main/lua-alt-getopt: use install_if

main/lua-alt-getopt/APKBUILD

 # Maintainer: Natanael Copa <ncopa@alpinlinux.org>
+_luaversions="5.1 5.2"
 pkgname=lua-alt-getopt
 pkgver=0.7.0
-pkgrel=4
+pkgrel=5
 pkgdesc="Lua module for processing options similar to getopt_long(3)"
 url="http://luaforge.net/projects/alt-getopt/"
 arch="noarch"
@@ -9,7 +10,11 @@ license="MIT"
 depends="lua5.1-alt-getopt lua5.2-alt-getopt"
 makedepends=
 install=
-subpackages="lua5.1-alt-getopt:_51 lua5.2-alt-getopt:_52"
+subpackages=""
+for _v in $_luaversions; do
+	makedepends="$makedepends lua$_v-dev"
+	subpackages="$subpackages lua$_v-alt-getopt:split_${_v/./_}"
+done
 source="http://mova.org/~cheusov/pub/lua_alt_getopt/lua-alt-getopt-$pkgver.tar.gz"
 
 _builddir="$srcdir"/$pkgname-$pkgver
@@ -23,22 +28,29 @@ build() {
 
 package() {
 	cd "$_builddir"
-	mkdir -p "$pkgdir"/usr/share/lua/5.1 "$pkgdir"/usr/share/lua/5.2
-	install -Dm644 alt_getopt.lua "$pkgdir"/usr/share/lua/5.2/alt_getopt.lua
-	ln -s ../5.2/alt_getopt.lua "$pkgdir"/usr/share/lua/5.1/alt_getopt.lua
+	for _i in $_luaversions; do
+		mkdir -p "$pkgdir"/usr/share/lua/$_i
+		install -Dm644 alt_getopt.lua \
+			"$pkgdir"/usr/share/lua/$_i/alt_getopt.lua \
+			|| return 1
+	done
 }
 
-_52() {
-        depends=""
-        mkdir -p "$subpkgdir"/usr/share/lua/
-        mv "$pkgdir"/usr/share/lua/5.2 "$subpkgdir"/usr/share/lua/
+_split() {
+	local d= _ver=$1
+	pkgdesc="$pkgdesc for Lua $_ver"
+	install_if="lua$_ver $pkgname=$pkgver-r$pkgrel"
+	depends=
+	for d in usr/lib/lua usr/share/lua; do
+		if [ -d "$pkgdir"/$d/$_ver ]; then
+			mkdir -p "$subpkgdir"/$d
+			mv "$pkgdir"/$d/$_ver "$subpkgdir"/$d/ || return 1
+		fi
+	done
 }
 
-_51() {
-        replaces="lua-alt-getopt"
-        depends="lua5.2-alt-getopt"
-        mkdir -p "$subpkgdir"/usr/share/lua/
-        mv "$pkgdir"/usr/share/lua/5.1 "$subpkgdir"/usr/share/lua/
-}
 
+for _v in $_luaversions; do
+	eval "split_${_v/./_}() { _split $_v; }"
+done
 md5sums="f504578b1287ea02759add231b972812  lua-alt-getopt-0.7.0.tar.gz"