";
   };
 
-  nativeBuildInputs = [
-    setuptools
-    wheel
-    mock
-  ];
-
-  buildInputs = [
-    wkhtmltopdf
-    nodePackages.rtlcss
-  ];
-
   # needs some investigation
   doCheck = false;
 
   makeWrapperArgs = [ "--prefix" "PATH" ":" "${lib.makeBinPath [ wkhtmltopdf nodePackages.rtlcss ]}" ];
 
-  propagatedBuildInputs = [
+  propagatedBuildInputs = with python.pkgs; [
     Babel
     chardet
     decorator
diff --git a/pkgs/development/python-modules/werkzeug/1.nix b/pkgs/development/python-modules/werkzeug/1.nix
deleted file mode 100644
index ae7ce1f2b90a..000000000000
--- a/pkgs/development/python-modules/werkzeug/1.nix
+++ /dev/null
@@ -1,62 +0,0 @@
-{ lib, stdenv, buildPythonPackage, fetchPypi
-, itsdangerous, hypothesis
-, pytestCheckHook, requests
-, pytest-timeout
-, isPy3k
- }:
-
-buildPythonPackage rec {
-  pname = "Werkzeug";
-  version = "1.0.1";
-
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "6c80b1e5ad3665290ea39320b91e1be1e0d5f60652b964a3070216de83d2e47c";
-  };
-
-  propagatedBuildInputs = [ itsdangerous ];
-  checkInputs = [ pytestCheckHook requests hypothesis pytest-timeout ];
-
-  postPatch = ''
-    # ResourceWarning causes tests to fail
-    rm tests/test_routing.py
-  '';
-
-  disabledTests = [
-    "test_save_to_pathlib_dst"
-    "test_cookie_maxsize"
-    "test_cookie_samesite_attribute"
-    "test_cookie_samesite_invalid"
-    "test_range_parsing"
-    "test_content_range_parsing"
-    "test_http_date_lt_1000"
-    "test_best_match_works"
-    "test_date_to_unix"
-    "test_easteregg"
-
-    # Seems to be a problematic test-case:
-    #
-    # > warnings.warn(pytest.PytestUnraisableExceptionWarning(msg))
-    # E pytest.PytestUnraisableExceptionWarning: Exception ignored in: <_io.FileIO [closed]>
-    # E
-    # E Traceback (most recent call last):
-    # E   File "/nix/store/cwv8aj4vsqvimzljw5dxsxy663vjgibj-python3.9-Werkzeug-1.0.1/lib/python3.9/site-packages/werkzeug/formparser.py", line 318, in parse_multipart_headers
-    # E     return Headers(result)
-    # E ResourceWarning: unclosed file <_io.FileIO name=11 mode='rb+' closefd=True>
-    "test_basic_routing"
-    "test_merge_slashes_match"
-    "test_merge_slashes_build"
-    "TestMultiPart"
-    "TestHTTPUtility"
-  ] ++ lib.optionals stdenv.isDarwin [
-    "test_get_machine_id"
-  ];
-
-  meta = with lib; {
-    homepage = "https://palletsprojects.com/p/werkzeug/";
-    description = "A WSGI utility library for Python";
-    license = licenses.bsd3;
-    maintainers = [ ];
-  };
-}
-