feat(starship): show jj status in prompt

home.nix

@@ -429,5 +429,32 @@ in {
 
   programs.starship = {
     enable =  true;
+    settings = {
+      custom.jj = {
+        command = ''
+          jj log -r@ -n1 --ignore-working-copy --no-graph --color always -T '
+            separate(" ",
+              bookmarks.map(|x| truncate_end(10, x.name(), "…")).join(" "),
+              tags.map(|x| truncate_end(10, x.name(), "…")).join(" "),
+              surround("\"", "\"", truncate_end(24, description.first_line(), "…")),
+              if(conflict, "conflict"),
+              if(divergent, "divergent"),
+              if(hidden, "hidden"),          )
+          '
+        '';
+        when = "jj root --ignore-working-copy";
+        symbol = "jj";
+      };
+      custom.jjstate = {
+        command = ''
+          jj log -r@ -n1 --ignore-working-copy --no-graph --stat | tail -n1 | ${pkgs.sd}/bin/sd "(\d+) files? changed, (\d+) insertions?\(\+\), (\d+) deletions?\(-\)" ' ''${1}m ''${2}+ ''${3}-' | ${pkgs.sd}/bin/sd " 0." ""
+        '';
+        when = "jj root --ignore-working-copy";
+      };
+      git_state.disabled = true;
+      git_commit.disabled = true;
+      git_metrics.disabled = true;
+      git_branch.disabled = true;
+    };
   };
 }