add tree selections

dotfiles/kakoune.nix

@@ -11,6 +11,8 @@ let
   similar-sort-files-cmd = arg:
     "git ls-files --others --cached --exclude-standard | ${similar-sort}/bin/similar-sort ${arg} | fzf --tiebreak index";
 
+  kak-tree = pkgs.callPackages ../pkgs/kak-tree { };
+
   # plugins
   pluginSources = lib.filterAttrs
     (_: source: lib.attrByPath [ "kakoune" ] "" source == "plugin") sources;
@@ -22,7 +24,12 @@ let
       name = name;
       src = source;
     }) pluginSources;
-  plugins = lib.mapAttrsToList (_: plugin: plugin) pluginAttrs;
+  plugins = (lib.mapAttrsToList (_: plugin: plugin) pluginAttrs) ++ [
+    (kakoune.mkPlugin {
+      name = "kak-tree";
+      src = "${kak-tree.src}/rc";
+    })
+  ];
 
   colorAttrs = lib.mapAttrs (name: source:
     kakoune.mkColorPlugin {
@@ -209,6 +216,18 @@ in {
         exec -draft hH <a-k>fd<ret> d
         exec <esc>
       }}
+
+      # kak-tree
+      set global tree_cmd '${kak-tree.kak-tree}/bin/kak-tree -vvv'
+
+      declare-user-mode tree
+      map global user t ': enter-user-mode -lock tree<ret>' -docstring 'Tree Selection'
+      map global tree h ': tree-select-parent-node<ret>' -docstring 'Parent'
+      map global tree l ': tree-select-children<ret>' -docstring 'Children'
+      map global tree <a-l> ': tree-select-first-child<ret>' -docstring 'First Child'
+      map global tree j ': tree-select-next-node<ret>' -docstring 'Next Node'
+      map global tree k ': tree-select-previous-node<ret>' -docstring 'Previous Node'
+      map global tree ? ': tree-node-sexp<ret>' -docstring 'Show Node'
     '';
   };
 
@@ -217,4 +236,5 @@ in {
     "${kakoune.mkColors colors}/share/kak/colors";
   home.file.".config/kak/autoload".source =
     "${kakoune.mkPlugins plugins}/share/kak/autoload";
+  home.file.".config/kak/kak-tree.toml".text = "";
 }