Apply Repo-Review rule PP006

The dev dependency group should be defined

Author: DimitriPapadopoulos

pyproject.toml

@@ -52,7 +52,7 @@ Paper = "https://doi.org/10.1038/s41592-018-0235-4"
 "Docker Images" = "https://hub.docker.com/r/nipreps/fmriprep/tags/"
 NiPreps = "https://www.nipreps.org/"
 
-[project.optional-dependencies]
+[dependency-groups]
 doc = [
     "pydot >= 1.2.3",
     "sphinx >= 5",
@@ -204,6 +204,10 @@ env = "PYTHONHASHSEED=0"
 filterwarnings = ["ignore::DeprecationWarning"]
 junit_family = "xunit2"
 
+[tool.tox.env.testing]
+dependency_groups = ["test"]
+commands = ["pytest"]
+
 [tool.ruff]
 line-length = 99
 

tox.ini

@@ -38,7 +38,6 @@ pass_env =
   CLICOLOR
   CLICOLOR_FORCE
   PYTHON_GIL
-extras = test
 setenv =
   pre: PIP_EXTRA_INDEX_URL=https://pypi.anaconda.org/scientific-python-nightly-wheels/simple
   pre: UV_INDEX=https://pypi.anaconda.org/scientific-python-nightly-wheels/simple