diff --git a/pkgs/development/python-modules/tomli/default.nix b/pkgs/development/python-modules/tomli/default.nix
index c658339dcd9c..79cd5a4f500c 100644
--- a/pkgs/development/python-modules/tomli/default.nix
+++ b/pkgs/development/python-modules/tomli/default.nix
@@ -1,9 +1,8 @@
 { lib
 , buildPythonPackage
+, callPackage
 , fetchFromGitHub
 , flit-core
-, pytestCheckHook
-, python-dateutil
 }:
 
 buildPythonPackage rec {
@@ -11,6 +10,11 @@ buildPythonPackage rec {
   version = "1.1.0";
   format = "pyproject";
 
+  outputs = [
+    "out"
+    "testsout"
+  ];
+
   src = fetchFromGitHub {
     owner = "hukkin";
     repo = pname;
@@ -20,17 +24,24 @@ buildPythonPackage rec {
 
   nativeBuildInputs = [ flit-core ];
 
-  checkInputs = [
-    pytestCheckHook
-    python-dateutil
-  ];
+  postInstall = ''
+    mkdir $testsout
+    cp -R benchmark/ pyproject.toml tests/ $testsout/
+  '';
 
   pythonImportsCheck = [ "tomli" ];
 
+  # check in passthru.tests.pytest to escape infinite recursion with setuptools-scm
+  doCheck = false;
+
+  passthru.tests = {
+    pytest = callPackage ./tests.nix { };
+  };
+
   meta = with lib; {
     description = "A Python library for parsing TOML, fully compatible with TOML v1.0.0";
     homepage = "https://github.com/hukkin/tomli";
     license = licenses.mit;
-    maintainers = with maintainers; [ veehaitch ];
+    maintainers = with maintainers; [ veehaitch SuperSandro2000 ];
   };
 }
diff --git a/pkgs/development/python-modules/tomli/tests.nix b/pkgs/development/python-modules/tomli/tests.nix
new file mode 100644
index 000000000000..5d3d67dbd128
--- /dev/null
+++ b/pkgs/development/python-modules/tomli/tests.nix
@@ -0,0 +1,21 @@
+{ buildPythonPackage
+, tomli
+, pytestCheckHook
+, python-dateutil
+}:
+
+buildPythonPackage rec {
+  pname = "tomli-tests";
+  inherit (tomli) version;
+
+  src = tomli.testsout;
+
+  dontBuild = true;
+  dontInstall = true;
+
+  checkInputs = [
+    pytestCheckHook
+    python-dateutil
+    tomli
+  ];
+}