Add minimum shared library version check

Author: godotalgorithm

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "mopactools"
-version = "0.1.0"
+version = "0.1.1"
 authors = [
   { name="Jonathan Moussa", email="jemoussa@vt.edu" },
 ]
@@ -23,6 +23,7 @@ license = { text="Apache-2.0" }
 dependencies = [
     "numpy",
     "scipy",
+    "packaging",
 ]
 
 [project.urls]

src/mopactools/api.py

@@ -19,6 +19,7 @@
 import ctypes
 import numpy as np
 import scipy
+from packaging.version import Version, InvalidVersion
 from . import binding
 
 class MopacSystem:
@@ -646,4 +647,9 @@ def from_file(input_path):
 binding.libmopac.get_mopac_version(buffer)
 #: Semantic version number of the MOPAC shared library
 VERSION = buffer.value.decode('utf-8')
-# In the future, it might make sense to put a minimum version test here
+MIN_VERSION = "23.2"
+try:
+    if Version(VERSION) < Version(MIN_VERSION):
+        raise ValueError(f"MOPAC shared library version ({VERSION}) is older than the minimum required version ({MIN_VERSION}).")
+except InvalidVersion:
+    print(f"WARNING: MOPAC shared library has a non-standard version ({VERSION}) and might not be compatible with mopactools.")