From b1bccc25ec523b1d4f6508ccb750b91bc07bb473 Mon Sep 17 00:00:00 2001
From: Yarny0 <41838844+Yarny0@users.noreply.github.com>
Date: Fri, 23 Feb 2024 15:02:43 +0100
Subject: [PATCH] pythonCatchConflictsHook: test cyclic dependency

Add test case where a package enlists
itself as propagated build input.
---
 .../python/hooks/python-catch-conflicts-hook-tests.nix   | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkgs/development/interpreters/python/hooks/python-catch-conflicts-hook-tests.nix b/pkgs/development/interpreters/python/hooks/python-catch-conflicts-hook-tests.nix
index f3d9235799e0..cba1034e0963 100644
--- a/pkgs/development/interpreters/python/hooks/python-catch-conflicts-hook-tests.nix
+++ b/pkgs/development/interpreters/python/hooks/python-catch-conflicts-hook-tests.nix
@@ -78,6 +78,15 @@ in {
       ];
     };
 
+  # multi-output derivation with dependency on itself must not crash
+  cyclic-dependencies =
+    generatePythonPackage {
+      pname = "cyclic-dependencies";
+      preFixup = ''
+        propagatedBuildInputs+=("$out")
+      '';
+    };
+
   # Simplest test case that should trigger a conflict
   catches-simple-conflict = let
     # this build must fail due to conflicts