psgml 1.2.1-5 is not working properly with XEmacs. It was not compiled
for/by XEmacs but rather emacs (or a file was forgotten)

the psgml-lucid.elc file is missing which prevents importing the emacs mode
under XEmacs.

the .elc files of the rpm are :
/usr/share/emacs/site-lisp/psgml/psgml-api.elc
/usr/share/emacs/site-lisp/psgml/psgml-charent.elc
/usr/share/emacs/site-lisp/psgml/psgml-dtd.elc
/usr/share/emacs/site-lisp/psgml/psgml-edit.elc
/usr/share/emacs/site-lisp/psgml/psgml-info.elc
/usr/share/emacs/site-lisp/psgml/psgml-other.elc
/usr/share/emacs/site-lisp/psgml/psgml-parse.elc
/usr/share/emacs/site-lisp/psgml/psgml.elc

when using psgml 1.2.1 from the original archive, installed with make
install-xemacs, I get :

/usr/local/share/emacs/site-lisp/psgml-api.elc
/usr/local/share/emacs/site-lisp/psgml-charent.elc
/usr/local/share/emacs/site-lisp/psgml-dtd.elc
/usr/local/share/emacs/site-lisp/psgml-edit.elc
/usr/local/share/emacs/site-lisp/psgml-info.elc
/usr/local/share/emacs/site-lisp/psgml-lucid.elc
/usr/local/share/emacs/site-lisp/psgml-parse.elc
/usr/local/share/emacs/site-lisp/psgml.elc

This seems to cause a problem for
/usr/local/share/emacs/site-lisp/psgml-lucid.elc and
/usr/share/emacs/site-lisp/psgml/psgml-other.elc that seems specific to
each installation.