chore: spec0 compat (python 3.14 compat, numpy 2 min)

Author: ilan-gold

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -61,7 +61,7 @@ body:
       value: |
         ```python
         # /// script
-        # requires-python = ">=3.11"
+        # requires-python = ">=3.12"
         # dependencies = [
         #   "zarr@git+https://github.com/zarr-developers/zarr-python.git@main",
         # ]

.github/workflows/gpu_test.yml

@@ -24,7 +24,7 @@ jobs:
     runs-on: gpu-runner
     strategy:
       matrix:
-        python-version: ['3.11']
+        python-version: ['3.12']
         numpy-version: ['2.2']
         dependency-set: ["minimal"]
 

.github/workflows/nightly_wheels.yml

@@ -20,7 +20,7 @@ jobs:
       - uses: actions/setup-python@v6
         name: Install Python
         with:
-          python-version: '3.13'
+          python-version: '3.14'
 
       - name: Install build dependencies
         run: |

.github/workflows/releases.yml

@@ -19,7 +19,7 @@ jobs:
       - uses: actions/setup-python@v6
         name: Install Python
         with:
-          python-version: '3.11'
+          python-version: '3.12'
 
       - name: Install PyBuild
         run: |

.github/workflows/test.yml

@@ -20,24 +20,24 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ['3.11', '3.12', '3.13']
-        numpy-version: ['1.26', '2.2']
+        python-version: ['3.12', '3.13', '3.14']
+        numpy-version: ['2', '2.2']
         dependency-set: ["minimal", "optional"]
         os: ["ubuntu-latest"]
         include:
-          - python-version: '3.11'
-            numpy-version: '1.26'
+          - python-version: '3.12'
+            numpy-version: '2'
             dependency-set: 'optional'
             os: 'macos-latest'
-          - python-version: '3.13'
+          - python-version: '3.14'
             numpy-version: '2.2'
             dependency-set: 'optional'
             os: 'macos-latest'
-          - python-version: '3.11'
-            numpy-version: '1.26'
+          - python-version: '3.12'
+            numpy-version: '2'
             dependency-set: 'optional'
             os: 'windows-latest'
-          - python-version: '3.13'
+          - python-version: '3.14'
             numpy-version: '2.2'
             dependency-set: 'optional'
             os: 'windows-latest'
@@ -78,12 +78,12 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.11', "3.13"]
+        python-version: ['3.12', "3.14"]
         dependency-set: ["upstream", "min_deps"]
         exclude:
-          - python-version: "3.13"
+          - python-version: "3.14"
             dependency-set: min_deps
-          - python-version: "3.11"
+          - python-version: "3.12"
             dependency-set: upstream
     steps:
     - uses: actions/checkout@v5

docs/contributing.md

@@ -155,7 +155,7 @@ When submitting a pull request, coverage will also be collected across all suppo
 
 ### Documentation
 
-Docstrings for user-facing classes and functions should follow the [numpydoc](https://numpydoc.readthedocs.io/en/stable/format.html#docstring-standard) standard, including sections for Parameters and Examples. All examples should run and pass as doctests under Python 3.11.
+Docstrings for user-facing classes and functions should follow the [numpydoc](https://numpydoc.readthedocs.io/en/stable/format.html#docstring-standard) standard, including sections for Parameters and Examples. All examples should run and pass as doctests under Python 3.12.
 
 Zarr uses mkdocs for documentation, hosted on readthedocs.org. Documentation is written in the Markdown markup language (.md files) in the `docs` folder. The documentation consists both of prose and API documentation. All user-facing classes and functions are included in the API documentation, under the `docs/api` folder using the [mkdocstrings](https://mkdocstrings.github.io/) extension. Add any new public functions or classes to the relevant markdown file in `docs/api/*.md`. Any new features or important usage information should be included in the user-guide (`docs/user-guide`). Any changes should also be included as a new file in the `changes` directory.
 

docs/index.md

@@ -21,7 +21,7 @@ Zarr-Python is a Python library for reading and writing Zarr groups and arrays.
 
 ## Installation
 
-Zarr requires Python 3.11 or higher. You can install it via `pip`:
+Zarr requires Python 3.12 or higher. You can install it via `pip`:
 
 ```bash
 pip install zarr

docs/user-guide/installation.md

@@ -4,9 +4,9 @@
 
 Required dependencies include:
 
-- [Python](https://docs.python.org/3/) (3.11 or later)
+- [Python](https://docs.python.org/3/) (3.12 or later)
 - [packaging](https://packaging.pypa.io) (22.0 or later)
-- [numpy](https://numpy.org) (1.26 or later)
+- [numpy](https://numpy.org) (2.0 or later)
 - [numcodecs](https://numcodecs.readthedocs.io) (0.14 or later)
 - [google-crc32c](https://github.com/googleapis/python-crc32c) (1.5 or later)
 - [typing_extensions](https://typing-extensions.readthedocs.io) (4.9 or later)

examples/custom_dtype/custom_dtype.py

@@ -1,5 +1,5 @@
 # /// script
-# requires-python = ">=3.11"
+# requires-python = ">=3.12"
 # dependencies = [
 #   "zarr @ git+https://github.com/zarr-developers/zarr-python.git@main",
 #   "ml_dtypes==0.5.1",

pyproject.toml

@@ -29,11 +29,11 @@ maintainers = [
     { name = "Tom Augspurger", email = "tom.w.augspurger@gmail.com" },
     { name = "Deepak Cherian" }
 ]
-requires-python = ">=3.11"
+requires-python = ">=3.12"
 # If you add a new dependency here, please also add it to .pre-commit-config.yml
 dependencies = [
     'packaging>=22.0',
-    'numpy>=1.26',
+    'numpy>=2',
     'numcodecs>=0.14',
     'google-crc32c>=1.5',
     'typing_extensions>=4.9',
@@ -52,9 +52,9 @@ classifiers = [
     'Topic :: Software Development :: Libraries :: Python Modules',
     'Operating System :: Unix',
     'Programming Language :: Python :: 3',
-    'Programming Language :: Python :: 3.11',
     'Programming Language :: Python :: 3.12',
     'Programming Language :: Python :: 3.13',
+    'Programming Language :: Python :: 3.14',
 ]
 license = "MIT"
 license-files = ["LICENSE.txt"]
@@ -163,8 +163,8 @@ COV_CORE_CONFIG = ".coveragerc"
 COV_CORE_DATAFILE = ".coverage.eager"
 
 [[tool.hatch.envs.test.matrix]]
-python = ["3.11", "3.12", "3.13"]
-numpy = ["1.26", "2.2"]
+python = ["3.12", "3.13", "3.14"]
+numpy = ["2", "2.2"]
 deps = ["minimal", "optional"]
 
 [tool.hatch.envs.test.overrides]
@@ -192,8 +192,8 @@ dependencies = [
 features = ["test", "gpu"]
 
 [[tool.hatch.envs.gputest.matrix]]
-python = ["3.11", "3.12", "3.13"]
-numpy = ["1.26", "2.2"]
+python = ["3.12", "3.13"]
+numpy = ["2", "2.2"]
 version = ["minimal"]
 
 [tool.hatch.envs.gputest.scripts]
@@ -206,7 +206,7 @@ list-env = "pip list"
 
 [tool.hatch.envs.upstream]
 template = 'test'
-python = "3.13"
+python = "3.14"
 dependencies = [
     'packaging @ git+https://github.com/pypa/packaging',
     'numpy',  # from scientific-python-nightly-wheels
@@ -231,11 +231,11 @@ description = """Test environment for minimum supported dependencies
 See Spec 0000 for details and drop schedule: https://scientific-python.org/specs/spec-0000/
 """
 template = "test"
-python = "3.11"
+python = "3.12"
 dependencies = [
     'zarr[remote]',
     'packaging==22.*',
-    'numpy==1.26.*',
+    'numpy==2.0.*',
     'numcodecs==0.14.*',  # 0.14 needed for zarr3 codecs
     'fsspec==2023.10.0',
     's3fs==2023.10.0',
@@ -352,7 +352,7 @@ ignore = [
 "tests/**" = ["ANN001", "ANN201", "RUF029", "SIM117", "SIM300"]
 
 [tool.mypy]
-python_version = "3.11"
+python_version = "3.12"
 ignore_missing_imports = true
 namespace_packages = false