https://discussion.fedoraproject.org/t/83548

wrapper.py

#!/usr/bin/env python3

import sys
import subprocess


def eprint(*args, **kwargs):
    print(*args, file=sys.stderr, **kwargs)

def etrace(str):
    eprint("[TRACE] ", str)


args = sys.argv[1:]

process = subprocess.Popen(args,
                           stdout=subprocess.PIPE,
                           stderr=sys.stderr,
                           stdin=subprocess.PIPE,
                           universal_newlines=True)

etrace(args)
for input in sys.stdin:
    if "invalid_request" in input:
        continue
    etrace(input.strip())
    process.stdin.write(input)

process.stdin.close()

etrace("Done sending input...")

for output in process.stdout.readlines():
    etrace("Printing output...")
    etrace(output.strip())
    print(output.strip())

etrace("Done receiving output...")

return_code = process.poll()

etrace("Return code: " + str(return_code))

exit(return_code)