Imagine if you accidentally pushed a disabling trackers in system apps button with https://github.com/MuntashirAkon/AppManager and your phone came in an unresponsive state. If you still have adb access this tool may save you lots of painfull hours.

analyze_dumpsys.py

import re
import os
import sys

if len(sys.argv) < 2:
    print("Usage:\nadb shell dumpsys package > disabled_services.txt\npython3 analyze_dumpsys.py disabled_services.txt > services.txt")
    sys.exit(1)

cwd = os.getcwd()
file_name = os.path.join(cwd, sys.argv[1])

if not os.path.isfile(file_name):
    print("File not found.")
    sys.exit(1)

with open(file_name, "r") as f:
    packages_file = f.readlines()

packages_file = packages_file[packages_file.index("Packages:\n") + 1:]

packages = {}
current_package = None
for line in packages_file:
    if line.find("Package [") != -1:
        package = re.search(r"Package \[(.*)\]", line).group(1)
        packages[package] = []
        current_package = package
    if current_package is not None:
        packages[current_package].append(line)

packages_with_activities = {"": []}
for package in packages:
    packages_with_activities[package] = []
    writing = False
    for line in packages[package]:
        if line.find("disabledComponents:") != -1:
            writing = True
            continue
        elif writing and (line.find("enabledComponents:") != -1 or line.find("User ") != -1):
            writing = False
            break
        if writing:
            packages_with_activities[package].append(line.strip())

count=0
for package in packages_with_activities:
    for activity in packages_with_activities[package]:
        print('/'.join((package, activity)))
        count+=1

print('Total number of disabled services: ', count, '\nTo start reenabling them:\nadb push services.txt /data/local/tmp/services.txt\ncat /data/local/tmp/services.txt | xargs -n1 pm enable', file=sys.stderr)