Initial commit

home/terminals/kitty/cwd.nix

@@ -0,0 +1,63 @@
+{pkgs, ...}: let
+  hyprctl = pkgs.lib.getExe' pkgs.hyprland "hyprctl";
+  jq = pkgs.lib.getExe pkgs.jq;
+  pgrep = pkgs.lib.getExe' pkgs.procps "pgrep";
+  kitty = pkgs.lib.getExe pkgs.kitty;
+
+  # A kitty wrapper, to launch a new kitty window at the same path of the currently focused kitty window.
+  # Only works with zsh
+  kitty-cwd =
+    pkgs.writeShellScriptBin "kitty-cwd"
+    # sh
+    ''
+      active_window="$(${hyprctl} activewindow -j)"
+      class="$(echo "$active_window" | ${jq} -r .class)"
+      pid="$(echo "$active_window" | ${jq} -r .pid)"
+
+      leaf_cwd=""
+
+      if [[ "$class" == "kitty" ]]; then
+        current_pid="$pid"
+
+        while true; do
+          child_pid=$(${pgrep} -P "$current_pid" -n)
+          if [[ -z "$child_pid" ]]; then break; fi
+
+          cwd_file="''${XDG_RUNTIME_DIR:-/tmp}/kitty-cwd-$child_pid"
+          if [[ -f "$cwd_file" ]]; then
+            leaf_cwd=$(cat "$cwd_file")
+          fi
+
+          current_pid="$child_pid"
+        done
+      fi
+
+      target="''${leaf_cwd:-$HOME}"
+      ${kitty} --directory "$target"
+    '';
+in {
+  home.packages = [
+    kitty-cwd
+  ];
+
+  programs = {
+    kitty.settings = {
+      allow_remote_control = "yes";
+      listen_on = "unix:/tmp/kitty-{kitty_pid}";
+    };
+
+    zsh.initContent =
+      # sh
+      ''
+        write_cwd() {
+          echo "$PWD" > "''${XDG_RUNTIME_DIR:-/tmp}/kitty-cwd-$$"
+        }
+        precmd_functions+=(write_cwd)
+
+        cleanup_cwd() {
+          rm -f "''${XDG_RUNTIME_DIR:-/tmp}/kitty-cwd-$$"
+        }
+        zshexit_functions+=(cleanup_cwd)
+      '';
+  };
+}