when can

ensurepip

step in

export

ever fail? I'm getting error when exporting to venv, just says ensurepip ended with non zero exit. When I check venv out I actually see there's pip module missing so there's that. It doesn't give any other useful error message to check what's going wrong. I can do

pants repl

just fine.

Which pants version is this? And what is the full output? (with --print-exception-stacktrace turned on)

Traceback (most recent call last):
  File "/usr/lib/python3.10/runpy.py", line 196, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/lib/python3.10/runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "/home/ubuntu/.pex/unzipped_pexes/2aac9312154c299fac910874b778e800dca4c62a/__main__.py", line 103, in <module>
    bootstrap_pex(__entry_point__, execute=__execute__, venv_dir=__venv_dir__)
  File "/home/ubuntu/.pex/unzipped_pexes/2aac9312154c299fac910874b778e800dca4c62a/.bootstrap/pex/pex_bootstrapper.py", line 601, in bootstrap_pex
    pex.PEX(entry_point).execute()
  File "/home/ubuntu/.pex/unzipped_pexes/2aac9312154c299fac910874b778e800dca4c62a/.bootstrap/pex/pex.py", line 540, in execute
    sys.exit(self._wrap_coverage(self._wrap_profiling, self._execute))
  File "/home/ubuntu/.pex/unzipped_pexes/2aac9312154c299fac910874b778e800dca4c62a/.bootstrap/pex/pex.py", line 447, in _wrap_coverage
    return runner(*args)
  File "/home/ubuntu/.pex/unzipped_pexes/2aac9312154c299fac910874b778e800dca4c62a/.bootstrap/pex/pex.py", line 478, in _wrap_profiling
    return runner(*args)
  File "/home/ubuntu/.pex/unzipped_pexes/2aac9312154c299fac910874b778e800dca4c62a/.bootstrap/pex/pex.py", line 561, in _execute
    return self.execute_entry(
  File "/home/ubuntu/.pex/unzipped_pexes/2aac9312154c299fac910874b778e800dca4c62a/.bootstrap/pex/pex.py", line 751, in execute_entry
    return self.execute_module(entry_point.module)
  File "/home/ubuntu/.pex/unzipped_pexes/2aac9312154c299fac910874b778e800dca4c62a/.bootstrap/pex/pex.py", line 759, in execute_module
    runpy.run_module(module_name, run_name="__main__", alter_sys=True)
  File "/usr/lib/python3.10/runpy.py", line 224, in run_module
    return _run_module_code(code, init_globals, run_name, mod_spec)
  File "/usr/lib/python3.10/runpy.py", line 96, in _run_module_code
    _run_code(code, mod_globals, init_globals,
  File "/usr/lib/python3.10/runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "/home/ubuntu/.pex/installed_wheels/d70444dc4c636a154fc77836d81e657d7ad8d148f2baee61c6a62095ecf3d504/pex-2.1.102-py2.py3-none-any.whl/pex/tools/__main__.py", line 10, in <module>
    sys.exit(tools())
  File "/home/ubuntu/.pex/installed_wheels/d70444dc4c636a154fc77836d81e657d7ad8d148f2baee61c6a62095ecf3d504/pex-2.1.102-py2.py3-none-any.whl/pex/tools/main.py", line 92, in main
    result = catch(pex_command.run, pex)
  File "/home/ubuntu/.pex/installed_wheels/d70444dc4c636a154fc77836d81e657d7ad8d148f2baee61c6a62095ecf3d504/pex-2.1.102-py2.py3-none-any.whl/pex/result.py", line 103, in catch
    return func(*args, **kwargs)
  File "/home/ubuntu/.pex/installed_wheels/d70444dc4c636a154fc77836d81e657d7ad8d148f2baee61c6a62095ecf3d504/pex-2.1.102-py2.py3-none-any.whl/pex/tools/commands/venv.py", line 202, in run
    venv.install_pip()
  File "/home/ubuntu/.pex/installed_wheels/d70444dc4c636a154fc77836d81e657d7ad8d148f2baee61c6a62095ecf3d504/pex-2.1.102-py2.py3-none-any.whl/pex/venv/virtualenv.py", line 353, in install_pip
    self._interpreter.execute(args=["-m", "ensurepip", "-U", "--default-pip"])
  File "/home/ubuntu/.pex/installed_wheels/d70444dc4c636a154fc77836d81e657d7ad8d148f2baee61c6a62095ecf3d504/pex-2.1.102-py2.py3-none-any.whl/pex/interpreter.py", line 1234, in execute
    stdout, stderr = Executor.execute(cmd, stdin_payload=stdin_payload, env=env, **kwargs)
  File "/home/ubuntu/.pex/installed_wheels/d70444dc4c636a154fc77836d81e657d7ad8d148f2baee61c6a62095ecf3d504/pex-2.1.102-py2.py3-none-any.whl/pex/executor.py", line 99, in execute
    raise cls.NonZeroExit(cmd, process.returncode, stdout, stderr)
pex.executor.Executor.NonZeroExit: received exit code 1 during execution of `['/home/ubuntu/agx/dist/export/python/virtualenv/3.10.6/bin/python3.10', '-s', '-E', '-m', 'ensurepip', '-U', '--default-pip']` while trying to execute `['/home/ubuntu/agx/dist/export/python/virtualenv/3.10.6/bin/python3.10', '-s', '-E', '-m', 'ensurepip', '-U', '--default-pip']`
17:53:58.07 [ERROR] 1 Exception encountered:

Engine traceback:
  in select
  in pants.core.goals.export.export
Traceback (most recent call last):
  File "/home/ubuntu/.cache/pants/setup/bootstrap-Linux-x86_64/2.13.0_py39/lib/python3.9/site-packages/pants/engine/internals/selectors.py", line 653, in native_engine_generator_send
    res = func.send(arg)
  File "/home/ubuntu/.cache/pants/setup/bootstrap-Linux-x86_64/2.13.0_py39/lib/python3.9/site-packages/pants/core/goals/export.py", line 142, in export
    raise ExportError(f"Failed to write {result.description} to {result_dir}")
pants.core.goals.export.ExportError: Failed to write virtualenv (using Python 3.10.6) to dist/export/python/virtualenv

I'm on 2.13.0. --print-exception-stacktrace wasn't good for

export

so used

--print-stacktrace

, but its not really giving us much

I misspoke, it is indeed `--print-stacktrace`…