configure: unindex removed packages

For packages reported by xbps-checkvers as removed, generated makefile
finds files matching <pkgversion>.<arch>.xbps. This is needed to know
where is repodata in which package is indexed (path may contain
multilib, aarch64, nonfree subdirectories). Then, xbps-rindex is called
to remove package from stage index. Then, xbps-repodb needs to remove
package from public index when no other package depend on it. Finally,
xbps-rindex -r will remove package file.

Author: Chocimier

.gitignore

@@ -1,5 +1,9 @@
 Makefile
 tobuild
 built
+toremove
+removed
 pkgs.txt
+pkgs-removed.txt
 repo-checkvers.txt
+repo-checkvers-remove.txt

README

@@ -23,7 +23,11 @@ targets in the generated "tobuild" subdirectory.  Once a package has been built,
 a small file is created into the "built" subdirectory in order to tell Make not
 to build it again.
 
-Every time you run './configure', those two subdirectories are reset, so you
+For packages listed by xbps-checkvers as removed, Make removes binary packages
+and unindexes them. Directiories "toremove" and "removed" are used analogically
+to "tobuild" and "built".
+
+Every time you run './configure', those four subdirectories are reset, so you
 cannot interrupt a build, run './configure', and resume properly.  In order to
 resume a build in these kinds of circumstances, you must completely remove
 'repo-checkvers.txt', so that ./configure can detect what has already been

configure

@@ -5,6 +5,7 @@ CFG_CMDLINE=
 CFG_CROSS=
 CFG_REPO=
 CROSS_ARCH=
+PKG_ARCH=
 DISTDIR=
 MASTERDIR=
 HOSTDIR=
@@ -13,6 +14,7 @@ XSC=
 _append=""
 RCV=`command -v xbps-checkvers 2>/dev/null`
 RCV_F="repo-checkvers.txt"
+RCV_FR="repo-checkvers-remove.txt"
 TOBUILD=
 _TOBUILD=
 USAGE="Usage: $0 [-a cross-arch] [-CN] [-R repo] [-d|-m|-h dir]"
@@ -44,7 +46,7 @@ while getopts a:Cc:d:Nm:th:vR: OPT; do
 		exit 0
 		;;
 	C)
-		rm -rf tobuild built
+		rm -rf tobuild built toremove removed
 		rm -f *.txt Makefile
 		exit 0
 		;;
@@ -90,6 +92,7 @@ shift $(($OPTIND - 1))
 : ${MASTERDIR:=$DISTDIR/masterdir}
 : ${HOSTDIR:=$DISTDIR/hostdir}
 
+PKG_ARCH=${CROSS_ARCH:-$(xbps-uhelper -r "$MASTERDIR" arch)}
 SRCPKGS=$DISTDIR/srcpkgs
 XBPS_SRCPKGDIR=$SRCPKGS
 
@@ -99,17 +102,23 @@ if [ -n "$CFG_CROSS" ]; then
 	export XBPS_TARGET_ARCH=$CROSS_ARCH
 fi
 
-RCV_CMD_LINE="$RCV $CFG_REPO --distdir=${DISTDIR} ${*}"
-printf "INFO: Getting list of updates, please wait...\n"
-printf "INFO: Running '$RCV_CMD_LINE' (${CROSS_ARCH:-native}) ...\n"
+run_rcv() {
+	local file=$1 flags=$2
+	RCV_CMD_LINE="$RCV $flags $CFG_REPO --distdir=${DISTDIR} ${*}"
+	printf "INFO: Getting list of updates, please wait...\n"
+	printf "INFO: Running '$RCV_CMD_LINE' (${CROSS_ARCH:-native}) ...\n"
 
-[ -f $RCV_F ] && _append="-a"
-$RCV_CMD_LINE | tee ${_append} $RCV_F
-rval=${PIPESTATUS[0]}
-if [ $rval -ne 0 ]; then
-	echo "ERROR: xbps-checkvers exited with an error: $rval"
-	exit 1
-fi
+	_append=""
+	[ -f $file ] && _append="-a"
+	$RCV_CMD_LINE | tee ${_append} $file
+	rval=${PIPESTATUS[0]}
+	if [ $rval -ne 0 ]; then
+		echo "ERROR: xbps-checkvers exited with an error: $rval"
+		exit 1
+	fi
+}
+
+run_rcv $RCV_F
 
 xbps-uhelper pkgmatch "xbps-$($RCV -V | cut -d' ' -f2)_1" 'xbps>=0.54_1'
 case "$?" in
@@ -123,9 +132,16 @@ case "$?" in
 	;;
 esac
 
+RCV_REMOVED=--removed
+if $RCV -h 2>&1 | grep -q -e $RCV_REMOVED; then
+	run_rcv $RCV_FR $RCV_REMOVED
+
+	cut -d' ' -f1-2 "$RCV_FR" >pkgs-removed.txt
+fi
+
 printf "INFO: Creating source targets...\n"
-rm -rf tobuild built
-mkdir -p tobuild built
+rm -rf tobuild built toremove removed
+mkdir -p tobuild built toremove removed
 for p in `cat pkgs.txt`; do
 	if [ -f "$SRCPKGS/$p/template" ]; then
 		$XSC show-avail $p 2>/dev/null
@@ -134,8 +150,14 @@ for p in `cat pkgs.txt`; do
 		fi
 	fi
 done
+[ -f pkgs-removed.txt ] && cat pkgs-removed.txt | while read p old; do
+	if ! [ -f "$SRCPKGS/$p/template" ]; then
+		touch toremove/$p-$old
+	fi
+done
 
 _TOBUILD="`find tobuild -type f`"
+TOREMOVE="`find toremove -type f -printf '%f '`"
 
 concat() {
 	local found=0
@@ -192,7 +214,10 @@ printf "# Generated by configure, do not modify.\n\n"		>> Makefile
 printf "PKGS = $TOBUILD\n"					>> Makefile
 printf "TOBUILD = \$(patsubst %%,tobuild/%%,\$(PKGS))\n"	>> Makefile
 printf "BUILT = \$(patsubst tobuild/%%,built/%%,\$(TOBUILD))\n\n"	>> Makefile
-printf "all: \$(BUILT)\n"					>> Makefile
+printf "PKGS_REMOVED = $TOREMOVE\n"					>> Makefile
+printf "TOREMOVE = \$(patsubst %%,toremove/%%,\$(PKGS_REMOVED))\n"	>> Makefile
+printf "REMOVED = \$(patsubst toremove/%%,removed/%%,\$(TOREMOVE))\n\n"	>> Makefile
+printf "all: \$(BUILT) \$(REMOVED)\n"					>> Makefile
 printf "\t@echo \"[Done]\"\n\n"					>> Makefile
 printf "print_pkgs:\n"						>> Makefile
 printf "\t@echo \$(PKGS)\n\n"					>> Makefile
@@ -201,6 +226,11 @@ printf "\t@echo \"[xbps-src]\t\${@F}\"\n"			>> Makefile
 printf "\t@( $XSC pkg \${@F}; rval=\$\$?; [ \$\$rval -eq 2 ] && exit 0 || exit \$\$rval )\n"	>> Makefile
 printf "\t@touch \$@\n"						>> Makefile
 printf "\t@rm tobuild/\${@F}\n\n"				>> Makefile
+printf "removed/%%: toremove/%%\n"					>> Makefile
+printf "\t@echo \"[xbps-rindex --remove --stage]\t\${@F}\"\n"			>> Makefile
+printf "\t@find \"$HOSTDIR/binpkgs\" -name \${@F}.$PKG_ARCH.xbps -exec env ${CROSS_ARCH:+XBPS_TARGET_ARCH=$CROSS_ARCH} xbps-rindex --remove --stage '{}' ';'\n"	>> Makefile
+printf "\t@touch \$@\n"						>> Makefile
+printf "\t@rm toremove/\${@F}\n\n"				>> Makefile
 
 
 printf "INFO: Finding and adding dependencies...\n"
@@ -228,9 +258,14 @@ for p in $TOBUILD; do
 	printf "built/$p: $deps\n"				>> Makefile
 done
 
+for p in $TOREMOVE; do
+	printf "removed/$p:\n"				>> Makefile
+done
+
 printf "\n"							>> Makefile
 printf "clean:\n"						>> Makefile
 printf "\t@rm -f built/*\n"					>> Makefile
+printf "\t@rm -f removed/*\n"					>> Makefile
 printf "\t@echo \"[Clean]\"\n\n"				>> Makefile
 printf ".PHONY: all print_pkgs clean\n"				>> Makefile