Now that we have mkosi sandbox, let's add ruff, mypy and pytest to
the tools tree so that they can be used with mkosi sandbox.
--- /dev/null
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+[Build]
+ToolsTreePackages=
+ ruff
+ mypy
--- /dev/null
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+[Match]
+ToolsTreeDistribution=arch
+
+[Build]
+ToolsTreePackages=
+ python-pytest
--- /dev/null
+# SPDX-License-Identifier: LGPL-2.1-or-later
+
+[Match]
+ToolsTreeDistribution=!arch
+
+[Build]
+ToolsTreePackages=
+ python3-pytest