tazdev gen-chroot {name_env} --mirror="http://people.slitaz.org/~shann/slitaz64-stuff/repo/packages/unstable/"
Ref:
82 check_mirror() {
http://hg.slitaz.org/slitaz-dev-tools/file/3a966a7b4ac9/tazdev/tazdev#l82
20 # Main mirror to push and download (ISO, rootfs. etc).
21 MIRROR="mirror.slitaz.org"
22 MIRROR_PKGS="/var/www/slitaz/mirror/packages"
23 MIRROR_SOURCES="/var/www/slitaz/mirror/sources"
http://hg.slitaz.org/slitaz-dev-tools/file/3a966a7b4ac9/tazdev/tazdev.conf#l20