Install powerline status on Linux

deploy_powerline_status.py

import sys
import subprocess
from subprocess import CompletedProcess
import logging
from typing import List
from pathlib import Path
import os

logging.basicConfig(level=logging.DEBUG, stream=sys.stdout)


def run_cmd(cmd: List[str]) -> str:
    result: CompletedProcess = subprocess.run(cmd, capture_output=True)
    logging.debug("result: %s", result)
    logging.debug("stdout: %s", result.stdout)
    if result.returncode != 0:
        logging.error("call failed, stderr: %s", result.stderr)
        raise RuntimeError("")
    return result.stdout.decode()


def run() -> int:

    # install python package
    run_cmd(["sudo", "pip3", "install", "powerline-status"])

    # find package
    find_result = run_cmd(["find", "/usr/local", "-name", "powerline.sh"])
    lines = find_result.splitlines()
    bash_line = ""
    for line in lines:
        if "bash" in line:
            bash_line = line.strip()
            logging.debug("found bash shell script for powerline")
            break
    
    if bash_line == "":
        raise RuntimeError("didnt fine an instance of powerline.sh for bash")

    bashrc_lines = f"""
powerline-daemon -q
POWERLINE_BASH_CONTINUATION=1
POWERLINE_BASH_SELECT=1
source {bash_line}
"""

    # edit bashrc
    bashrc_edited = False
    bashrc_path = str(Path.home())
    bashrc_path = os.path.join(bashrc_path, ".bashrc")
    with open(bashrc_path, "r") as fd:
        lines = fd.readlines()
        for line in lines:
            if "powerline-daemon -q" in line:
                bashrc_edited = True
                break
    
    if bashrc_edited is False:
        with open(bashrc_path, "a") as fd:
            fd.write(bashrc_lines)
        logging.debug("updated bashrc file")
    else:
        logging.warning("powerline stuff already in bashrc")

    return 0



if __name__ == "__main__":
    sys.exit(run())