bug#73325: 29.3; Compilation error of psgml-1.3.5 on GNU ELPA

[Lin Jian]

Compilation error:

...
sgmldecl/fum.el:216:2: Error: Cannot open load file: No such file or
directory, fum
...
Error: file-missing
("/nix/store/hash-emacs-psgml-1.3.5/share/emacs/site-lisp/elpa/psgml-1.3.5/sgmldecl/fum.el"
"Cannot open load file" "No such file or directory" "fum")
...


Full log: https://hydra.nixos.org/build/271291118/nixlog/1

README of GNU ELPA says:
> ... bug-gnu-emacs@gnu.org, since that's where people will report bugs
> about your package.

I hope this is the right place to report this.