Comment # 3 on bug 1190210 from Stefan Dirsch

Ok. Seems find-supplements radically changed in rpm 4.16 of TW in comparison to
rpm 4.14 in Leap 15.x

--- openSUSE_Leap_15.2-x86_64/usr/lib/rpm/find-supplements      2020-06-08
22:13:36.000000000 +0200
+++ openSUSE_Factory-x86_64/usr/lib/rpm/find-supplements        2021-06-01
10:35:46.000000000 +0200
@@ -1,14 +1,3 @@
-#!/bin/bash
+#!/bin/sh

-# This script reads filenames from STDIN and outputs any relevant provides
-# information that needs to be included in the package.
-IFS=$'\n'
-filelist=($(cat))
-
-#
-# --- Kernel module hardware identifiers
-# (e.g., modalias(pci:v0000109Ed00000878sv00000070sd0000FF01bc*sc*i*)
-[ -x /usr/lib/rpm/find-supplements.ksyms ] &&
-    printf "%s\n" "${filelist[@]}" | /usr/lib/rpm/find-supplements.ksyms "$@"
-
-exit 0
+/usr/lib/rpm/rpmdeps --define="_use_internal_dependency_generator 1"
--supplements

So, apparently find-supplements.ksyms is no longer been used. (!?!) I'm afraid
my-find-supplements needs to be rewritten. :-(