Script for updating Rust binaries via Cargo

cargo-update-binaries.py

#!/usr/bin/env python3

import io
import json
from packaging import version
import re
import subprocess

def get_crate_info(crate):
    with subprocess.Popen(["cargo", "info", "--json", crate], stdout = subprocess.PIPE) as proc:
        return json.load(proc.stdout)

with subprocess.Popen(["cargo", "install", "--list"], stdout = subprocess.PIPE) as proc:
    re_crate = re.compile(r"(\w+) v([\d.]+):")
    for line in io.TextIOWrapper(proc.stdout, encoding = "utf-8"):
        line = line.rstrip()
        match = re_crate.fullmatch(line)
        if match:
            crate = match[1]
            installed_version = version.parse(match[2])

            crate_info = get_crate_info(crate)
            latest_version = version.parse(crate_info["crate"]["max_version"])

            print("Found crate '{}' v{} (latest v{})".format(crate, installed_version, latest_version))
            
            if latest_version > installed_version:
                print("Updating crate '{}'...".format(crate))
                subprocess.run(["cargo", "install", "--force", crate])