use a lockfile for "old" CI job

.github/workflows/spec_zero.yml

@@ -46,7 +46,12 @@ jobs:
           python-version: '3.12'
       - run: pip install packaging requests tomlkit
       - run: python tools/dev/spec_zero_update_versions.py
-      - run: |
+      - name: Create lockfile for old CI
+        # uv pip compile requires setting the python version explicitly in the command :(
+        # run: uv pip compile --python "3.10" --python-platform "x86_64-unknown-linux-gnu" --group test --resolution lowest-direct --format pylock.toml --output-file tools/pylock.old-ci.toml
+        run: uv export --format pylock.toml --group test --resolution lowest-direct --output-file tools/pylock.old-ci.toml
+      - name: check if files changed
+        run: |
           git diff && git status --porcelain
           if [[ $(git status --porcelain) ]]; then
             echo "dirty=true" >> $GITHUB_OUTPUT

.github/workflows/tests.yml

@@ -151,8 +151,10 @@ jobs:
           create-args: >-
             python=${{ env.PYTHON_VERSION }}
             -v
-        if: ${{ !startswith(matrix.kind, 'pip') }}
+        if: matrix.kind == 'conda' || matrix.kind == 'mamba'
         timeout-minutes: 20
+      - uses: astral-sh/setup-uv@v1
+        if: matrix.kind == 'old'
       - run: bash ./tools/github_actions_dependencies.sh
       # Minimal commands on Linux (macOS stalls)
       - run: bash ./tools/get_minimal_commands.sh

environment.yml

@@ -7,32 +7,32 @@ dependencies:
   - antio >=0.5.0
   - curryreader >=0.1.2
   - darkdetect
-  - decorator
+  - decorator >=3.5
   - defusedxml
-  - dipy
+  - dipy >=0.8
   - edfio >=0.4.10
   - eeglabio
   - filelock >=3.18.0
   - h5io >=0.2.4
-  - h5py
+  - h5py >=2.4
   - imageio >=2.6.1
   - imageio-ffmpeg >=0.4.1
   - ipyevents
   - ipympl
-  - ipython !=8.7.0
+  - ipython >=2.0,!=8.7.0
   - ipywidgets
-  - jinja2
-  - joblib
+  - jinja2 >=2.7
+  - joblib >=0.8
   - jupyter
   - lazy_loader >=0.3
   - mamba
   - matplotlib >=3.8
   - mffpy >=0.5.7
   - mne-qt-browser
-  - nibabel
+  - nibabel >=2.0
   - nilearn
   - nomkl
-  - numba
+  - numba >=0.35
   - numpy >=1.26,<3
   - openmeeg >=2.5.7
   - packaging
@@ -45,7 +45,7 @@ dependencies:
   - pymatreader
   - PySide6 !=6.9.1
   - python-neo
-  - python-picard
+  - python-picard >=0.4
   - pyvista >=0.43
   - pyvistaqt >=0.11
   - qdarkstyle !=3.2.2
@@ -54,7 +54,7 @@ dependencies:
   - scipy >=1.11
   - sip
   - snirf
-  - statsmodels
+  - statsmodels >=0.6
   - threadpoolctl
   - tqdm
   - traitlets

pyproject.toml

@@ -1,21 +1,21 @@
 [build-system]
 build-backend = "hatchling.build"
-requires = ["hatch-vcs", "hatchling"]
+requires = ["hatch-vcs", "hatchling >= 1.27"]
 
 [dependency-groups]
-dev = ["pip >= 25.1", "rcssmin", {include-group = "doc"}, {include-group = "test_extra"}]
+dev = ["pip >= 25.1", "rcssmin >= 1.1", {include-group = "doc"}, {include-group = "test_extra"}]
 # Dependencies for building the documentation
 doc = [
   "graphviz",
   "intersphinx_registry >= 0.2405.27",
   "ipython != 8.7.0",  # also in "full-no-qt" and "test"
-  "memory_profiler",
+  "memory_profiler >= 0.16",
   "mne-bids",
   "mne-connectivity",
   "mne-gui-addons",
   "neo",
-  "numpydoc",
-  "openneuro-py",
+  "numpydoc >= 0.5",
+  "openneuro-py >= 2020.1",
   "psutil",
   "pydata_sphinx_theme >= 0.15.2",
   "pygments >= 2.13",
@@ -24,7 +24,7 @@ doc = [
   "pyxdf",
   "pyzmq != 24.0.0",
   "scikit-learn",
-  "seaborn != 0.11.2",
+  "seaborn >= 0.5, != 0.11.2",
   "selenium >= 4.27.1",
   "sphinx >= 6",
   "sphinx-design",
@@ -37,20 +37,20 @@ doc = [
 test = [
   "codespell",
   "ipython != 8.7.0",  # for testing notebook backend; also in "full-no-qt" and "doc"
-  "mypy",
+  "mypy >= 0.14",
   "numpydoc",
   "pre-commit",
   "pytest >= 8.0",
   "pytest-cov",
-  "pytest-qt",
+  "pytest-qt >= 1.1",
   "pytest-rerunfailures",
   "pytest-timeout",
   "ruff",
   "toml-sort",
   "tomli; python_version<'3.11'",
   "twine",
   "vulture",
-  "wheel",
+  "wheel >= 0.21",
 ]
 # Dependencies for being able to run additional tests (rare/CIs/advanced devs)
 # Changes here should be reflected in the mne/utils/config.py dev dependencies section
@@ -64,7 +64,7 @@ test_extra = [
   "nbclient",
   "nbformat",
   "neo",
-  "nitime",
+  "nitime >= 0.7",
   "pybv",
   "snirf",
   "sphinx-gallery",
@@ -90,8 +90,8 @@ classifiers = [
   "Topic :: Software Development",
 ]
 dependencies = [
-  "decorator",
-  "jinja2",
+  "decorator >= 3.5",
+  "jinja2 >= 2.7",
   "lazy_loader >= 0.3",
   "matplotlib >= 3.8",  # released 2023-09-15, will become 3.9 on 2026-05-15
   "numpy >= 1.26, < 3",  # released 2023-09-16, will become 2.0 on 2026-06-16
@@ -117,6 +117,9 @@ maintainers = [{email = "dan@mccloy.info", name = "Dan McCloy"}]
 name = "mne"
 readme = {content-type = "text/x-rst", file = "README.rst"}
 requires-python = ">= 3.10"
+# ↑↑↑↑↑↑↑↑↑↑↑ when this changes, bump the `--python-version` in the `uv pip compile ...`
+# command in `.github/workflows/spec_zero.yaml` (astral-sh/uv/#16333), and also the
+# `--python` version in the `uv venv` command in `tools/github_actions_dependencies.sh`
 scripts = {mne = "mne.commands.utils:main"}
 
 [project.optional-dependencies]
@@ -133,42 +136,42 @@ full-no-qt = [
   "curryreader >= 0.1.2",
   "darkdetect",
   "defusedxml",
-  "dipy",
+  "dipy >= 0.8",
   "edfio >= 0.4.10",
   "eeglabio",
   "filelock >= 3.18.0",
-  "h5py",
+  "h5py >= 2.4",
   "imageio >= 2.6.1",
   "imageio-ffmpeg >= 0.4.1",
   "ipyevents",
   "ipympl",
-  "ipython != 8.7.0",  # for notebook backend; also in "doc" and "test"
+  "ipython >= 2.0, != 8.7.0",  # for notebook backend; also in "doc" and "test"
   "ipywidgets",
-  "joblib",
+  "joblib >= 0.8",
   "jupyter",
   "mffpy >= 0.5.7",
   "mne-qt-browser",
   "mne[hdf5]",
   "neo",
   "nest-asyncio2",
-  "nibabel",
+  "nibabel >= 2.0",
   "nilearn",
-  "numba",
+  "numba >= 0.35",
   "openmeeg >= 2.5.7",
   "pandas >= 2.1",  # released 2023-08-30, will become 2.2 on 2026-01-19
   "pillow",  # for `Brain.save_image` and `mne.Report`
   "pyarrow",  # only needed to avoid a deprecation warning in pandas
   "pybv",
   "pyobjc-framework-Cocoa >= 5.2.0; platform_system == 'Darwin'",
-  "python-picard",
+  "python-picard >= 0.4",
   "pyvista >= 0.43",  # released 2023-12-07, will become 0.44 on 2026-07-07
   "pyvistaqt >= 0.11",  # released 2023-06-30, no newer version available
   "qdarkstyle != 3.2.2",
   "qtpy",
   "scikit-learn >= 1.3",  # released 2023-06-30, will become 1.4 on 2026-01-17
   "sip",
   "snirf",
-  "statsmodels",
+  "statsmodels >= 0.6",
   "threadpoolctl",
   "traitlets",
   "trame",

tools/github_actions_dependencies.sh

@@ -27,6 +27,13 @@ if [ ! -z "$CONDA_ENV" ]; then
 		GROUP="test_extra"
 		EXTRAS="[hdf5]"
 	fi
+elif [[ ${MNE_CI_KIND} == "old" ]]; then
+	GROUP=""  # group "test" already included when pylock file generated
+	EXTRAS=""
+	STD_ARGS="--progress-bar off"
+	uv venv --python 3.10
+	uv pip sync ${SCRIPT_DIR}/pylock.ci-old.toml
+	source .venv/bin/activate
 elif [[ "${MNE_CI_KIND}" == "pip" ]]; then
 	GROUP="test_extra"
 	EXTRAS="[full-pyside6]"

tools/github_actions_env_vars.sh

@@ -13,14 +13,13 @@ if [[ "$MNE_CI_KIND" == "pip"* ]]; then
     else
         echo "MNE_QT_BACKEND=PySide6" | tee -a $GITHUB_ENV
     fi
+elif [[ "$MNE_CI_KIND" == "old" ]]; then
+    echo "MNE_IGNORE_WARNINGS_IN_TESTS=true" | tee -a $GITHUB_ENV
+    echo "MNE_SKIP_NETWORK_TESTS=1" | tee -a $GITHUB_ENV
+    echo "MNE_QT_BACKEND=PyQt5" | tee -a $GITHUB_ENV
 else  # conda-like
     echo "Setting conda env vars for $MNE_CI_KIND"
-    if [[ "$MNE_CI_KIND" == "old" ]]; then
-        echo "CONDA_ENV=tools/environment_old.yml" | tee -a $GITHUB_ENV
-        echo "MNE_IGNORE_WARNINGS_IN_TESTS=true" | tee -a $GITHUB_ENV
-        echo "MNE_SKIP_NETWORK_TESTS=1" | tee -a $GITHUB_ENV
-        echo "MNE_QT_BACKEND=PyQt5" | tee -a $GITHUB_ENV
-    elif [[ "$MNE_CI_KIND" == "minimal" ]]; then
+    if [[ "$MNE_CI_KIND" == "minimal" ]]; then
         echo "CONDA_ENV=tools/environment_minimal.yml" | tee -a $GITHUB_ENV
         echo "MNE_QT_BACKEND=PySide6" | tee -a $GITHUB_ENV
     else  # conda, mamba (use warning level for completeness)