Joeven — Learn Autonomous AI Agents

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INDEX = {
    "httpx": ["httpcore", "certifi", "idna"],
    "httpcore": ["h11", "idna"],
    "h11": [],
    "certifi": [],
    "idna": [],
    "pytest": ["pluggy", "iniconfig"],
    "pluggy": [],
    "iniconfig": [],
}

req_lines = [
    "httpx==0.27.2",
    "pytest==8.3.2",
    "# skip comments",
    "",
    "unknown-pkg==1.0",
]

def parse_line(line):
    line = line.strip()
    if not line or line.startswith("#"):
        return None
    if "==" in line:
        name, version = line.split("==", 1)
        return name.strip(), version.strip()
    return line.strip(), None

def resolve(name):
    out = []
    stack = [name]
    seen = []
    while stack:
        pkg = stack.pop()
        if pkg in seen:
            continue
        seen.append(pkg)
        if pkg not in INDEX:
            print("not in index:", pkg)
            continue
        out.append(pkg)
        needs = INDEX[pkg]
        i = len(needs) - 1
        while i >= 0:
            stack.append(needs[i])
            i -= 1
    return out

for line in req_lines:
    parsed = parse_line(line)
    if parsed is None:
        continue
    name, version = parsed
    print("want", name, "pin", version)
    print("  pulls", resolve(name))

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