diff --git a/pkgs/tools/backup/s3ql/default.nix b/pkgs/tools/backup/s3ql/default.nix
index e2e68109b801..6918528a1fae 100644
--- a/pkgs/tools/backup/s3ql/default.nix
+++ b/pkgs/tools/backup/s3ql/default.nix
@@ -1,36 +1,71 @@
-{ lib, fetchFromGitHub, python3Packages, sqlite, which }:
+{ lib
+, fetchFromGitHub
+, python3
+, sqlite
+, which
+}:
 
-python3Packages.buildPythonApplication rec {
+python3.pkgs.buildPythonApplication rec {
   pname = "s3ql";
   version = "4.0.0";
+  pyproject = true;
 
   src = fetchFromGitHub {
-    owner = pname;
-    repo = pname;
+    owner = "s3ql";
+    repo = "s3ql";
     rev = "refs/tags/release-${version}";
-    sha256 = "sha256-7N09b7JwMPliuyv2fEy1gQYaFCMSSvajOBPhNL3DQsg=";
+    hash = "sha256-7N09b7JwMPliuyv2fEy1gQYaFCMSSvajOBPhNL3DQsg=";
   };
 
-  nativeCheckInputs = [ which ] ++ (with python3Packages; [ cython pytest pytest-trio ]);
-  propagatedBuildInputs = with python3Packages; [
-    sqlite apsw pycrypto requests defusedxml dugong
-    google-auth google-auth-oauthlib trio pyfuse3
+  build-system = with python3.pkgs; [
+    setuptools
+  ];
+
+  nativeBuildInputs = [
+    which
+  ] ++ (with python3.pkgs; [
+    cython
+  ]);
+
+  propagatedBuildInputs = with python3.pkgs; [
+    apsw
+    cryptography
+    defusedxml
+    dugong
+    google-auth
+    google-auth-oauthlib
+    pyfuse3
+    requests
+    sqlite
+    trio
+  ];
+
+  nativeCheckInputs = with python3.pkgs; [
+    pytest-trio
+    pytestCheckHook
   ];
 
   preBuild = ''
-    ${python3Packages.python.pythonOnBuildForHost.interpreter} ./setup.py build_cython build_ext --inplace
+    ${python3.pkgs.python.pythonOnBuildForHost.interpreter} ./setup.py build_cython build_ext --inplace
   '';
 
-  checkPhase = ''
-    # Removing integration tests
-    rm tests/t{4,5,6}_*
-    pytest tests
+  preCheck = ''
+    export HOME=$(mktemp -d)
   '';
 
+  pythonImportsCheck = [
+    "s3ql"
+  ];
+
+  pytestFlagsArray = [
+    "tests/"
+  ];
+
   meta = with lib; {
     description = "A full-featured file system for online data storage";
     homepage = "https://github.com/s3ql/s3ql/";
-    license = licenses.gpl3;
+    changelog = "https://github.com/s3ql/s3ql/releases/tag/s3ql-${version}";
+    license = licenses.gpl3Only;
     maintainers = with maintainers; [ rushmorem ];
     platforms = platforms.linux;
   };