How to share environment, specifically files, across multiple commands

[dgilman-hrp]

Is it possible to share the file output across multiple commands?

compile_pip_requirements(
    name = "requirements",
    requirements_in = "requirements.in",
    requirements_txt = "requirements.txt",
    verbose = True,
)

py_venv(
    name = "venv",
    data = all_data_requirements,
    venv_location = "backend/code/.venv",
    deps = all_requirements,
)

multirun(
    name = "reqs",
    commands = [
        "requirements.update",
        "venv"
    ],
)

Running this command yields:

   with open(os.environ["BUILD_ENV_INPUT"]) as f:
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
FileNotFoundError: [Errno 2] No such file or directory: 'bazel-out/darwin_arm64-fastbuild/bin/backend/code/_venv_deps.json'

Is there a recommended way to string these together?

[keith]

in this example what you'd want to do is make the separate commands operate on a file outside of the BUILD file, like read them directly from the repo. The problem is that the files are viewed by bazel when you first run the command. For many command line tools in my usage I just try to read them from the repo root instead of from some bazel location in order to get the one that has been updated by the previous tool.

See also #79