add flatpaks with nix-flatpak, but like right this time

hosts/nixos/default.nix

@@ -95,6 +95,10 @@
             command = "/etc/profiles/per-user/blake/bin/nom";
             options = ["NOPASSWD"];
           }
+          {
+            command = "/etc/profiles/per-user/blake/bin/nom-build";
+            options = ["NOPASSWD"];
+          }
         ];
       }
     ];