python2Packages.pytest-testmon: disable python2

```
  Processing ./pytest_testmon-1.0.2-py2-none-any.whl
  ERROR: Package 'pytest-testmon' requires a different Python: 2.7.18 not in '>=3.6'
```

1 files changed, 2 insertions, 0 deletions

diff --git a/pkgs/development/python-modules/pytest-testmon/default.nix b/pkgs/development/python-modules/pytest-testmon/default.nix
index 3b649bea57d..9d9add16782 100644
--- a/pkgs/development/python-modules/pytest-testmon/default.nix
+++ b/pkgs/development/python-modules/pytest-testmon/default.nix
@@ -1,6 +1,7 @@
 { lib
 , buildPythonPackage
 , fetchPypi
+, pythonOlder
 , coverage
 , pytest
 }:
@@ -8,6 +9,7 @@
 buildPythonPackage rec {
   pname = "pytest-testmon";
   version = "1.0.2";
+  disabled = pythonOlder "3.6";
 
   src = fetchPypi {
     inherit pname version;