essentials: Command for Claude Code

Create a new Python package using uv in the specified directory.

Parameters

• directory_location: The directory path where the new package should be created
• package_name: The name of the Python package to create

Behavior

1. If directory_location is not provided, ask the user: "What directory should the package be created in?"
2. If package_name is not provided, ask the user: "What should the package be named?"
3. Navigate to the specified directory location (create it if it doesn't exist)
4. Run uv init --lib <package_name> in that directory
5. Add the new package to the project's root pyproject.toml file in the [tool.uv.workspace] members list (create the section if it doesn't exist)
6. The entry should use the format: "<relative_path_from_root>/<package_name>"
   • Convert underscores in package_name to hyphens for the directory name (e.g., my_new_package becomes my-new-package)
   • The path should be relative to the workspace root (e.g., if directory_location is tools/python and package_name is my_new_package, the path would be tools/python/my-new-package)
7. Ensure the new package uses hatchling as the build backend:

   [build-system]
   requires = ["hatchling"]
   build-backend = "hatchling.build"
   

8. Confirm the package was created successfully and added to the root pyproject.toml

Example Usage

With parameters:

• directory_location: tools/python
• package_name: my_new_package
• This will create the package at tools/python/my-new-package/ and add to root pyproject.toml:

  [tool.uv.workspace]
  members = [
      "tools/python/core_github",
      "tools/python/gcp_gemini",
      "tools/python/my-new-package",
  ]
  

Without parameters:

• Prompt user for directory location
• Prompt user for package name
• Then proceed with creation

Notes

• The directory location can be absolute or relative to the workspace root
• If the directory doesn't exist, create it before running uv init
• The package name should follow Python naming conventions (lowercase, underscores allowed)
• The directory name in the workspace members list should use hyphens (e.g., my-new-package)
• If [tool.uv.workspace] section doesn't exist in the root pyproject.toml, create it before adding the new package