chore(tox): Pass environment variables

tox.ini

@@ -27,6 +27,19 @@ labels = test
 pip_pre =
   pre: true
 pass_env =
+  # Freesurfer variables searched for
+  FREESURFER_HOME
+  SUBJECTS_DIR
+  FS_LICENSE
+  # CI variables
+  TEST_DATA_HOME
+  TEST_OUTPUT_DIR
+  TEST_WORK_DIR
+  FMRIPREP_REGRESSION_SOURCE
+  CACHED_WORK_DIRECTORY
+  # CircleCI-specific
+  CIRCLE_NPROCS
+  SAVE_CIRCLE_ARTIFACTS
   # getpass.getuser() sources for Windows:
   LOGNAME
   USER
@@ -42,6 +55,7 @@ pass_env =
 extras = tests
 setenv =
   pre: PIP_EXTRA_INDEX_URL=https://pypi.anaconda.org/scientific-python-nightly-wheels/simple
+  pre: UV_EXTRA_INDEX_URL=https://pypi.anaconda.org/scientific-python-nightly-wheels/simple
 uv_resolution =
   min: lowest-direct
 
@@ -91,7 +105,6 @@ set_env =
   # https://github.com/pypa/pip/issues/11684
   # https://github.com/pypa/pip/issues/12243
   strict: PYTHONWARNINGS=error,once:pkg_resources is deprecated as an API.:DeprecationWarning:pip._internal.metadata.importlib._envs,once:Unimplemented abstract methods {'locate_file'}:DeprecationWarning:pip._internal.metadata.importlib._dists
-commands_pre =
 commands =
   python -m build
   python -m twine check dist/*