From 16f0181265cb44d42eb13b609af386a8f692eefb Mon Sep 17 00:00:00 2001
From: Ihar Hrachyshka <ihar.hrachyshka@gmail.com>
Date: Tue, 6 Oct 2026 23:14:49 -0400
Subject: [PATCH] romm: fix reported version

(cherry picked from commit 060ffd2f2c2718d22e1aea2caf002e3433385d89)
---
 nixos/tests/romm.nix             | 7 +++++--
 pkgs/by-name/ro/romm/package.nix | 6 ++++++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/nixos/tests/romm.nix b/nixos/tests/romm.nix
index 175fa6bf0b53..a81db816ec8c 100644
--- a/nixos/tests/romm.nix
+++ b/nixos/tests/romm.nix
@@ -1,4 +1,4 @@
-{ lib, ... }:
+{ config, lib, ... }:
 
 {
   name = "romm";
@@ -26,6 +26,8 @@
   };
 
   testScript = ''
+    import json
+
     machine.start()
 
     with subtest("services come up"):
@@ -39,7 +41,8 @@
         machine.wait_for_unit("nginx.service")
 
     with subtest("backend API answers"):
-        machine.succeed("curl -sf http://127.0.0.1:8080/api/heartbeat")
+        heartbeat = json.loads(machine.succeed("curl -sf http://127.0.0.1:8080/api/heartbeat"))
+        assert heartbeat["SYSTEM"]["VERSION"] == ${builtins.toJSON config.nodes.machine.services.romm.package.version}
 
     with subtest("nginx serves the frontend and proxies the API"):
         machine.succeed("curl -sf http://localhost/ | grep -iq romm")
diff --git a/pkgs/by-name/ro/romm/package.nix b/pkgs/by-name/ro/romm/package.nix
index 3f452d602518..b877fa38cacd 100644
--- a/pkgs/by-name/ro/romm/package.nix
+++ b/pkgs/by-name/ro/romm/package.nix
@@ -32,6 +32,12 @@ stdenvNoCC.mkDerivation (
 
     nativeBuildInputs = [ makeWrapper ];
 
+    # Upstream stamps this placeholder during its container release build.
+    postPatch = ''
+      substituteInPlace backend/__version__.py \
+        --replace-fail '<version>' '${finalAttrs.version}'
+    '';
+
     dontConfigure = true;
     dontBuild = true;