gnu: Add vim-nerdtree.

* gnu/packages/vim.scm (vim-nerdtree): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/packages/vim.scm

@@ -1296,6 +1296,36 @@ by their scope.  This means that for example methods in C++ are displayed under
 the class they are defined in.")
     (license license:vim)))
 
+(define-public vim-nerdtree
+  (package
+    (name "vim-nerdtree")
+    (version "6.10.16")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/preservim/nerdtree")
+             (commit version)))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "1si8qla86ng8cffbmfrk9gss0i3912yw0f1ph4bsiq0kk837lccp"))))
+    (build-system copy-build-system)
+    (arguments
+     '(#:install-plan
+       '(("autoload" "share/vim/vimfiles/")
+         ("doc" "share/vim/vimfiles/")
+         ("lib" "share/vim/vimfiles/")
+         ("nerdtree_plugin" "share/vim/vimfiles/")
+         ("plugin" "share/vim/vimfiles/")
+         ("syntax" "share/vim/vimfiles/"))))
+    (home-page "https://github.com/preservim/nerdtree")
+    (synopsis "Tree explorer plugin for Vim")
+    (description
+     "The NERDTree is a file system explorer for the Vim editor.  Using this
+plugin, users can visually browse complex directory hierarchies, quickly open
+files for reading or editing, and perform basic file system operations.")
+    (license license:wtfpl2)))
+
 (define-public vim-nerdcommenter
   (let ((commit "a65465d321f2f8a74b2ffa540b9b87563f7e12e8")
         (revision "1"))