File tree.el appears to be missing from most recent tarkit

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Downloaded: nclosemacs-2.3.tar 
2. Extracted into directory /home/tommy/nclosemacs
3. Added /home/tommy/nclosemacs/release to auto-path
4. (load-library "nclosemacs")
5. Error occurs at:
(require "tree")
The file appears to be missing.  Fails at load.

What is the expected output? What do you see instead?

What version of the product are you using? On what operating system?
nclosemacs-2.3 on Red Hat Linux, running EMACS 23.3.2
uname --a 
Linux 2.6.32-71.el6.x86_64 running on a 64 bit system.

Please provide any additional information below.

Original issue reported on code.google.com by TomBelpa...@gmail.com on 7 May 2013 at 11:31

[GoogleCodeExporter]

Although the answer migh be way too late to be useful (> 1 y!), the problem is 
caused by some experimental feature in nclos-eieio.el:

;; Experimental visual browser
;; Tue Mar 17 15:01:16 2009 -- First pass no-thrill implementation
;; Relies on the eieio class browser in `tree.el'.  We simply attach instances 
to the `x' command

Since then, eieio has been upgraded and integrated into Emacs so this whole 
nclosemacs codebase would need a major revision to see a proper integration 
with v.24 and v.25 without explicit dependency to EIEIO.

In the meantime, one could try to delete lines 275-306 at the end of 
nclos-eieio.el, delete the require 'tree invocation and recompile.

Thanks for your interest in expert system antiques!

jmc AT neurondata DOT org

Original comment by jeanmari...@gmail.com on 15 Jul 2014 at 12:31