chore: add nix to hermes agent

flake.lock

@@ -406,16 +406,15 @@
         "uv2nix": "uv2nix_2"
       },
       "locked": {
-        "lastModified": 1777573861,
-        "narHash": "sha256-whY/1WL2fQUhPqDp7CGm3MSwOOo7FB1eADhNVnHeCRU=",
+        "lastModified": 1778092994,
+        "narHash": "sha256-vpYpQTIbQnn32IF3sW9icfMFE9MR2C0mA45t4dQryBw=",
         "owner": "NousResearch",
         "repo": "hermes-agent",
-        "rev": "73bf3ab1b22314ed9dfecbb59242c03742fe72af",
+        "rev": "a345f7b6e56b8f497608089ddf2a7c80997c90c9",
         "type": "github"
       },
       "original": {
         "owner": "NousResearch",
-        "ref": "v2026.4.30",
         "repo": "hermes-agent",
         "type": "github"
       }

flake.nix

@@ -73,7 +73,7 @@
       url = "github:vercel-labs/skills";
       flake = false;
     };
-    hermes-agent.url = "github:NousResearch/hermes-agent/v2026.4.30";
+    hermes-agent.url = "github:NousResearch/hermes-agent";
 
     rustfs = {
       url = "github:rustfs/rustfs-flake";

hosts/m3-hermes/services/hermes-agent.nix

@@ -78,7 +78,7 @@ in {
     enable = true;
     addToSystemPackages = true;
 
-    extraPackages = with pkgs; [docker git tea];
+    extraPackages = with pkgs; [docker git tea nix];
 
     # Secrets via agenix
     environmentFiles = [