Suggestion from code review

requirements-extra-aiostream.txt

@@ -0,0 +1,10 @@
+#
+# This file is autogenerated by pip-compile with Python 3.12
+# by the following command:
+#
+#    pip-compile --extra=aiostream --output-file=requirements-extra-aiostream.txt pyproject.toml
+#
+aiostream==0.6.2
+    # via seviper (pyproject.toml)
+typing-extensions==4.12.2
+    # via aiostream

tox.ini

@@ -14,7 +14,7 @@ commands = python -m pip install --upgrade pip
 # the tests environment is called by the Github action that runs the unit tests
 deps =
     -r requirements.txt
-    .[aiostream]
+    -r requirements-extra-aiostream.txt
     .[tests]
 setenv = PYTHONPATH = {toxinidir}/src
 commands = python -m pytest --basetemp={envtmpdir} {posargs}
@@ -78,9 +78,6 @@ deps =
     pre-commit
 commands =
     python -m pip install --upgrade pip
-    pip install --upgrade virtualenv
-    pip-compile --extra aiostream -o requirements-extra-aiostream.txt pyproject.toml
-    pip install -r requirements.txt
     pre-commit install
 
 [testenv:test_packaging]