build: drop support for python 3.8 and 3.9 (#1792)

This PR only changes configuration files to drop support for old python
versions. Refactorings and code changes will follow in different PRs.

.github/workflows/_disabled/gt4py-sphinx.yml

@@ -22,7 +22,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v1
       with:
-        python-version: 3.8
+        python-version: 3.10
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip

.github/workflows/daily-ci.yml

@@ -15,7 +15,7 @@ jobs:
   daily-ci:
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.10", "3.11"]
         tox-module-factor: ["cartesian", "eve", "next", "storage"]
         os: ["ubuntu-latest"]
         requirements-file: ["requirements-dev.txt", "min-requirements-test.txt", "min-extra-requirements-test.txt"]

.github/workflows/test-cartesian-fallback.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.10", "3.11"]
         tox-factor: [internal, dace]
 
     steps:

.github/workflows/test-cartesian.yml

@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.10", "3.11"]
         tox-factor: [internal, dace]
     steps:
     - uses: actions/checkout@v4

.github/workflows/test-eve-fallback.yml

@@ -18,7 +18,7 @@ jobs:
   test-eve:
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.10", "3.11"]
         os: ["ubuntu-latest"]
 
     runs-on: ${{ matrix.os }}

.github/workflows/test-eve.yml

@@ -22,7 +22,7 @@ jobs:
   test-eve:
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.10", "3.11"]
         os: ["ubuntu-latest"]
       fail-fast: false
 

.github/workflows/test-storage-fallback.yml

@@ -19,7 +19,7 @@ jobs:
   test-storage:
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.10", "3.11"]
         tox-factor: [internal, dace]
         os: ["ubuntu-latest"]
 

.github/workflows/test-storage.yml

@@ -23,7 +23,7 @@ jobs:
   test-storage:
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.10", "3.11"]
         tox-factor: [internal, dace]
         os: ["ubuntu-latest"]
       fail-fast: false

.pre-commit-config.yaml

@@ -50,7 +50,7 @@ repos:
   ## version = re.search('ruff==([0-9\.]*)', open("constraints.txt").read())[1]
   ## print(f"rev: v{version}")
   ##]]]
-  rev: v0.8.2
+  rev: v0.8.6
   ##[[[end]]]
   hooks:
     # Run the linter.
@@ -72,9 +72,9 @@ repos:
   ## version = re.search('mypy==([0-9\.]*)', open("constraints.txt").read())[1]
   ## print(f"#========= FROM constraints.txt: v{version} =========")
   ##]]]
-  #========= FROM constraints.txt: v1.13.0 =========
+  #========= FROM constraints.txt: v1.14.1 =========
   ##[[[end]]]
-  rev: v1.13.0  # MUST match version ^^^^ in constraints.txt (if the mirror is up-to-date)
+  rev: v1.14.1  # MUST match version ^^^^ in constraints.txt (if the mirror is up-to-date)
   hooks:
   - id: mypy
     additional_dependencies:  # versions from constraints.txt
@@ -90,31 +90,29 @@ repos:
     ## for pkg in packages:
     ##     print(f"- {pkg}==" + str(re.search(f'\n{pkg}==([0-9\.]*)', constraints)[1]))
     ##]]]
-    - astunparse==1.6.3
-    - attrs==24.2.0
-    - black==24.8.0
+    - attrs==24.3.0
+    - black==24.10.0
     - boltons==24.1.0
     - cached-property==2.0.1
-    - click==8.1.7
-    - cmake==3.31.1
-    - cytoolz==1.0.0
-    - deepdiff==8.0.1
+    - click==8.1.8
+    - cmake==3.31.2
+    - cytoolz==1.0.1
+    - deepdiff==8.1.1
     - devtools==0.12.2
     - diskcache==5.6.3
     - factory-boy==3.3.1
     - filelock==3.16.1
     - frozendict==2.4.6
     - gridtools-cpp==2.3.8
-    - importlib-resources==6.4.5
-    - jinja2==3.1.4
+    - jinja2==3.1.5
     - lark==1.2.2
     - mako==1.3.8
     - nanobind==2.4.0
-    - ninja==1.11.1.2
-    - numpy==1.24.4
+    - ninja==1.11.1.3
+    - numpy==1.26.4
     - packaging==24.2
     - pybind11==2.13.6
-    - setuptools==75.3.0
+    - setuptools==75.8.0
     - tabulate==0.9.0
     - typing-extensions==4.12.2
     - xxhash==3.0.0

README.md

@@ -14,7 +14,7 @@
 
 GT4Py is a Python library for generating high performance implementations of stencil kernels from a high-level definition using regular Python functions. GT4Py is part of the GridTools framework, a set of libraries and utilities to develop performance portable applications in the area of weather and climate modeling.
 
-**NOTE:** The `gt4py.next` subpackage contains a new version of GT4Py which is not compatible with the current _stable_ version defined in `gt4py.cartesian`. The new version is highly experimental, it only works with unstructured meshes and it requires `python >= 3.10`.
+**NOTE:** The `gt4py.next` subpackage contains a new version of GT4Py which is not compatible with the current _stable_ version defined in `gt4py.cartesian`. The new version is still experimental.
 
 ## 📃 Description
 

ci/cscs-ci.yml

@@ -9,13 +9,6 @@ include:
   PYVERSION_PREFIX: py310
   PYVERSION: 3.10.9
 
-.py39: &py39
-  PYVERSION_PREFIX: py39
-  PYVERSION: 3.9.1
-
-.py38: &py38
-  PYVERSION_PREFIX: py38
-  PYVERSION: 3.8.5
 
 stages:
 - baseimage
@@ -78,20 +71,6 @@ build_py310_baseimage_aarch64:
   variables:
     <<: *py310
 
-build_py39_baseimage_x86_64:
-  extends: .build_baseimage_x86_64
-  variables:
-    <<: *py39
-build_py39_baseimage_aarch64:
-  extends: .build_baseimage_aarch64
-  variables:
-    <<: *py39
-
-build_py38_baseimage_x86_64:
-  extends: .build_baseimage_x86_64
-  variables:
-    <<: *py38
-
 
 .build_image:
   stage: image
@@ -128,23 +107,6 @@ build_py310_image_aarch64:
   variables:
     <<: *py310
 
-build_py39_image_x86_64:
-  extends: .build_image_x86_64
-  needs: [build_py39_baseimage_x86_64]
-  variables:
-    <<: *py39
-build_py39_image_aarch64:
-  extends: .build_image_aarch64
-  needs: [build_py39_baseimage_aarch64]
-  variables:
-    <<: *py39
-
-build_py38_image_x86_64:
-  extends: .build_image_x86_64
-  needs: [build_py38_baseimage_x86_64]
-  variables:
-    <<: *py38
-
 
 .test_helper:
   stage: test
@@ -210,20 +172,3 @@ test_py310_aarch64:
   needs: [build_py310_image_aarch64]
   variables:
     <<: *py310
-
-test_py39_x86_64:
-  extends: [.test_helper_x86_64]
-  needs: [build_py39_image_x86_64]
-  variables:
-    <<: *py39
-test_py39_aarch64:
-  extends: [.test_helper_aarch64]
-  needs: [build_py39_image_aarch64]
-  variables:
-    <<: *py39
-
-test_py38_x86_64:
-  extends: [.test_helper_x86_64]
-  needs: [build_py38_image_x86_64]
-  variables:
-    <<: *py38