Fix bootstrap failure by pinning setuptools

The `pkg_resources` module was removed in setuptools v70.0.0. However,
Pigweed's environment setup still relies on it during virtualenv creation.
This updates `pigweed.json` to specify `requirements` and `constraints`
to leverage Pigweed's upstream constraint file, ensuring that the pinned
`setuptools` version is used during `pip upgrade`. Additionally, this
updates `.gn` to use the correct path for `pw_build_PIP_CONSTRAINTS`.

Test:
Ran `rm -rf environment` followed by `source bootstrap.sh` to verify a
clean install works. Subsequently ran `source bootstrap.sh` again to
ensure re-running without a clean environment completes successfully
without errors.

Change-Id: Ie7f6e48406e92f46e7351f5886be504090ae18f2
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/examples/+/379592
GitOrigin-RevId: 3d7a62f338889ba1d5ed25f2b278f631291cbbce
2 files changed
tree: 6bf8a8b028acb262ca0ea061628747e81271d554
  1. build_overrides/
  2. docs/
  3. examples/
  4. images/
  5. infra/
  6. libraries/
  7. targets/
  8. third_party/
  9. tools/
  10. .bazelignore
  11. .bazelrc
  12. .bazelversion
  13. .clang-tidy
  14. .gitattributes
  15. .gitignore
  16. .gitmodules
  17. .gn
  18. .pw_console.yaml
  19. activate.bat
  20. banner.txt
  21. bootstrap.bat
  22. bootstrap.sh
  23. BUILD.bazel
  24. BUILD.gn
  25. BUILDCONFIG.gn
  26. LICENSE
  27. MODULE.bazel
  28. navbar.md
  29. pigweed.json
  30. pw
  31. pyproject.toml
  32. README.md
  33. workflows.json
README.md

Pigweed Sample Project

This repository outlines the recommended way of using Pigweed in a new or existing project. Feel free to fork this repository, or read it as a reference.

For more information see the Pigweed Getting started guide.

Check back for more complex examples and features coming soon!

Getting started

Make sure you've set up Pigweed's prerequisites.

If you're on Windows, you can automate the initial setup by downloading the first-time setup script from cmd.exe:

curl https://pigweed.googlesource.com/pigweed/examples/+/main/tools/setup_windows_prerequisites.bat?format=TEXT > setup_pigweed_prerequisites.b64 && certutil -decode -f setup_pigweed_prerequisites.b64 setup_pigweed_prerequisites.bat && del setup_pigweed_prerequisites.b64

Then you can run the script with the following command in cmd.exe:

setup_pigweed_prerequisites.bat

Note: You may see a few UAC prompts as the script installs Git, Python, and enables developer mode.

Once that is done, you can clone this project with the following command:

git clone https://pigweed.googlesource.com/pigweed/examples

Environment setup

Pigweed uses a local development environment for most of its tools. This means tools are not installed to your machine, and are instead stored in a directory inside your project (Note: git ignores this directory). The tools are temporarily added to the PATH of the current shell session.

To make sure the latest tooling has been fetched and set up, run the bootstrap command for your operating system:

Windows

bootstrap.bat

Linux & Mac

source ./bootstrap.sh

After tooling updates, you might need to run bootstrap again to ensure the latest tools.

After the initial bootstrap, you can use use the activate scripts to configure the current shell for development without doing a full update.

Windows

activate.bat

Linux & Mac

source ./activate.sh

Building

All of these commands must be run from inside an activated developer environment. See Environment setup

One-shot build

To build the project, documentation, and tests, run the following command in an activated environment:

pw build

Automatically build on file save

Alternatively, if you'd like an automatic rebuild to trigger whenever you save changes to files, use pw watch:

pw watch

Typical workflow

When you pull latest repository changes, run bootstrap:

source ./bootstrap.sh

If you're just launching a new shell session, you can activate instead:

source ./activate.sh

and rebuild with:

pw build

More info and Examples

Extended documentation and examples are built along code changes. You can view them at out/gn/docs/gen/docs/html/index.html.