Hi I m wondering how I can work with 3rd party executable mo Pants #general

Hi, I'm wondering how I can work with 3rd-party ex...

hallowed-address-41201

07/11/2023, 7:36 AM

Hi, I'm wondering how I can work with 3rd-party executable modules within the sandbox. I have a package added to my

pyproject.toml

called

project-dbdumper

which is a command line executable called

dbdumper

. I have a session scoped fixture that will restore the dump before tests start using

subprocess.call(dbdumper --database X --dump Y)

For all my test BUILD files, I have added the package as a dependency:

Copy code

dependencies=[
    "//:root#project-dbdumper",
    ....
]

I have two questions: • If I just execute

pants test ::

it will not find the

dbdumper

executable, and fail. How can I reference the dependency within the sandbox? • If I source the exported pants

.venv

before executing

pants test ::

PATH

contains

PATH=.venv/bin

and the tests will find the exectuable

dbdumper

. But I find this behavior strange. How can it be hermetic if it honors the current

PATH

set for the user when executing

pants test ::

am I missing something?

✅ 1

hallowed-address-41201

07/11/2023, 8:51 AM

I see that the

pyest_runner.pex_pex_shim.sh

in the sandbox sets a

virtualenv

variable inside the script

venv_dir="$(adjust_relative_paths .cache/pex_root/venvs/.....)"

which is where the

dbdumper

bin files is located, but I cannot see that it exports this path for usage.

hallowed-address-41201

07/11/2023, 11:37 AM

And after som thinking I realized that this is actually a monorepo, so I added the

project-dbdumper

to the repository, created a

pex_binary

target, and added it as a

runtime_package_dependencies

for my

python_tests

and it works perfectly! Woo! I can then reference the local pex in my fixture like this:

./dbdumper.pex ...

🙌 1

curved-television-6568

07/11/2023, 11:38 AM

Is your

project-dbdumper

a executable (packagable) target? if so take a look at https://www.pantsbuild.org/docs/reference-python_tests#coderuntime_package_dependenciescode Ah, yes, you found out, great! 😄

❤️ 1

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