rewrite and refactor a lot, delete redundant configs

modules/shell/starship.nix

@@ -0,0 +1,36 @@
+{ ... }: {
+  home-manager.users.jade = { pkgs, ... }: {
+    programs.starship = {
+      enable = true;
+      settings = {
+        format = "$all$directory$character";
+        character = {
+          success_symbol = "[\\$](green)";
+          error_symbol = "[X](red)";
+        };
+        git_branch = {
+          format = "\\[[$symbol$branch]($style)\\]";
+          symbol = " ";
+        };
+        git_status = {
+          format = "([\\[$all_status$ahead_behind\\]]($style))";
+        };
+        haskell = {
+          format = "\\[[$symbol($version)]($style)\\]";
+          symbol = " ";
+        };
+        cmd_duration = {
+          format = "\\[[⏱ $duration]($style)\\]";
+        };
+        nix_shell = { 
+          format = "\\[[$symbol$state( \\($name\\))]($style)\\]";
+          symbol = " ";
+        };
+        rust = {
+          format = "\\[[$symbol($version)]($style)\\]";
+          symbol = " ";
+        };
+      };
+    };
+  };
+}