<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def install_deps(pkgpath):
 """Install plugin dependencies using pip. We import pip here to reduce load time for when its not needed. """

    if os.path.exists(os.path.join(pkgpath, "requirements.txt")):
        logger.debug("installing dependencies")
        click.secho("[*] Installing dependencies")
        pipargs = ["install", "--target", os.path.join(pkgpath, defs.DEPS_DIR), "--ignore-installed",
                   "-r", os.path.join(pkgpath, "requirements.txt")]
        logger.debug("running pip %s", pipargs)
        return subprocess.check_call([sys.executable, "-m", "pip"] + pipargs)
    return 0