abuild, buildlab, checkapk: use $APK for apk

abuild.in

@@ -2166,7 +2166,7 @@ rootbld() {
 	fi
 
 	[ "$CBUILD" = "$CHOST" ] || die "rootbld: cross-building not supported currently"
-	apk info -eq abuild-rootbld || die "rootbld: abuild-rootbld package not installed"
+	$APK info -eq abuild-rootbld || die "rootbld: abuild-rootbld package not installed"
 
 	logcmd "chroot building building $repo/$pkgname-$pkgver-r$pkgrel"
 

buildlab.in

@@ -106,8 +106,8 @@ do_chroot_action() {
 update_chroot() {
 	local path="$1"
 
-	apk --root $path --repositories "$path"/etc/apk/repositories update
-	apk --root $path --repositories "$path"/etc/apk/repositories upgrade -a
+	$APK --root $path --repositories "$path"/etc/apk/repositories update
+	$APK --root $path --repositories "$path"/etc/apk/repositories upgrade -a
 }
 
 prepare_chroot() {
@@ -139,19 +139,19 @@ prepare_chroot() {
 
 	msg "Updating package lists..."
 
-	apk --arch $buildarch --root $path --repositories "$path"/etc/apk/repositories update
+	$APK --arch $buildarch --root $path --repositories "$path"/etc/apk/repositories update
 
 	msg "Installing alpine-base..."
 
-	apk --arch $buildarch --root $path --repositories "$path"/etc/apk/repositories add --initdb alpine-base
+	$APK --arch $buildarch --root $path --repositories "$path"/etc/apk/repositories add --initdb alpine-base
 
 	msg "Installing abuild..."
 
-	apk --arch $buildarch --root $path --repositories "$path"/etc/apk/repositories add --initdb abuild
+	$APK --arch $buildarch --root $path --repositories "$path"/etc/apk/repositories add --initdb abuild
 
 	msg "Installing build-base..."
 
-	apk --arch $buildarch --root $path --repositories "$path"/etc/apk/repositories add --initdb build-base
+	$APK --arch $buildarch --root $path --repositories "$path"/etc/apk/repositories add --initdb build-base
 
 	msg "Adding abuild user..."
 

checkapk.in

@@ -15,6 +15,7 @@ if ! [ -f "$datadir/functions.sh" ]; then
 fi
 . "$datadir/functions.sh"
 
+: ${APK:="apk"}
 
 usage() {
 	cat >&2 <<-__EOF__
@@ -67,12 +68,12 @@ for i in $pkgname $subpackages; do
 	# generate a temp repositories file with only the http(s) repos
 	grep -E "^https?:" /etc/apk/repositories > $tmpdir/repositories
 
-	oldpkg=$(apk fetch --repositories-file $tmpdir/repositories --simulate 2>&1 | sed 's/^Downloading //')
+	oldpkg=$($APK fetch --repositories-file $tmpdir/repositories --simulate 2>&1 | sed 's/^Downloading //')
 	if [ "${oldpkg}" = "${pkg}" ]; then
 		die "the built package ($_pkgname) is already in the repo"
 	fi
 
-	apk fetch --quiet --repositories-file $tmpdir/repositories --stdout $_pkgname \
+	$APK fetch --quiet --repositories-file $tmpdir/repositories --stdout $_pkgname \
 		| tar -ztf - | grep -v '^\.SIGN\.' | sort > filelist-$_pkgname-old \
 		|| die "failed to download old pkg, maybe run 'apk update'?"