diff --git a/pkgs/development/python-modules/flake8-length/default.nix b/pkgs/development/python-modules/flake8-length/default.nix
new file mode 100644
index 000000000000..7cb2f6b86c5d
--- /dev/null
+++ b/pkgs/development/python-modules/flake8-length/default.nix
@@ -0,0 +1,37 @@
+{ lib
+, buildPythonPackage
+, pythonOlder
+, flake8
+, pytestCheckHook
+, fetchPypi
+}:
+
+buildPythonPackage rec {
+  pname = "flake8-length";
+  version = "0.2.0";
+  disabled = pythonOlder "3.6";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "15frvccm1qx783jlx8fw811ks9jszln3agbb58lg4dhbmjaf2cxw";
+  };
+
+  propagatedBuildInputs = [
+    flake8
+  ];
+
+  pythonImportsCheck = [
+    "flake8_length"
+  ];
+
+  checkInputs = [ pytestCheckHook ];
+
+  pytestFlagsArray = [ "tests/" ];
+
+  meta = {
+    description = "Flake8 plugin for a smart line length validation";
+    homepage = "https://github.com/orsinium-labs/flake8-length";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ sauyon ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 3d77ef2598c6..0675fea9be10 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2719,6 +2719,8 @@ in {
 
   flake8 = callPackage ../development/python-modules/flake8 { };
 
+  flake8-length = callPackage ../development/python-modules/flake8-length { };
+
   flake8-debugger = callPackage ../development/python-modules/flake8-debugger { };
 
   flake8-future-import = callPackage ../development/python-modules/flake8-future-import { };