Fix crash when exported requirements contain Poetry warnings

cjolowicz · Jun 11, 2021 · b43c602 · b43c602
1 parent 595c744
commit b43c602
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/src/nox_poetry/sessions.py b/src/nox_poetry/sessions.py
@@ -60,7 +60,14 @@ def to_constraint(requirement_string: str, line: int) -> Optional[str]:
     """Convert requirement to constraint."""
     if any(
         requirement_string.startswith(prefix)
-        for prefix in ("-", "file://", "git+https://", "http://", "https://")
+        for prefix in (
+            "-",
+            "file://",
+            "git+https://",
+            "http://",
+            "https://",
+            "Warning: ",  # Poetry writes warnings to stdout.
+        )
     ):
         return None