On a freshly installed debian 9.1, apt-get fails to install xemacs due to some compilation related to erlang, here is the interesting part of log:
Compiling /usr/share/xemacs21/site-lisp/erlang/erldoc.el... While compiling toplevel forms in file /usr/share/xemacs21/site-lisp/erlang/erldoc.el: !! File error (("Cannot open load file" "cl-lib")) >>Error occurred processing erldoc.el: Cannot open load file: cl-lib Compiling /usr/share/xemacs21/site-lisp/erlang/path.el... Wrote /usr/share/xemacs21/site-lisp/erlang/path.elc Done ERROR: install script from erlang-mode package failed dpkg: error processing package xemacs21-mule (--configure): subprocess installed post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of xemacs21: xemacs21 depends on xemacs21-mule (>= 21.4.24-4) | xemacs21-mule-canna-wnn (>= 21.4.24-4) | xemacs21-nomule (>= 21.4.24-4); however: Package xemacs21-mule is not configured yet. Package xemacs21-mule-canna-wnn is not installed. Package xemacs21-nomule is not installed. dpkg: error processing package xemacs21 (--configure): dependency problems - leaving unconfigured Errors were encountered while processing: xemacs21-mule xemacs21 E: Sub-process /usr/bin/dpkg returned an error code (1) Cheers Remy