diff --git a/pkgs/applications/version-management/gitless/default.nix b/pkgs/applications/version-management/gitless/default.nix
index ed8cd551fca..a7218347258 100644
--- a/pkgs/applications/version-management/gitless/default.nix
+++ b/pkgs/applications/version-management/gitless/default.nix
@@ -1,27 +1,42 @@
-{ fetchFromGitHub, python, lib }:
+{ lib
+, fetchFromGitHub
+, python3
+}:
 
-with python.pkgs;
-buildPythonApplication rec {
+python3.pkgs.buildPythonApplication rec {
   pname = "gitless";
   version = "0.8.8";
+  format = "setuptools";
 
   src = fetchFromGitHub {
     owner = "gitless-vcs";
-    repo = "gitless";
+    repo = pname;
     rev = "v${version}";
-    sha256 = "sha256-xo5EWtP2aN8YzP8ro3bnxZwUGUp0PHD0g8hk+Y+gExE=";
+    hash = "sha256-xo5EWtP2aN8YzP8ro3bnxZwUGUp0PHD0g8hk+Y+gExE=";
   };
 
-  propagatedBuildInputs = with pythonPackages; [ sh pygit2 clint ];
+  propagatedBuildInputs = with python3.pkgs; [
+    sh
+    pygit2
+    clint
+  ];
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "pygit2==0.28.2" "pygit2>=0.28.2"
+  '';
 
   doCheck = false;
 
+  pythonImportsCheck = [
+    "gitless"
+  ];
+
   meta = with lib; {
+    description = "Version control system built on top of Git";
     homepage = "https://gitless.com/";
-    description = "A version control system built on top of Git";
-    license = licenses.gpl2;
+    license = licenses.mit;
+    maintainers = with maintainers; [ cransom ];
     platforms = platforms.all;
-    maintainers = [ maintainers.cransom ];
   };
 }
-
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index de442328506..79ab433991b 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1781,7 +1781,7 @@ with pkgs;
 
   github-to-sqlite = with python3Packages; toPythonApplication github-to-sqlite;
 
-  gitless = callPackage ../applications/version-management/gitless { python = python3; };
+  gitless = callPackage ../applications/version-management/gitless { };
 
   gistyc = with python3Packages; toPythonApplication gistyc;