emacs-ess: fails to load R mode due to missing files

Is this a new report?

Yes

System Info

Void 6.18.36_1 x86_64 GenuineIntel notuptodate rrFF

Package(s) Affected

emacs-ess-18.10.2_5

Does a report exist for this bug with the project's home (upstream) and/or another distro?

https://github.com/emacs-ess/ESS/issues/1338

Expected behaviour

The package installs successfully via XBPS, but fails completely during Emacs initialization.

Even though load-path is correctly configured and (require 'ess-site) is defined in init.el:

cat .emacs.d/init.el 
(add-to-list 'load-path "/usr/share/emacs/site-lisp/ess/")

(require 'ess-site)

Emacs throws a file-missing error for ess-rd.el.

Actual behaviour

As can be seen in the message below, Emacs fails to initialize because it cannot open the load file ess-rd.el. The program triggers a file-missing error during startup immediately after trying to evaluate (require 'ess-site).

emacs --debug-init

Debugger entered--Lisp error: (file-missing "Cannot open load file" "No such file or directory" "ess-rd.el")
  require(essddr "ess-rd.el")
  byte-code("\300\301!\210\300\302!\210\300\301!\210\300\303!\210\300\304!\210\300\305\306\"\207" [require ess-utils ess-custom hideshow outline essddr "ess-rd.el"] 3)
  require(ess-roxy)
  byte-code("\301\302!\210\301\303!\210\301\304!\210\301\305!\210\301\306!\210\301\307!\210\301\310!\210\301\311!\210\301\312!\210\301\313!\210\301\314!\210\301\315!\210\10\316Y\203:\0\301\317!\210\10\320Y\203D\0\301\321!\210\301\207" [emacs-major-version require cl-lib compile easymenu eldoc ess-mode ess-help ess-s-lang ess-roxy ess-r-completion ess-r-syntax ess-r-package ess-trns 25 ess-r-xref 26 ess-r-flymake] 2)
  require(ess-r-mode)
  byte-code("\304\305\306\10!\"\210\304\305\306\307\310\10\"!\"\210\311\312!\210\313\314\315\10\"!\210\316\317\11\"\204+\0\304\301\307\320\10\"\"\210\311\321!\210\311\322\323\324#\203;\0\311\325!\210\311\326!\210\n\203J\0\311\327!\210\202N\0\311\330!\210\311\331!\210\311\332!\210\311\333!\210\311\334!\210\311\335!\210\313\314\336\13\"!\210\311\337!\210\311\340!\210\313\314\341\13\"!\210\311\342!\210\311\343!\210\313\344!\210\345\346!\207" [ess-lisp-directory Info-default-directory-list ess-microsoft-p ess-customize-alist add-to-list load-path file-name-as-directory expand-file-name "obsolete" require ess-utils ess-write-to-dribble-buffer format "[ess-site:] ess-lisp-directory = '%s'" locate-file "ess.info" "../doc/info/" ess-r-mode julia-mode nil no-error ess-julia ess-sp3-d ess-sp6w-d ess-sp6-d essd-els ess-stata-mode ess-sas-d ess-bugs-d ess-jags-d "[ess-site.el]: ess-customize-alist=%s \n" ess-noweb ess-swv "[ess-site.el _2_]: ess-customize-alist=%s \n" ess-mouse ess-toolbar "[ess-site:] *very* end ..." provide ess-site] 6)
  require(ess-site)
  load-with-code-conversion("/home/david/.emacs.d/init.el" "/home/david/.emacs.d/init.el" t t)
  load("/home/david/.emacs.d/init" noerror nomessage)
  #f(compiled-function () #<bytecode 0x81ca523fb55d790>)()
  #f(compiled-function () #<bytecode -0x4307d7bb01d2857>)()
  handler-bind-1(#f(compiled-function () #<bytecode -0x4307d7bb01d2857>) (error) startup--debug)
  startup--load-user-init-file(#f(compiled-function () #<bytecode 0x1e334c369b0a8a33>) #f(compiled-function () #<bytecode 0x731968ef8c7b19b>) t)
  command-line()
  normal-top-level()

Steps to reproduce

1. Install emacs-ess via XBPS.
2. Add the correct load-path configuration and (require 'ess-site) to ~/.emacs.d/init.el.
3. Launch Emacs normally.
4. The initialization fails immediately with the file-missing error.

Start by reproducing the failure with the emacs-ess-18.10.2_5 package, the load-path and require entries in ~/.emacs.d/init.el, and emacs --debug-init. Trace the require chain through ess-site, ess-r-mode, ess-roxy, and essddr, focusing on the missing ess-rd.el file; compare with upstream issue ESS#1338. Done means the package installs and (require 'ess-site) completes without the file-missing error.