Homebrew: make a bottle dependent-only

brew-make-dependent-only

#!/usr/bin/env python3

import json
import sys
import os

kvp = (("installed_as_dependency", True), ("installed_on_request", False))

for i in sys.argv[1:]:
    filename = f"/usr/local/opt/{i}/INSTALL_RECEIPT.json"
    with open(filename, "r", encoding="utf-8") as f:
        j = json.load(f)
    if "installed_as_dependency" not in j or "installed_on_request" not in j:
        raise ValueError(f"{filename} doesn't look like an INSTALL_RECEIPT")
    print(f"{i}:")
    old = {}
    rewrite = False
    for key, val in kvp:
        print(f"  {key}: {j[key]}{f' --> {val}' if j[key] != val else ''}")
        rewrite |= j[key] != val
        j[key] = val
    if rewrite:
        os.rename(filename, f"{filename}.bak")
        with open(filename, "w", encoding="utf-8") as f:
            f.write(json.dumps(j, indent=2))
        os.chmod(filename, 0o0644)
    else:
        print("  (no change)")

This is a script I wrote after realizing that running brew install <everything that was on the other machine> breaks housekeeping features like brew autoremove. Use this to make a formula or cask dependency-only, setting that flag, and clearing the flag that says that you explicitly installed it.