diff --git a/pkgs/development/python-modules/finitude/default.nix b/pkgs/development/python-modules/finitude/default.nix
new file mode 100644
index 000000000000..eb4115914e10
--- /dev/null
+++ b/pkgs/development/python-modules/finitude/default.nix
@@ -0,0 +1,43 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, prometheus-client
+, pyserial
+, pythonOlder
+, pyyaml
+}:
+
+buildPythonPackage rec {
+  pname = "finitude";
+  version = "0.1.1";
+  format = "pyproject";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchFromGitHub {
+    owner = "dulitz";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-yCI5UCRDhw+dJoTKyjmHbAGBm3by2AyxHKlqCywnLcs=";
+  };
+
+  propagatedBuildInputs = [
+    pyserial
+    prometheus-client
+    pyyaml
+  ];
+
+  # Module has no tests
+  doCheck = false;
+
+  pythonImportsCheck = [
+    "finitude"
+  ];
+
+  meta = with lib; {
+    description = "Python module to get data from ABCD bus (RS-485) used by Carrier Infinity and Bryant Evolution HVAC systems";
+    homepage = "https://github.com/dulitz/finitude";
+    license = licenses.mit;
+    maintainers = with maintainers; [ fab ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 2b63aa22a495..be6f0b9540f5 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2747,6 +2747,8 @@ in {
 
   fingerprints = callPackage ../development/python-modules/fingerprints { };
 
+  finitude = callPackage ../development/python-modules/finitude { };
+
   fints = callPackage ../development/python-modules/fints { };
 
   fiona = callPackage ../development/python-modules/fiona {