Use the Go/Cobra version of zet

Signed-off-by: Oliver Davies <oliver@oliverdavies.uk>

modules/scripts/zet.nix

@@ -7,19 +7,20 @@ in
   perSystem =
     { pkgs, ... }:
     {
-      packages.${name} = pkgs.writeShellApplication {
+      packages.${name} = pkgs.buildGoModule {
         inherit name;
 
-        bashOptions = [ "pipefail" ];
-
         runtimeInputs = with pkgs; [
-          bashInteractive
-          coreutils
-          fzf
           git
         ];
 
-        text = builtins.readFile "${inputs.zet}/${name}";
+        src = inputs.zet;
+
+        vendorHash = "sha256-pprnK2JKmPuR3Q+F8+vMDEdowlb3oX4BOOzW8NGOqgs=";
+
+        postInstall = ''
+          mv $out/bin/cmd-zet $out/bin/zet
+        '';
       };
     };