Add tool to fetch config from Factory

Makefile

@@ -0,0 +1,7 @@
+_config: getconfig
+	./getconfig
+
+pull:
+	git submodule foreach git pull --ff-only
+
+.PHONY: pull

_pbuild

@@ -1,6 +1,5 @@
 <pbuild>
   <preset name="Tumbleweed" default>
-    <config>tumbleweed</config>
     <repo>config:</repo>
   </preset>
 </pbuild>

getconfig

@@ -0,0 +1,23 @@
+#!/bin/bash
+set -e
+version=$(curl -sf https://download.opensuse.org/history/latest)
+curl -s -f https://api.opensuse.org/public/source/openSUSE:Factory/_config > _config.factory
+curl -s -f https://api.opensuse.org/public/source/openSUSE:Factory:Rings:0-Bootstrap/_config > _config.ring0
+cat > _config.new << EOF
+%define _project openSUSE:Factory:Rings:0-Bootstrap
+
+# for glibc
+%define disable_32bit 1
+Macros:
+%disable_32bit 1
+:Macros
+
+EOF
+cat _config.factory _config.ring0 >> _config.new
+sed -i -e "/^RepoURL:/s,/tumbleweed,/history/$version/tumbleweed," _config.new
+
+if [ -e _config ] && cmp -s _config.new _config; then
+	rm _config.new
+else
+	mv _config.new _config
+fi

removerepo

@@ -0,0 +1,2 @@
+#!/bin/bash
+sed -i -e 's/^RepoURL:/#RepoURL:/' _config