plist_pp.py

import plistlib, pprint, sys, uuid

with open(sys.argv[1], "rb") as plist:
    plist = plistlib.load(plist)

assert plist["$archiver"] == "NSKeyedArchiver"
objs = plist["$objects"]

def decode(val):
    if isinstance(val, dict):
        val = {k: decode(v) for k, v in val.items()}
        match val.get("$class", {}).get("$classname"):
            case "NSString" | "NSMutableString":
                return val["NS.string"]
            case "NSArray" | "NSMutableArray":
                return val["NS.objects"]
            case "NSDictionary" | "NSMutableDictionary":
                return dict(zip(val["NS.keys"], val["NS.objects"], strict=True))
            case "NSUUID":
                return uuid.UUID(bytes=val["NS.uuidbytes"])
            case "NSNull":
                return None
        return val
    if isinstance(val, list):
        return [decode(i) for i in val]
    if isinstance(val, plistlib.UID):
        return decode(objs[val])
    return val

top = decode(plist["$top"])
pprint.pprint(top, width=200, compact=True)