Clean up and update flake

flake.lock

@@ -1,26 +1,27 @@
 {
   "nodes": {
-    "flake-utils": {
+    "nix-filter": {
       "locked": {
-        "lastModified": 1653893745,
-        "narHash": "sha256-0jntwV3Z8//YwuOjzhV2sgJJPt+HY6KhU7VZUL0fKZQ=",
+        "lastModified": 1653590866,
+        "narHash": "sha256-E4yKIrt/S//WfW5D9IhQ1dVuaAy8RE7EiCMfnbrOC78=",
         "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "1ed9fb1935d260de5fe1c2f7ee0ebaae17ed2fa1",
+        "repo": "nix-filter",
+        "rev": "3e81a637cdf9f6e9b39aeb4d6e6394d1ad158e16",
         "type": "github"
       },
       "original": {
-        "id": "flake-utils",
-        "type": "indirect"
+        "owner": "numtide",
+        "repo": "nix-filter",
+        "type": "github"
       }
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1655200170,
-        "narHash": "sha256-/yzkX+10sJhYNIcTtZ5ObS+nh/HrJp01XLaubzbRDcU=",
+        "lastModified": 1659052185,
+        "narHash": "sha256-TUbwbzCbprtWB9EtXPM52cWuKETuCV3H+cMXjLRbwTw=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "9ff91ce2e4c5d70551d4c8fd8830931c6c6b26b8",
+        "rev": "9370544d849be8a07193e7611d02e6f6f1b10768",
         "type": "github"
       },
       "original": {
@@ -48,7 +49,7 @@
     },
     "root": {
       "inputs": {
-        "flake-utils": "flake-utils",
+        "nix-filter": "nix-filter",
         "nixpkgs": "nixpkgs",
         "npmlock2nix": "npmlock2nix"
       }

flake.nix

@@ -3,6 +3,7 @@
 
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-22.05";
+    nix-filter.url = "github:numtide/nix-filter";
     npmlock2nix = {
       url = "github:nix-community/npmlock2nix";
       flake = false;
@@ -12,7 +13,7 @@
   outputs = {
     self,
     nixpkgs,
-    flake-utils,
+    nix-filter,
     npmlock2nix,
   }: let
     # At the moment, we only deploy to x86_64-linux. Update when we
@@ -27,7 +28,11 @@
   in {
     packages.${system} = rec {
       tlaternet-templates = pkgs.npmlock2nix.build {
-        src = self;
+        src = pkgs.lib.cleanSource self;
+
+        buildInputs = with pkgs; [
+          util-linux
+        ];
 
         installPhase = ''
           cp -r dist $out/
@@ -35,8 +40,6 @@
 
         node_modules_attrs = {
           buildInputs = with pkgs; [
-            elmPackages.elm
-
             pkg-config
             python3
             vips
@@ -50,11 +53,21 @@
 
     devShells.${system} = {
       default = pkgs.npmlock2nix.shell {
-        src = self;
+        src = nix-filter.lib {
+          root = self;
+          include = [
+            "package.json"
+            "package-lock.json"
+          ];
+        };
+
+        buildInputs = with pkgs.nodePackages; [
+          npm-check-updates
+          prettier
+        ];
+
         node_modules_attrs = {
           buildInputs = with pkgs; [
-            elmPackages.elm
-
             pkg-config
             python3
             vips