Create a pyproject.toml file and define version there

.github/workflows/tests.yml

@@ -24,7 +24,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install pytest pytest-cov
+        pip install pytest pytest-cov tomli
         pip install -e .
 
     - name: Run tests

pynanigans/__init__.py

@@ -1,4 +1,10 @@
-__version__ = "0.2.0"
+import tomli
+from pathlib import Path
+
+# Read version from pyproject.toml
+with open(Path(__file__).parent.parent / "pyproject.toml", "rb") as f:
+    pyproject = tomli.load(f)
+    __version__ = pyproject["project"]["version"]
 
 from .grids import get_metrics, get_coords, get_grid
 from .utils import *

pyproject.toml

@@ -0,0 +1,29 @@
+[build-system]
+requires = ["setuptools>=45", "wheel", "tomli"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "pynanigans"
+version = "0.2.0"
+description = "A Python package for working with Oceananigans data"
+readme = "README.md"
+requires-python = ">=3.9"
+license = {text = "MIT"}
+authors = [
+    {name = "Tomas Chor", email = "contact@tomaschor.xyz"}
+]
+classifiers = [
+    "Development Status :: 3 - Alpha",
+    "Intended Audience :: Science/Research",
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: Python",
+]
+dependencies = [
+    "numpy",
+    "xarray",
+    "xgcm",
+    "matplotlib",
+]
+
+[project.urls]
+Homepage = "https://github.com/tomchor/pynanigans" 

setup.py

@@ -1,8 +1,14 @@
 from setuptools import setup, find_packages
+import tomli
+
+# Read version from pyproject.toml
+with open("pyproject.toml", "rb") as f:
+    pyproject = tomli.load(f)
+    version = pyproject["project"]["version"]
 
 setup(
     name="pynanigans",
-    version="0.1.0",
+    version=version,
     packages=find_packages(),
     install_requires=[
         "numpy",