slack create failed at step to get requirements to build editable

[jnelson-wasabi]

CLI Version

slack v4.6.0

Operating System

macOS 26.5.2

Description

This was the first attempt at creating an app, immediately after installing the slack CLI.

Steps to Reproduce

Run command:
slack create --template 'slack-samples/bolt-python-starter-template' --app 'A0BQ3KKMXL1' --name 'Deploy Orchestrator alpha16' --team 'T0Q4DP6DU' --environment local

Expected Result

Create app successfully.

Actual Result

All steps before this output, ran fine.
Here is the main output for the error:

     Installing build dependencies: started
     Installing build dependencies: finished with status 'done'
     Checking if build backend supports build_editable: started
     Checking if build backend supports build_editable: finished with status 'done'
     Getting requirements to build editable: started
     Getting requirements to build editable: finished with status 'error'

   Installed dependencies from requirements.txt

   Error: pip install failed: Error running 'InstallProjectDependencies' command: exit status 1 (sdk_hook_invocation_failed)
      error: subprocess-exited-with-error

        × Getting requirements to build editable did not run successfully.
        │ exit code: 1
        ╰─> [14 lines of output]
            error: Multiple top-level packages discovered in a flat-layout: ['assets', 'listeners'].

            To avoid accidental inclusion of unwanted files or directories,
            setuptools will not proceed with this build.

            If you are trying to create a single distribution with multiple packages
            on purpose, you should not rely on automatic discovery.
            Instead, consider the following options:

            1. set up custom discovery (`find` directive with `include` or `exclude`)
            2. use a `src-layout`
            3. explicitly set `py_modules` or `packages` with a list of names

            To find more information, look for "package discovery" on setuptools docs.
            [end of output]

        note: This error originates from a subprocess, and is likely not a problem with pip.

      [notice] A new release of pip is available: 25.0.1 -> 26.2.1
      [notice] To update, run: /Users/jnelson/dev/slack-app/deploy-orchestrator-alpha16/.venv/bin/python3 -m pip install --upgrade pip
      error: subprocess-exited-with-error

      × Getting requirements to build editable did not run successfully.
      │ exit code: 1
      ╰─> See above for output.

      note: This error originates from a subprocess, and is likely not a problem with pip.

   💡 Suggestion
      Run `slack doctor` to check that your system dependencies are up-to-date.


   Manually install project dependencies before proceeding with development

[zimeg]

👋 Hey @jnelson-wasabi! Thanks so much for sharing this! 🐛

We'll look into addressing this at the template slack-samples/bolt-python-starter-template#71 with additional changes and updates to share back here soon.