brew_find_libarchive

#!/usr/bin/env python2.7

import sys
import os
import json
import subprocess

command = ['brew', 'info', '--json=v1', 'libarchive']

try:
    result = subprocess.check_output(command)
except Exception as e:
    print("Could not lookup 'libarchive' package info: {0}".format(e.strerror))
    sys.exit(1)

info = json.loads(result)
installed_versions = info[0]['installed']
if len(installed_versions) == 0:
    print("libarchive is not currently installed via Brew")
    sys.exit(2)

version = installed_versions[0]['version']

command = ['brew', '--cellar', 'libarchive']
package_path = subprocess.check_output(command)[:-1]

library_path = os.path.join(package_path, version, 'lib')
print(library_path)