import toml
import subprocess as SP
import os


def set_version(rev=None):
    with open("Cargo.toml") as fh:
        cargo = toml.loads(fh.read())
    cargo["dependencies"]["pyo3"]["rev"] = rev
    if rev is None:
        del cargo["dependencies"]["pyo3"]["rev"]
    with open("Cargo.toml", "w") as fh:
        toml.dump(cargo, fh)


for commit in open("ch.txt").readlines():
    set_version(commit.strip())
    if os.system("cargo check") == 0:
        break