revert and separate py39 yml

.github/workflows/ci.yml

@@ -36,7 +36,6 @@ jobs:
           - py312
           - py311
           - py310 
-          - py39
     steps:
       - name: Check out repo
         uses: actions/checkout@v4

.github/workflows/pytest-py39.yml

@@ -0,0 +1,35 @@
+name: pytest
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+jobs:
+  build:
+
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.9"]
+        os: [ubuntu-latest]
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install -e .
+        # dev dependencies, cannot be read with pip because they are in pixi
+        python -m pip install dask geopandas mapbox_earcut matplotlib-base netcdf4 numba_celltree pip pooch pre-commit pydata-sphinx-theme pymetis pyproj pytest pytest-cov ruff shapely scipy sphinx sphinx-gallery xarray zarr ipykernel twine build 
+    - name: Test with pytest
+      run: |
+        pytest

pyproject.toml

@@ -7,12 +7,12 @@ name = "xugrid"
 description = "Xarray extension for unstructured grids"
 readme = { file = "README.rst", content-type = "text/x-rst" }
 maintainers = [{ name = "Huite Bootsma", email = "[email protected]" }]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 dependencies = [
     'pandas',
     'numba',
     'numba_celltree',
-    'numpy<2.0.0',
+    'numpy',
     'pooch',
     'scipy',
     'xarray',
@@ -25,7 +25,6 @@ classifiers = [
     'Programming Language :: Python',
     'Operating System :: OS Independent',
     'Programming Language :: Python :: 3',
-    'Programming Language :: Python :: 3.9',
     'Programming Language :: Python :: 3.10',
     'Programming Language :: Python :: 3.11',
     'Programming Language :: Python :: 3.12',
@@ -120,12 +119,8 @@ python = "3.11.*"
 [tool.pixi.feature.py310.dependencies]
 python = "3.10.*"
 
-[tool.pixi.feature.py39.dependencies]
-python = "3.9.*"
-
 [tool.pixi.environments]
 default = { features = ["py312"], solve-group = "py312" }
 py312 = { features = ["py312"], solve-group = "py312" }
 py311 = ["py311"]
 py310 = ["py310"]
-py39 = ["py39"]