home manager: shell: starship: use pastel-powerline

home/emmatherock/shell.nix

@@ -1,4 +1,10 @@
 {
   programs.fish.enable = true;
-  programs.starship.enable = true;
+  programs.starship = {
+    enable = true;
+    enableFishIntegration = true;
+    presets = [
+      "pastel-powerline"
+    ];
+  };
 }