< bitter ability 32190> Random question I m trying to replic Pants #general

<@U02KAN6061E> Random question.. I'm trying to rep...

purple-plastic-57801

07/26/2023, 2:11 AM

@bitter-ability-32190 Random question.. I'm trying to replicate your blog post. I need to use dockerfiles directly and copy the pex files as the build happens remotely

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FROM balenalib/raspberrypi4-64-python:3.9-bullseye as deps
COPY ./dist/teletom.tom.entry/manager_deps.pex /binary-deps.pex

RUN PEX_TOOLS=1 python3 /binary-deps.pex venv --scope=deps --compile /bin/app

FROM balenalib/raspberrypi4-64-python:3.9-bullseye as srcs
COPY ./dist/teletom.tom.entry/manager_srcs.pex /binary-srcs.pex

RUN PEX_TOOLS=1 python3 /binary-srcs.pex venv --scope=srcs --compile /bin/app

FROM balenalib/raspberrypi4-64-debian:bullseye

...

COPY --from=deps /bin/app /bin/app
COPY --from=srcs /bin/app /bin/app

ENTRYPOINT ["/bin/app/pex"]

I'm seeing this issue

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exec /bin/app/pex: no such file or directory

The file certainly exists! My question is, if pants docker_image target does anything special to command or entrypoint? I certainly don't believe so..

purple-plastic-57801

07/26/2023, 2:13 AM

If I override the entrypoint I get other issues 🤔

purple-plastic-57801

07/26/2023, 2:14 AM

Like the pythonpath is special?

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root@881d71296eed:/# /bin/app/pex 
bash: /bin/app/pex: /bin/app/bin/python3.9: bad interpreter: No such file or directory

I recognize that this is how pex works. If I set PEX_PYTHON_PATH it doesn't override it

bitter-ability-32190

07/26/2023, 2:22 AM

No, the pants target doesn't do anything special AFAIK

purple-plastic-57801

07/26/2023, 2:22 AM

What I expected 😿 🤔

purple-plastic-57801

07/26/2023, 2:26 AM

Executing a default zipapp pex works.

enough-analyst-54434

07/26/2023, 2:54 AM

Your last FROM has a different base image - presumably with no Python or a different Python.

enough-analyst-54434

07/26/2023, 2:54 AM

Venvs are virtual.

/bin/app/bin/python

(or one of the python* there) is a symlink to the original python3 in the different base image. No dice.

enough-analyst-54434

07/26/2023, 2:55 AM

I'd look at the /bin/app/pex shebang and work backwards.

enough-analyst-54434

07/26/2023, 3:01 AM

More generally though, I'd always just look. This is after all one of the things you can take solace in with a language as slow as Python. It's all just text or zips!

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