diff -Nru NetHack-3.6.7.orig/sys/unix/Makefile.top NetHack-3.6.7/sys/unix/Makefile.top
--- NetHack-3.6.7.orig/sys/unix/Makefile.top	2023-02-15 22:52:57.000000000 +0100
+++ NetHack-3.6.7/sys/unix/Makefile.top	2023-10-08 15:09:43.658440386 +0200
@@ -19,20 +19,20 @@
 # MAKE = make
 
 # make NetHack
-#PREFIX	 = /usr
+PREFIX	 = /usr
 GAME     = nethack
 # GAME     = nethack.prg
-#GAMEUID  = games
-#GAMEGRP  = bin
+GAMEUID  = bin
+GAMEGRP  = games
 
 # Permissions - some places use setgid instead of setuid, for instance
 # See also the option "SECURE" in include/config.h
-#GAMEPERM = 04755
+GAMEPERM = 02755
 FILEPERM = 0644
-# VARFILEPERM = 0644
+VARFILEPERM = 0644
 EXEPERM  = 0755
 DIRPERM  = 0755
-# VARDIRPERM = 0755
+VARDIRPERM = 0755
 
 # VARDIR may also appear in unixconf.h as "VAR_PLAYGROUND" else HACKDIR
 #
@@ -41,15 +41,17 @@
 # therefore there should not be anything in HACKDIR that you want to keep
 # (if there is, you'll have to do the installation by hand or modify the
 # instructions)
-#HACKDIR  = $(PREFIX)/games/lib/$(GAME)dir
-#VARDIR  = $(HACKDIR)
+HACKDIR  = $(ROOT)/$(PREFIX)/lib/$(GAME)
+CLIENT_HACKDIR = $(PREFIX)/lib/$(GAME)
+VARDIR  = $(ROOT)/var/games/nethack
+INSTDIR = $(HACKDIR)
 # Where nethack.sh in installed.  If this is not defined, the wrapper is not used.
-#SHELLDIR = $(PREFIX)/games
+SHELLDIR = $(ROOT)/$(PREFIX)/bin
 
 # per discussion in Install.X11 and Install.Qt
 #VARDATND = 
 # VARDATND = x11tiles NetHack.ad pet_mark.xbm pilemark.xbm
-# VARDATND = x11tiles NetHack.ad pet_mark.xbm pilemark.xbm rip.xpm
+VARDATND = x11tiles NetHack.ad pet_mark.xbm pilemark.xbm rip.xpm
 # for Atari/Gem
 # VARDATND = nh16.img title.img GEM_RSC.RSC rip.img
 # for BeOS
@@ -207,7 +209,7 @@
 	cp util/recover $(INSTDIR)
 	-if test -n '$(SHELLDIR)'; then rm -f $(SHELLDIR)/$(GAME); fi
 	if test -n '$(SHELLDIR)'; then \
-		sed -e 's;/usr/games/lib/nethackdir;$(HACKDIR);' \
+		sed -e 's;/usr/games/lib/nethackdir;$(CLIENT_HACKDIR);' \
 		-e 's;HACKDIR/nethack;HACKDIR/$(GAME);' \
 		< sys/unix/nethack.sh \
 		> $(SHELLDIR)/$(GAME) ; fi