Fix marker parsing with pyparsing 3.0.5

Closes pypa#486 Context in pyparsing: pyparsing/pyparsing#110 (comment)
9999years · Nov 9, 2021 · 7547b3e · 7547b3e
1 parent 8cb9dbf
commit 7547b3e
Showing 1 changed file with 1 addition and 3 deletions.
diff --git a/packaging/requirements.py b/packaging/requirements.py
@@ -67,9 +67,7 @@ class InvalidRequirement(ValueError):
 VERSION_SPEC.setParseAction(lambda s, l, t: t[1])
 
 MARKER_EXPR = originalTextFor(MARKER_EXPR())("marker")
-MARKER_EXPR.setParseAction(
-    lambda s, l, t: Marker(s[t._original_start : t._original_end])
-)
+MARKER_EXPR.addParseAction(lambda s, l, t: Marker(t[0]))
 MARKER_SEPARATOR = SEMICOLON
 MARKER = MARKER_SEPARATOR + MARKER_EXPR