MNT: Add and propagate minimum requirements following SPEC 0

Author: effigies

min-requirements.txt

@@ -0,0 +1,6 @@
+# Auto-generated by tools/update_requirements.py
+matplotlib==3.5
+numpy==1.22
+scipy==1.8
+networkx==2.7
+nibabel==4.0

pyproject.toml

@@ -34,15 +34,15 @@ classifiers = [
     "Topic :: Scientific/Engineering",
 ]
 dependencies = [
-    "matplotlib",
-    "numpy",
-    "scipy",
+    "matplotlib>=3.5",
+    "numpy>=1.22",
+    "scipy>=1.8",
 ]
 
 [project.optional-dependencies]
 full = [
-    "networkx",
-    "nibabel",
+    "networkx>=2.7",
+    "nibabel>=4.0",
 ]
 
 [project.urls]

requirements.txt

@@ -1,6 +1,6 @@
-numpy
-cython
-scipy
-matplotlib
-networkx
-nibabel
+# Auto-generated by tools/update_requirements.py
+matplotlib>=3.5
+numpy>=1.22
+scipy>=1.8
+networkx>=2.7
+nibabel>=4.0

tools/update_requirements.py

@@ -0,0 +1,27 @@
+#!/usr/bin/env python3
+import sys
+from pathlib import Path
+
+import tomli
+
+repo_root = Path(__file__).parent.parent
+pyproject_toml = repo_root / 'pyproject.toml'
+reqs = repo_root / 'requirements.txt'
+min_reqs = repo_root / 'min-requirements.txt'
+
+with open(pyproject_toml, 'rb') as fobj:
+    config = tomli.load(fobj)
+    project = config['project']
+requirements = project['dependencies'] + project['optional-dependencies']['full']
+
+script_name = Path(__file__).relative_to(repo_root)
+
+lines = [f'# Auto-generated by {script_name}', '']
+
+# Write requirements
+lines[1:-1] = requirements
+reqs.write_text('\n'.join(lines))
+
+# Write minimum requirements
+lines[1:-1] = [req.replace('>=', '==').replace('~=', '==') for req in requirements]
+min_reqs.write_text('\n'.join(lines))