From 82dcbe0510170981668556e33732fa7fc0be0d78 Mon Sep 17 00:00:00 2001
From: Robert Hensing <robert@roberthensing.nl>
Date: Wed, 14 May 2025 22:48:56 +0200
Subject: [PATCH] tests/function/flakes/relative-paths: Test #13164

(cherry picked from commit eaee0b4740dcc82e3fec8482d5f803a45741594d)
---
 tests/functional/flakes/relative-paths.sh | 43 +++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/tests/functional/flakes/relative-paths.sh b/tests/functional/flakes/relative-paths.sh
index 7a76bee1b..7480cd504 100644
--- a/tests/functional/flakes/relative-paths.sh
+++ b/tests/functional/flakes/relative-paths.sh
@@ -131,3 +131,46 @@ EOF
   # would fail:
   nix eval .#ok
 )
+
+# https://github.com/NixOS/nix/issues/13164
+mkdir -p "$TEST_ROOT/issue-13164/nested-flake1/nested-flake2"
+(
+  cd "$TEST_ROOT/issue-13164"
+  git init
+  git config --global user.email "you@example.com"
+  git config --global user.name "Your Name"
+  cat >flake.nix <<EOF
+{
+  inputs.nestedFlake1.url = "path:./nested-flake1";
+  outputs = { self, nestedFlake1 }: {
+    inherit nestedFlake1;
+  };
+}
+EOF
+
+  cat >nested-flake1/flake.nix <<EOF
+{
+  inputs.nestedFlake2.url = "path:./nested-flake2";
+
+  outputs = { self, nestedFlake2 }: {
+    name = "nestedFlake1";
+    inherit nestedFlake2;
+  };
+}
+EOF
+
+  cat >nested-flake1/nested-flake2/flake.nix <<EOF
+{
+  outputs = { self }: {
+    name = "nestedFlake2";
+  };
+}
+EOF
+
+  git add .
+  git commit -m "Initial commit"
+
+  # I don't understand why two calls are necessary to reproduce the issue.
+  nix eval --json .#nestedFlake1.nestedFlake2 --no-eval-cache
+  nix eval --json .#nestedFlake1.nestedFlake2 --no-eval-cache
+)