"""Gera um .tar.gz deterministico (mtime 0, dono 0, ordem alfabetica, gzip sem nome/data).
uso: python3 -I pack-source.py <saida.tar.gz> <raiz> <caminho-relativo>...   (cada caminho e arquivo ou pasta sob a raiz)"""
import gzip, io, os, sys, tarfile

out, root, *paths = sys.argv[1:]
files = []
for p in paths:
    full = os.path.join(root, p)
    if os.path.isdir(full):
        for d, _, names in os.walk(full):
            files += [os.path.relpath(os.path.join(d, n), root) for n in names]
    else:
        files.append(p)
buf = io.BytesIO()
with tarfile.open(fileobj=buf, mode="w", format=tarfile.GNU_FORMAT) as tar:
    for rel in sorted(set(files)):
        info = tar.gettarinfo(os.path.join(root, rel), arcname=rel)
        info.mtime, info.uid, info.gid, info.uname, info.gname = 0, 0, 0, "", ""
        info.mode = 0o644
        with open(os.path.join(root, rel), "rb") as f:
            tar.addfile(info, f)
with open(out, "wb") as raw, gzip.GzipFile(filename="", mode="wb", fileobj=raw, mtime=0, compresslevel=9) as gz:
    gz.write(buf.getvalue())