As we cannot install outside the Store, and those games do not create the
needed writable files on their own, we need a wrapper script.

diff -Naur bsd-games-2.17/atc/Makefrag bsd-games-patch/atc/Makefrag
--- bsd-games-2.17/atc/Makefrag	1970-01-01 07:00:00.000000000 +0700
+++ bsd-games-patch/atc/Makefrag	2020-04-23 20:24:04.446176222 +0700
@@ -47,7 +47,8 @@
	mv atc/lex.yy.c $@

 atc_install:	atc_all
-	$(INSTALL_SCORE_GAME) atc/atc $(INSTALL_PREFIX)$(GAMESDIR)/atc
+	$(INSTALL_SCORE_GAME) wrapper $(INSTALL_PREFIX)$(GAMESDIR)/atc
+	$(INSTALL_SCORE_GAME) atc/atc $(INSTALL_PREFIX)$(GAMESDIR)/.atc-real
	$(HIDE_GAME) atc
	$(INSTALL_SCORE_FILE) $(ATC_SCOREFILE)
	$(INSTALL_MANUAL) atc/atc.6
diff -Naur bsd-games-2.17/battlestar/Makefrag bsd-games-patch/battlestar/Makefrag
--- bsd-games-2.17/battlestar/Makefrag	1970-01-01 07:00:00.000000000 +0700
+++ bsd-games-patch/battlestar/Makefrag	2020-04-23 20:24:04.482175771 +0700
@@ -32,7 +32,8 @@
 battlestar_all:	battlestar/battlestar battlestar/battlestar.6

 battlestar_install:	battlestar_all
-	$(INSTALL_SCORE_GAME) battlestar/battlestar $(INSTALL_PREFIX)$(GAMESDIR)/battlestar
+	$(INSTALL_SCORE_GAME) wrapper $(INSTALL_PREFIX)$(GAMESDIR)/battlestar
+	$(INSTALL_SCORE_GAME) battlestar/battlestar $(INSTALL_PREFIX)$(GAMESDIR)/.battlestar-real
	$(HIDE_GAME) battlestar
	$(INSTALL_MANUAL) battlestar/battlestar.6
	$(INSTALL_SCORE_FILE) $(BATTLESTAR_SCOREFILE)
diff -Naur bsd-games-2.17/canfield/canfield/Makefrag bsd-games-patch/canfield/canfield/Makefrag
--- bsd-games-2.17/canfield/canfield/Makefrag	1970-01-01 07:00:00.000000000 +0700
+++ bsd-games-patch/canfield/canfield/Makefrag	2020-04-23 20:24:04.522175270 +0700
@@ -31,7 +31,8 @@
 canfield_canfield_all:	canfield/canfield/canfield canfield/canfield/canfield.6

 canfield_canfield_install: canfield_canfield_all
-	$(INSTALL_SCORE_GAME) canfield/canfield/canfield $(INSTALL_PREFIX)$(GAMESDIR)/canfield
+	$(INSTALL_SCORE_GAME) wrapper $(INSTALL_PREFIX)$(GAMESDIR)/canfield
+	$(INSTALL_SCORE_GAME) canfield/canfield/canfield $(INSTALL_PREFIX)$(GAMESDIR)/.canfield-real
	$(HIDE_GAME) canfield
	$(INSTALL_MANUAL) canfield/canfield/canfield.6
	$(INSTALL_SCORE_FILE) $(CANFIELD_SCOREFILE)
diff -ur bsd-games-2.17.orig/canfield/cfscores/Makefrag bsd-games-2.17/canfield/cfscores/Makefrag
--- bsd-games-2.17.orig/canfield/cfscores/Makefrag	1970-01-01 07:00:01.000000000 +0700
+++ bsd-games-2.17/canfield/cfscores/Makefrag	2020-08-06 12:20:10.592076477 +0700
@@ -32,6 +32,7 @@
 canfield_cfscores_all:	canfield/cfscores/cfscores

 canfield_cfscores_install:	canfield_cfscores_all
-	$(INSTALL_BINARY) canfield/cfscores/cfscores $(INSTALL_PREFIX)$(GAMESDIR)/cfscores
+	$(INSTALL_BINARY) wrapper $(INSTALL_PREFIX)$(GAMESDIR)/cfscores
+	$(INSTALL_BINARY) canfield/cfscores/cfscores $(INSTALL_PREFIX)$(GAMESDIR)/.cfscores-real
	$(HIDE_GAME) cfscores
	$(INSTALL_MANUAL) canfield.6 cfscores.6
diff -Naur bsd-games-2.17/cribbage/Makefrag bsd-games-patch/cribbage/Makefrag
--- bsd-games-2.17/cribbage/Makefrag	1970-01-01 07:00:00.000000000 +0700
+++ bsd-games-patch/cribbage/Makefrag	2020-04-23 20:24:04.534175120 +0700
@@ -31,7 +31,8 @@
 cribbage_all:	cribbage/cribbage cribbage/cribbage.n cribbage/cribbage.6

 cribbage_install:	cribbage_all
-	$(INSTALL_SCORE_GAME) cribbage/cribbage $(INSTALL_PREFIX)$(GAMESDIR)/cribbage
+	$(INSTALL_SCORE_GAME) wrapper $(INSTALL_PREFIX)$(GAMESDIR)/cribbage
+	$(INSTALL_SCORE_GAME) cribbage/cribbage $(INSTALL_PREFIX)$(GAMESDIR)/.cribbage-real
	$(HIDE_GAME) cribbage
	$(INSTALL_DATA) cribbage/cribbage.n $(INSTALL_PREFIX)$(CRIBBAGE_INSTRFILE)
	$(INSTALL_SCORE_FILE) $(CRIBBAGE_SCOREFILE)
diff -Naur bsd-games-2.17/hack/Makefrag bsd-games-patch/hack/Makefrag
--- bsd-games-2.17/hack/Makefrag	1970-01-01 07:00:00.000000000 +0700
+++ bsd-games-patch/hack/Makefrag	2020-04-23 20:24:04.590174419 +0700
@@ -53,7 +53,8 @@
 hack/hack.zap.d hack/rnd.d:	hack/hack.onames.h

 hack_install:	hack_all
-	$(INSTALL_SCORE_GAME) hack/hack $(INSTALL_PREFIX)$(GAMESDIR)/hack
+	$(INSTALL_SCORE_GAME) wrapper $(INSTALL_PREFIX)$(GAMESDIR)/hack
+	$(INSTALL_SCORE_GAME) hack/hack $(INSTALL_PREFIX)$(GAMESDIR)/.hack-real
	$(HIDE_GAME) hack
	$(INSTALL_HACK_DIR) $(INSTALL_PREFIX)$(HACK_DIR)
	set -e; for f in data help hh rumors; do $(INSTALL_DATA) hack/$$f $(INSTALL_PREFIX)$(HACK_DIR)/$$f; done
diff -Naur bsd-games-2.17/phantasia/Makefrag bsd-games-patch/phantasia/Makefrag
--- bsd-games-2.17/phantasia/Makefrag	1970-01-01 07:00:00.000000000 +0700
+++ bsd-games-patch/phantasia/Makefrag	2020-04-23 20:24:04.650173667 +0700
@@ -38,7 +38,8 @@
	touch phantasia/scorefiles.stamp

 phantasia_install:	phantasia_all
-	$(INSTALL_SCORE_GAME) phantasia/phantasia $(INSTALL_PREFIX)$(GAMESDIR)/phantasia
+	$(INSTALL_SCORE_GAME) wrapper $(INSTALL_PREFIX)$(GAMESDIR)/phantasia
+	$(INSTALL_SCORE_GAME) phantasia/phantasia $(INSTALL_PREFIX)$(GAMESDIR)/.phantasia-real
	$(HIDE_GAME) phantasia
	(set -e; for f in $(phantasia_VFILES1); do \
	    cp phantasia/$$f $(INSTALL_PREFIX)$(PHANTASIA_DIR)/$$f; \
diff -Naur bsd-games-2.17/robots/Makefrag bsd-games-patch/robots/Makefrag
--- bsd-games-2.17/robots/Makefrag	1970-01-01 07:00:00.000000000 +0700
+++ bsd-games-patch/robots/Makefrag	2020-04-23 20:24:04.702173016 +0700
@@ -32,7 +32,8 @@
 robots_all:	robots/robots robots/robots.6

 robots_install:	robots_all
-	$(INSTALL_SCORE_GAME) robots/robots $(INSTALL_PREFIX)$(GAMESDIR)/robots
+	$(INSTALL_SCORE_GAME) wrapper $(INSTALL_PREFIX)$(GAMESDIR)/robots
+	$(INSTALL_SCORE_GAME) robots/robots $(INSTALL_PREFIX)$(GAMESDIR)/.robots-real
	$(HIDE_GAME) robots
	$(INSTALL_SCORE_FILE) $(ROBOTS_SCOREFILE)
	$(INSTALL_MANUAL) robots/robots.6
diff -Naur bsd-games-2.17/sail/Makefrag bsd-games-patch/sail/Makefrag
--- bsd-games-2.17/sail/Makefrag	1970-01-01 07:00:00.000000000 +0700
+++ bsd-games-patch/sail/Makefrag	2020-04-23 20:24:04.710172917 +0700
@@ -31,7 +31,8 @@
 sail_all:	sail/sail sail/sail.6

 sail_install:	sail_all
-	$(INSTALL_SCORE_GAME) sail/sail $(INSTALL_PREFIX)$(GAMESDIR)/sail
+	$(INSTALL_SCORE_GAME) wrapper $(INSTALL_PREFIX)$(GAMESDIR)/sail
+	$(INSTALL_SCORE_GAME) sail/sail $(INSTALL_PREFIX)$(GAMESDIR)/.sail-real
	$(HIDE_GAME) sail
	$(INSTALL_SCORE_FILE) $(SAIL_SCOREFILE)
	$(INSTALL_SAIL_DIR) $(INSTALL_PREFIX)$(SAIL_DIR)
diff -Naur bsd-games-2.17/snake/snake/Makefrag bsd-games-patch/snake/snake/Makefrag
--- bsd-games-2.17/snake/snake/Makefrag	1970-01-01 07:00:00.000000000 +0700
+++ bsd-games-patch/snake/snake/Makefrag	2020-04-23 20:24:04.722172766 +0700
@@ -31,7 +31,8 @@
 snake_snake_all:	snake/snake/snake snake/snake/snake.6

 snake_snake_install:	snake_snake_all
-	$(INSTALL_SCORE_GAME) snake/snake/snake $(INSTALL_PREFIX)$(GAMESDIR)/snake
+	$(INSTALL_SCORE_GAME) wrapper $(INSTALL_PREFIX)$(GAMESDIR)/snake
+	$(INSTALL_SCORE_GAME) snake/snake/snake $(INSTALL_PREFIX)$(GAMESDIR)/.snake-real
	$(HIDE_GAME) snake
	$(INSTALL_SCORE_FILE) $(SNAKE_SCOREFILE)
	$(INSTALL_SCORE_FILE) $(SNAKE_RAWSCOREFILE)
--- bsd-games-2.17.orig/snake/snscore/Makefrag	1970-01-01 07:00:01.000000000 +0700
+++ bsd-games-2.17/snake/snscore/Makefrag	2020-08-06 12:33:09.636089394 +0700
@@ -32,6 +32,7 @@
 snake_snscore_all:	snake/snscore/snscore

 snake_snscore_install:	snake_snscore_all
-	$(INSTALL_BINARY) snake/snscore/snscore $(INSTALL_PREFIX)$(GAMESDIR)/snscore
+	$(INSTALL_BINARY) wrapper $(INSTALL_PREFIX)$(GAMESDIR)/snscore
+	$(INSTALL_BINARY) snake/snscore/snscore $(INSTALL_PREFIX)$(GAMESDIR)/.snscore-real
	$(HIDE_GAME) snscore
	$(INSTALL_MANUAL) snake.6 snscore.6
diff -Naur bsd-games-2.17/tetris/Makefrag bsd-games-patch/tetris/Makefrag
--- bsd-games-2.17/tetris/Makefrag	1970-01-01 07:00:00.000000000 +0700
+++ bsd-games-patch/tetris/Makefrag	2020-04-23 20:24:04.734172616 +0700
@@ -32,7 +32,8 @@
 tetris_all:	tetris/tetris tetris/tetris.6

 tetris_install:	tetris_all
-	$(INSTALL_SCORE_GAME) tetris/tetris $(INSTALL_PREFIX)$(GAMESDIR)/tetris-bsd
+	$(INSTALL_SCORE_GAME) wrapper $(INSTALL_PREFIX)$(GAMESDIR)/tetris-bsd
+	$(INSTALL_SCORE_GAME) tetris/tetris $(INSTALL_PREFIX)$(GAMESDIR)/.tetris-bsd-real
	$(HIDE_GAME) tetris-bsd
	$(INSTALL_SCORE_FILE) $(TETRIS_SCOREFILE)
	ln -f tetris/tetris.6 tetris/tetris-bsd.6
diff -Naur bsd-games-2.17/wrapper bsd-games-patch/wrapper
--- bsd-games-2.17/wrapper	1970-01-01 07:00:00.000000000 +0700
+++ bsd-games-patch/wrapper	2020-04-23 20:24:37.153766719 +0700
@@ -0,0 +1,91 @@
+#!/bin/sh
+# This file works around limitations of our read-only Store.
+
+set -e
+
+check_empty_files () {
+    # those start empty
+    for f in ${@}
+    do
+        if [[ ! -f ${f} ]]
+        then
+            touch      ${f}
+            echo "$(pwd)/${f} RESTORED"
+        fi
+    done
+}
+check_data_files () {
+    # those start with some initial data
+    for f in ${@}
+    do
+        if [[ ! -f ${f} ]]
+        then
+            cp STATIC_DATA/${game}/${f} ${f}
+            chmod u+w ${f}
+            echo "$(pwd)/${f} RESTORED"
+        fi
+    done
+}
+visit_dir () {
+    mkdir -p ${1}
+    cd ${1}
+}
+exit_with_variable_error () {
+    variables="${1}${2:+ or ${2}}"
+    echo "Guix: Please set up the ${variables} variable."
+    echo "Examples:"
+    echo "   export ${1}=/var/multiplayer"
+    echo "   export ${2:-${1}}=~/.local/share/bsd-games"
+    echo "You can place this in ~/.bashrc or a similar file for Your shell."
+    echo "For multiplayer this directory should be writable for all players."
+    exit 1
+}
+
+game=$(basename $0)
+if [[ ${game} == "hack" ]]
+then
+    if   [[ -n ${HACKDIR} ]];       then visit_dir "${HACKDIR}"
+    elif [[ -n ${BSD_GAMES_DIR} ]]; then visit_dir "${BSD_GAMES_DIR}/hack"
+    else exit_with_variable_error "HACKDIR" "BSD_GAMES_DIR"
+    fi
+else
+    if [[ -n ${BSD_GAMES_DIR} ]]; then visit_dir "${BSD_GAMES_DIR}"
+    else exit_with_variable_error "BSD_GAMES_DIR"
+    fi
+fi
+
+case ${game} in
+    ### Games with score-files
+    atc)
+        check_empty_files "atc_score";;
+    battlestar)
+        check_empty_files "battlestar.log";;
+    canfield)
+        check_empty_files "cfscores";;
+    cribbage)
+        check_empty_files "criblog";;
+    robots)
+        check_empty_files "robots_roll";;
+    snake)
+        check_empty_files "snakerawscores" "snake.log";;
+    tetris)
+        check_empty_files "tetris-bsd.scores";;
+    ### Games with saved state
+    hack)
+        check_empty_files "record" "perm"
+        check_data_files "data" "help" "hh" "rumors"
+        visit_dir "save"
+        cd ../../;;
+    phantasia)
+        visit_dir "phantasia"
+        check_empty_files "characs" "gold" "lastdead"\
+                          "mess" "motd" "scoreboard" "void"
+        check_data_files "monsters"
+        cd ../;;
+    sail)
+        visit_dir "sail"
+        check_empty_files "log" "syncfile"
+        cd ../;;
+esac
+
+exec .${game}-real ${@}