fixed nspawn failing to upgrade chroot due to mirror timeout

main.go

@@ -492,8 +492,13 @@ func (b *BuildManager) syncWorker() {
 		// fetch updates between sync runs
 		b.alpmMutex.Lock()
 		check(alpmHandle.Release())
-		setupChroot()
-		var err error
+		err := setupChroot()
+		for err != nil {
+			log.Warningf("Unable to upgrade chroot, trying again later.")
+			time.Sleep(time.Minute)
+			err = setupChroot()
+		}
+
 		alpmHandle, err = initALPM(filepath.Join(conf.Basedir.Chroot, pristineChroot), filepath.Join(conf.Basedir.Chroot, pristineChroot, "/var/lib/pacman"))
 		check(err)
 		b.alpmMutex.Unlock()
@@ -614,7 +619,10 @@ func main() {
 		exit:      false,
 	}
 
-	setupChroot()
+	err = setupChroot()
+	if err != nil {
+		log.Fatalf("Unable to setup chroot: %v", err)
+	}
 	syncMarchs()
 
 	alpmHandle, err = initALPM(filepath.Join(conf.Basedir.Chroot, pristineChroot), filepath.Join(conf.Basedir.Chroot, pristineChroot, "/var/lib/pacman"))

utils.go

@@ -423,14 +423,14 @@ func genSRCINFO(pkgbuild string) (*srcinfo.Srcinfo, error) {
 	return info, nil
 }
 
-func setupChroot() {
+func setupChroot() error {
 	if _, err := os.Stat(filepath.Join(conf.Basedir.Chroot, pristineChroot)); err == nil {
 		//goland:noinspection SpellCheckingInspection
 		cmd := exec.Command("arch-nspawn", filepath.Join(conf.Basedir.Chroot, pristineChroot), "pacman", "-Syuu", "--noconfirm")
 		res, err := cmd.CombinedOutput()
 		log.Debug(string(res))
 		if err != nil {
-			log.Fatalf("[NSPAWN] Unable to update chroot: %v\n%s", err, string(res))
+			return fmt.Errorf("Unable to update chroot: %v\n%s", err, string(res))
 		}
 	} else if os.IsNotExist(err) {
 		err := os.MkdirAll(conf.Basedir.Chroot, os.ModePerm)
@@ -440,11 +440,12 @@ func setupChroot() {
 		res, err := cmd.CombinedOutput()
 		log.Debug(string(res))
 		if err != nil {
-			log.Fatalf("[MKCHROOT] Unable to create chroot: %v\n%s", err, string(res))
+			return fmt.Errorf("Unable to create chroot: %v\n%s", err, string(res))
 		}
 	} else {
-		check(err)
+		return err
 	}
+	return nil
 }
 
 func getDBPkgFromPkgfile(pkg string) (*ent.DbPackage, error) {