make grafana work again by overlaying from small

flake.lock

@@ -89,6 +89,22 @@
         "type": "github"
       }
     },
+    "nixpkgs-small": {
+      "locked": {
+        "lastModified": 1735581264,
+        "narHash": "sha256-q4ocr/efe8RXw7/SPpTZVqw6GNRWTEMdOUMt66QephQ=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "98f9d01a955f7d568df2d1d362481f5423318216",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable-small",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs_2": {
       "locked": {
         "lastModified": 1733097829,
@@ -112,6 +128,7 @@
         "nixpkgs": "nixpkgs",
         "nixpkgs-borg": "nixpkgs-borg",
         "nixpkgs-btrbk": "nixpkgs-btrbk",
+        "nixpkgs-small": "nixpkgs-small",
         "sops-nix": "sops-nix",
         "treefmt": "treefmt"
       }

flake.nix

@@ -3,6 +3,7 @@
 
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    nixpkgs-small.url = "github:nixos/nixpkgs/nixos-unstable-small";
     sops-nix = {
       url = "github:Mic92/sops-nix";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -55,6 +56,9 @@
         flake: pkgNames: final: prev:
         overridePkgsFromFlake prev flake pkgNames;
       overlays = [
+        (overlayPkgsFromFlake inputs.nixpkgs-small [
+          "prometheus" # fails to build on unstable
+        ])
       ];
 
       pkgsFor = lib.genAttrs systems (

hosts/chunk/default.nix

@@ -21,6 +21,7 @@
     ./redlib.nix
     ./vaultwarden.nix
     ./wireguard.nix
+    ./grafana.nix
     ./tor.nix
     ./conduit.nix
     ./immich.nix