chore: Drop Python 3.9 support

Author: effigies

.github/workflows/tox.yml

@@ -94,17 +94,17 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
         dependencies: [latest, pre]
         include:
-          - python-version: "3.9"
+          - python-version: "3.10"
             dependencies: min
         exclude:
           # Do not test pre-releases for versions out of SPEC0
-          - python-version: "3.9"
-            dependencies: pre
           - python-version: "3.10"
             dependencies: pre
+          - python-version: "3.11"
+            dependencies: pre
 
     env:
       DEPENDS: ${{ matrix.dependencies }}

pyproject.toml

@@ -9,14 +9,13 @@ description = "NeuroImaging Workflows provides processing tools for magnetic res
 readme = "README.rst"
 license = "Apache-2.0"
 license-files = ["LICENSE"]
-requires-python = ">= 3.9"
+requires-python = ">= 3.10"
 authors = [
     { name = "The NiPreps Developers", email = "[email protected]" },
 ]
 classifiers = [
     "Development Status :: 4 - Beta",
     "Intended Audience :: Science/Research",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
@@ -226,3 +225,45 @@ source = [
 [tool.codespell]
 skip = "*/data/*,*/docs/_build/*,./examples/viz-report.*"
 ignore-words-list = "objekt,nd"
+
+[tool.pixi.workspace]
+channels = ["https://fsl.fmrib.ox.ac.uk/fsldownloads/fslconda/public", "conda-forge"]
+platforms = ["linux-64"]
+
+[tool.pixi.feature.niworkflows.activation.env]
+FSLDIR = "$CONDA_PREFIX"
+
+[tool.pixi.pypi-dependencies]
+niworkflows = { path = ".", editable = true }
+
+[tool.pixi.environments]
+default = { features = ["editable"], solve-group = "default" }
+test = { features = ["editable", "tests"], solve-group = "default" }
+niworkflows = { features = ["production"], solve-group = "production" }
+
+[tool.pixi.feature.editable.pypi-dependencies]
+niworkflows = { path = ".", editable = true }
+[tool.pixi.feature.production.pypi-dependencies]
+niworkflows = { path = ".", editable = false }
+
+[tool.pixi.tasks]
+
+[tool.pixi.dependencies]
+python = "3.12.*"
+mkl = "2024.2.2.*"
+mkl-service = "2.4.2.*"
+numpy = "1.26.*"
+scipy = "1.15.*"
+matplotlib = "3.9.*"
+pandas = "2.2.*"
+h5py = "3.13.*"
+scikit-image = "0.25.*"
+scikit-learn = "1.6.*"
+graphviz = "11.0.*"
+ants = "2.5.*"
+libitk = "5.4.0.*"
+fsl-bet2 = "2111.8.*"
+fsl-flirt = "2111.2.*"
+fsl-fast4 = "2111.3.*"
+fsl-mcflirt = "2111.0.*"
+fsl-miscmaths = "2203.2.*"

tox.ini

@@ -2,19 +2,18 @@
 requires =
   tox>=4
 envlist =
-  py3{9,10,11,12,13}-latest
-  py39-min
-  py3{10,11,12,13}-pre
+  py3{10,11,12,13,14}-{latest,pre}
+  py310-min
 skip_missing_interpreters = true
 
 # Configuration that allows us to split tests across GitHub runners effectively
 [gh-actions]
 python =
-  3.9: py39
   3.10: py310
   3.11: py311
   3.12: py312
   3.13: py313
+  3.14: py314
 
 [gh-actions:env]
 DEPENDS =
@@ -54,8 +53,6 @@ pass_env =
   CLICOLOR
   CLICOLOR_FORCE
   PYTHON_GIL
-deps =
-  py313: traits @ git+https://github.com/enthought/traits.git@10954eb
 extras = tests
 setenv =
   pre: PIP_EXTRA_INDEX_URL=https://pypi.anaconda.org/scientific-python-nightly-wheels/simple