Accommodate functools without a cache decorator

FNALssi · May 17, 2024 · 8c3cb0e · 8c3cb0e
1 parent 42f6b32
commit 8c3cb0e
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/packages/fnal-github-package/package.py b/packages/fnal-github-package/package.py
@@ -15,6 +15,9 @@
 import bisect
 import functools
 
+# Python versions older than 3.9 do not support functools.cache
+cache_property = getattr(functools, "cache", functools.lru_cache)
+
 RE_VERSION = re.compile(r"^v")
 RE_UPS_STYLE = re.compile(r"^v(\d+)(_\d+)*.*")
 RE_DOT_STYLE = re.compile(r"(\d+)(\.\d+)*.*")
@@ -119,7 +122,7 @@ def _url_for_tag(self, version_str):
         return f"{self.git}/archive/refs/tags/{version_str}.tar.gz"
 
     @property
-    @functools.cache
+    @cache_property
     def _version_patterns(self):
         self.version_patterns.sort(key=dotted_version_str)
         result = []