From 408fcc6584ca598533a0f8c9012d60450db148a8 Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Thu, 12 Nov 2026 02:33:43 +0000
Subject: populate: place overrides on sources with generated flakes correctly

An override below an input drawn from a source that has a generated
flake itself got placed on that generated flake, which has no such
input, so Nix ignored it with a warning.  Generated flakes have their
source as input of the same name, so the override goes below that.

An edge case overrides an input of a source with a generated flake.
---
 tests/fixtures.sh | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'tests/fixtures.sh')

diff --git a/tests/fixtures.sh b/tests/fixtures.sh
index 9813c8f..8222b13 100755
--- a/tests/fixtures.sh
+++ b/tests/fixtures.sh
@@ -216,6 +216,23 @@ cat > /fixtures/rel/flake.nix <<'NIX'
 NIX
 (cd /fixtures/rel && nix flake lock && git init -q && commit rel)
 
+# two, c1, c2: a flake with two inputs, and two flakes to draw them from.
+mkdir /fixtures/two /fixtures/c1 /fixtures/c2
+cat > /fixtures/two/flake.nix <<NIX
+{
+  inputs.p.url = "$url/inner.tar.gz";
+  inputs.q.url = "$url/inner.tar.gz";
+  outputs = { p, q, ... }: { greeting = "two:\${p.who}+\${q.who}"; };
+}
+NIX
+(cd /fixtures/two && nix flake lock)
+cat > /fixtures/c1/flake.nix <<'NIX'
+{ outputs = _: { who = "c1"; }; }
+NIX
+cat > /fixtures/c2/flake.nix <<'NIX'
+{ outputs = _: { who = "c2"; }; }
+NIX
+
 # noflake: a directory without flake.nix.
 mkdir /fixtures/noflake
 echo noflake > /fixtures/noflake/README
-- 
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