fix: emitting packages

flake.nix

@@ -24,7 +24,7 @@
     {
       # Expose the configuration information.
       lib = {
-        mkShellHook =
+        mkConfig =
           { system
           , pkgs
           , conform ? { }
@@ -40,17 +40,22 @@
               rust = rustDefaults // rust;
             };
           in
-          ''
-          echo '**************' yes
-            ${configs.shellHook}
-            ${pkgs.lefthook}/bin/lefthook install
-          '';
+          {
+            packages = [ pkgs.lefthook ];
+
+            shellHook = ''
+              ${configs.shellHook}
+              ${pkgs.lefthook}/bin/lefthook install
+
+              alias lefthook="${pkgs.lefthook}/bin/lefthook"
+            '';
+          };
       };
 
       # Set up the developer shell.
       devShells = forEachSupportedSystem ({ system, pkgs }:
         let
-          configShellHook = lib.mkShellHook {
+          config = lib.mkConfig {
             inherit system pkgs;
             #rust.enable = false;
           };
@@ -58,7 +63,8 @@
         {
           # Shell
           default = pkgs.mkShell {
-            shellHook = configShellHook;
+            packages = [ ] ++ config.packages;
+            shellHook = config.shellHook;
           };
         });