diff --git a/flake.lock b/flake.lock
index b97b56a..06e1685 100644
--- a/flake.lock
+++ b/flake.lock
@@ -59,10 +59,27 @@
         "type": "github"
       }
     },
+    "nixpkgs-unstable": {
+      "locked": {
+        "lastModified": 1778672786,
+        "narHash": "sha256-Blg88K1jwG+P0Mr27+rKMFCufdrWkV3wWh9AdYtz0FQ=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "eef00dfd8a712b34af845f9350bac681b1228bd1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "naersk": "naersk",
         "nixpkgs": "nixpkgs",
+        "nixpkgs-unstable": "nixpkgs-unstable",
         "treefmt-nix": "treefmt-nix"
       }
     },
diff --git a/hive-c0re/src/broker.rs b/hive-c0re/src/broker.rs
index 0eb2555..a88bbd8 100644
--- a/hive-c0re/src/broker.rs
+++ b/hive-c0re/src/broker.rs
@@ -31,8 +31,8 @@ impl Broker {
             std::fs::create_dir_all(parent)
                 .with_context(|| format!("create db parent {}", parent.display()))?;
         }
-        let conn = Connection::open(path)
-            .with_context(|| format!("open broker db {}", path.display()))?;
+        let conn =
+            Connection::open(path).with_context(|| format!("open broker db {}", path.display()))?;
         conn.execute_batch(SCHEMA).context("apply broker schema")?;
         Ok(Self {
             conn: Mutex::new(conn),
diff --git a/hive-c0re/src/coordinator.rs b/hive-c0re/src/coordinator.rs
index 20c510f..b2ba2f9 100644
--- a/hive-c0re/src/coordinator.rs
+++ b/hive-c0re/src/coordinator.rs
@@ -34,8 +34,7 @@ impl Coordinator {
         std::fs::create_dir_all(&agent_dir)
             .with_context(|| format!("create agent dir {}", agent_dir.display()))?;
         let socket_path = Self::socket_path(name);
-        let socket =
-            agent_server::start(name.to_owned(), socket_path, self.broker.clone()).await?;
+        let socket = agent_server::start(name.to_owned(), socket_path, self.broker.clone()).await?;
         self.agents.lock().unwrap().insert(name.to_owned(), socket);
         Ok(agent_dir)
     }
diff --git a/nix/templates/agent-base.nix b/nix/templates/agent-base.nix
index 4a56a34..c633925 100644
--- a/nix/templates/agent-base.nix
+++ b/nix/templates/agent-base.nix
@@ -2,8 +2,7 @@
 {
   boot.isNspawnContainer = true;
 
-  nixpkgs.config.allowUnfreePredicate =
-    pkg: builtins.elem (pkgs.lib.getName pkg) [ "claude-code" ];
+  nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (pkgs.lib.getName pkg) [ "claude-code" ];
 
   environment.systemPackages = with pkgs; [
     hyperhive