feat(darwin): add brew to path

nix/homes/rafiq/desktop/darwin.nix

@@ -16,4 +16,17 @@ in
       "slack"
     ];
   };
+  flake.modules.homeManager.rafiq = {
+    # make sure brew is on the path for M1
+    programs.zsh.initContent = ''
+      if [[ $(uname -m) == 'arm64' ]]; then
+        eval "$(/opt/homebrew/bin/brew shellenv)"
+      fi
+    '';
+    programs.fish.shellInit = ''
+      if test (uname -m) = "arm64"
+        eval (/opt/homebrew/bin/brew shellenv)
+      end
+    '';
+  };
 }