feat(flake): Update based on template to get the live helper function

flake.nix

@@ -36,7 +36,7 @@
         # format and copying other resources (such as images).
         default = pkgs.runCommand "resume" {} ''
           ln -s ${./resume.nix} resume.nix
-          HOME=$(mktemp -d) ${self.packages.${system}.builder}
+          HOME=$(mktemp -d) ${lib.getExe self.packages.${system}.builder}
           mkdir $out
           cp -v resume.html $out/index.html
           cp -v ${./headshot.jpg} $out/headshot.jpg
@@ -46,16 +46,7 @@
       # Allows to run a live preview server using "nix run .#live"
       apps = {
         live.type = "app";
-        live.program = builtins.toString (pkgs.writeShellScript "entr-reload" ''
-          ${self.packages.${system}.builder}
-
-          ${lib.getExe pkgs.nodePackages.live-server} \
-            --watch=resume.html --open=resume.html --wait=300 &
-
-          printf "\n%s" resume.{toml,nix,json} |
-            ${lib.getExe pkgs.xe} -s 'test -f "$1" && echo "$1"' |
-            ${lib.getExe pkgs.entr} -p ${self.packages.${system}.builder}
-        '');
+        live.program = lib.getExe (jsonresume-nix.lib.${system}.buildLiveServer self.packages.${system}.builder);
       };
     })
     // {inherit inputs;};