use dpkg-deb /dev/stdin instead of arpy

extract_binary_control.py

@@ -1,11 +0,0 @@
-#!/usr/bin/env python3
-
-import arpy
-import sys
-
-ar=arpy.Archive(fileobj=sys.stdin.buffer)
-
-for f in ar:
-    if f.header.name == b"control.tar.gz":
-        sys.stdout.buffer.write(f.read())
-        break

setup.sh

@@ -72,9 +72,9 @@ curl "http://binarycontrol.debian.net/?q=&path=%2Ftriggers%24&format=pkglist" \
 	| while read pkg url; do
 	echo "working on $pkg..." >&2
 	mkdir DEBIAN
-	curl --location --silent "$url" \
-		| ./extract_binary_control.py \
-		| tar -C "DEBIAN" --exclude=./md5sums -xz
+	curl --retry 2 --location --silent "$url" \
+		| dpkg-deb --ctrl-tarfile /dev/stdin \
+		| tar -C "DEBIAN" --exclude=./md5sums -x
 	if [ ! -f DEBIAN/triggers ]; then
 		rm -r DEBIAN
 		continue