Get hledger to work

I couldn't figure out how to update stable for some reason

flake.lock

@@ -2,14 +2,18 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 0,
-        "narHash": "sha256-XD6GfVgSfWjqqWAuybkvaxS1/xrwTrh3V1dSkoYJW3Q=",
-        "path": "/nix/store/jjjyazlmzjls1kdpgn776iy9w345yq7l-source",
-        "type": "path"
+        "lastModified": 1719254875,
+        "narHash": "sha256-ECni+IkwXjusHsm9Sexdtq8weAq/yUyt1TWIemXt3Ko=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "2893f56de08021cffd9b6b6dfc70fd9ccd51eb60",
+        "type": "github"
       },
       "original": {
-        "id": "nixpkgs",
-        "type": "indirect"
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
       }
     },
     "root": {

flake.nix

@@ -1,4 +1,7 @@
 {
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+  };
   outputs = { self, nixpkgs }: {
     # miscellaneous stuff that's important 
     nixosModules.base = {lib, ...}: {
@@ -52,6 +55,15 @@
       };
       nixpkgs.config.allowUnfree = true;
     };
+    nixosModules.hledger = {...}: {
+      services.hledger-web = {
+        enable = true;
+        allow = "edit";
+        host = "0.0.0.0";
+        baseUrl = "http://192.168.1.37:5000";
+      };
+      networking.firewall.allowedTCPPorts = [ 5000 ];
+    };
     nixosModules.samba = {...}: {
       services.samba = {
         enable = true;
@@ -82,6 +94,7 @@
         self.nixosModules.zfs
         self.nixosModules.plex
         self.nixosModules.samba
+        self.nixosModules.hledger
       ];
     };
   };