diff --git a/pkgs/development/python-modules/colcon-mixin/default.nix b/pkgs/development/python-modules/colcon-mixin/default.nix
new file mode 100644
index 000000000000..b2821cda8e44
--- /dev/null
+++ b/pkgs/development/python-modules/colcon-mixin/default.nix
@@ -0,0 +1,52 @@
+{
+  lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+  colcon,
+  pytest-cov,
+  pytestCheckHook,
+  setuptools,
+  scspell,
+  writableTmpDirAsHomeHook,
+}:
+
+buildPythonPackage rec {
+  pname = "colcon-mixin";
+  version = "0.2.3";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "colcon";
+    repo = "colcon-mixin";
+    tag = version;
+    hash = "sha256-XQpRDBTtrFOOlCRXKVImUtwrwirO0ELWifUpfQuyrrY=";
+  };
+
+  build-system = [ setuptools ];
+
+  dependencies = [
+    colcon
+  ];
+
+  nativeCheckInputs = [
+    pytest-cov
+    pytestCheckHook
+    scspell
+    writableTmpDirAsHomeHook
+  ];
+
+  pythonImportsCheck = [
+    "colcon_mixin"
+  ];
+
+  disabledTestPaths = [
+    "test/test_flake8.py"
+  ];
+
+  meta = {
+    description = "Extension for colcon-core to provide mixin functionality";
+    homepage = "https://github.com/colcon/colcon-mixin";
+    license = lib.licenses.asl20;
+    maintainers = with lib.maintainers; [ guelakais ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 144581c5e046..3bc7ccbfba0b 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2685,6 +2685,8 @@ self: super: with self; {
 
   colcon-defaults = callPackage ../development/python-modules/colcon-defaults { };
 
+  colcon-mixin = callPackage ../development/python-modules/colcon-mixin { };
+
   colcon-notification = callPackage ../development/python-modules/colcon-notification { };
 
   collections-extended = callPackage ../development/python-modules/collections-extended { };