From 753b1cd663a25145fd75aa1517059fafed0878ee Mon Sep 17 00:00:00 2001
From: Matt Sturgeon <matt@sturgeon.me.uk>
Date: Mon, 8 Jun 2026 06:05:54 +0100
Subject: [PATCH] tests/nixpkgs-fetch: cross-check with `version-info.toml`

---
 tests/nixpkgs-fetch.nix | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tests/nixpkgs-fetch.nix b/tests/nixpkgs-fetch.nix
index 3010b8b6..646b401b 100644
--- a/tests/nixpkgs-fetch.nix
+++ b/tests/nixpkgs-fetch.nix
@@ -35,6 +35,7 @@
 #     nix-instantiate --eval nixpkgs.nix --attr outPath --option experimental-features ''
 
 let
+  version-info = lib.importTOML ../version-info.toml;
   flake-input = self.inputs.nixpkgs.sourceInfo;
   pinned-input = import ../nixpkgs.nix;
 in
@@ -47,6 +48,8 @@ linkFarmFromDrvs "nixpkgs-fetch-test" [
       strictDeps = true;
 
       hasPrimop = builtins ? fetchTree;
+      versionInfo = version-info;
+
       expected = flake-input;
       actual = pinned-input;
 
@@ -73,6 +76,13 @@ linkFarmFromDrvs "nixpkgs-fetch-test" [
         exit 1
       fi
 
+      expectedRev=$(jq --raw-output .expectedAttrs.rev "$NIX_ATTRS_JSON_FILE")
+      versionInfoRev=$(jq --raw-output .versionInfo.nixpkgs_rev "$NIX_ATTRS_JSON_FILE")
+      [ "$expectedRev" = "$versionInfoRev" ] || {
+        echo "Expected version-info nixpkgs_rev '$versionInfoRev' to be '$expectedRev'" >&2
+        exit 1
+      }
+
       mkdir "$out"
       jq --sort-keys .expectedAttrs "$NIX_ATTRS_JSON_FILE" > "$out/expected.json"
       jq --sort-keys .actualAttrs "$NIX_ATTRS_JSON_FILE" > "$out/actual.json"