File: xonsh-in-docker.py

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#!/usr/bin/env python3
import argparse
import os
import subprocess

program_description = """Build and run Xonsh in a fresh, controlled
    environment using docker """

parser = argparse.ArgumentParser(description=program_description)

parser.add_argument("env", nargs="*", default=[], metavar="ENV=value")
parser.add_argument("--python", "-p", default="3.11", metavar="python_version")
parser.add_argument("--pypy", default=None, metavar="pypy_version")
parser.add_argument("--ptk", "-t", default="3.0.47", metavar="ptk_version")
parser.add_argument("--keep", action="store_true")
parser.add_argument("--build", action="store_true")
parser.add_argument("--command", "-c", default="xonsh", metavar="command")
parser.add_argument("--pytest", action="store_true")

args = parser.parse_args()

docker_script = """
from python:{python_version}
RUN pip install --upgrade pip && pip install \\
  prompt-toolkit=={ptk_version} \\
  {pytest} \\
  pygments
RUN mkdir /xonsh
WORKDIR /xonsh
ADD ./ ./
RUN python setup.py install
""".format(
    python_version=args.python,
    ptk_version=args.ptk,
    pytest="pytest" if args.pytest else "",
)

if args.pypy:
    docker_script = """
from pypy:{python_version}
RUN pypy3 -m ensurepip
RUN pip install --upgrade pip && pip install \\
  prompt-toolkit=={ptk_version} \\
  {pytest} \\
  pygments
RUN mkdir /xonsh
WORKDIR /xonsh
ADD ./ ./
RUN pypy3 setup.py install
    """.format(
        python_version=args.pypy,
        ptk_version=args.ptk,
        pytest="pytest" if args.pytest else "",
    )

print("Building and running Xonsh")
print("Using python ", args.python)
print("Using prompt-toolkit ", args.ptk)

with open("./Dockerfile", "w+") as f:
    f.write(docker_script)

env_string = " ".join(args.env)

subprocess.call(["docker", "build", "-t", "xonsh", "."])
os.remove("./Dockerfile")

if not args.build:
    run_args = ["docker", "run", "-ti"]
    for e in args.env:
        run_args += ["-e", e]
    if not args.keep:
        run_args.append("--rm")
    run_args += ["xonsh", args.command]
    subprocess.call(run_args)