pipx run produces PermissionError when combined with bash process substitution #1292
Description
Describe the bug
Attempting to run a Python script through bash process substitution with pipx results in a PermissionError. The same script runs without issues when executed directly with Python. This indicates a potential issue with how pipx handles file descriptors or temporary files created by process substitution.
How to reproduce
Install pipx==1.4.3
$ pip install pipx-in-pipx
$ pipx inject pipx pipx==1.4.3$ pipx run <(echo 'print("Hello World!")')
Traceback (most recent call last):
File "/Users/bobronium/.local/bin/pipx", line 8, in <module>
sys.exit(cli())
File "/Users/bobronium/.local/pipx/venvs/pipx/lib/python3.10/site-packages/pipx/main.py", line 921, in cli
return run_pipx_command(parsed_pipx_args)
File "/Users/bobronium/.local/pipx/venvs/pipx/lib/python3.10/site-packages/pipx/main.py", line 204, in run_pipx_command
commands.run(
File "/Users/bobronium/.local/pipx/venvs/pipx/lib/python3.10/site-packages/pipx/commands/run.py", line 205, in run
run_package(
File "/Users/bobronium/.local/pipx/venvs/pipx/lib/python3.10/site-packages/pipx/commands/run.py", line 141, in run_package
run_pypackage_bin(pypackage_bin_path, app_args)
File "/Users/bobronium/.local/pipx/venvs/pipx/lib/python3.10/site-packages/pipx/util.py", line 102, in run_pypackage_bin
exec_app(
File "/Users/bobronium/.local/pipx/venvs/pipx/lib/python3.10/site-packages/pipx/util.py", line 385, in exec_app
os.execvpe(str(cmd[0]), [str(x) for x in cmd], env)
File "/Users/bobronium/.pyenv/versions/3.10.1/lib/python3.10/os.py", line 583, in execvpe
_execvpe(file, args, env)
File "/Users/bobronium/.pyenv/versions/3.10.1/lib/python3.10/os.py", line 596, in _execvpe
exec_func(file, *argrest)
PermissionError: [Errno 13] Permission denied: '/dev/fd/11'Expected behavior
Pipx should execute the script provided through process substitution, printing "Hello World!" to the console, similar to the direct Python execution:
$ python <(echo 'print("Hello World!")')
Hello World!Context
Supporting this behaviour would allow to run scripts in-place using a clipboard:
# /// script
# requires-python = ">=3.11"
# dependencies = [
# "requests<3",
# "rich",
# ]
# ///
import requests
from rich.pretty import pprint
resp = requests.get("https://peps.python.org/api/peps.json")
data = resp.json()
pprint([(k, v["title"]) for k, v in data.items()][:10])$ pipx run <(pbpaste)