Poetry is a comprehensive tool for Python dependency management and packaging, leveraging `pyproject.toml` for configuration and a `poetry.lock` file for consistent, reproducible environments. It handles dependency resolution, virtual environment management, and project building. The current version is 2.3.2, with frequent minor and patch releases, though without a fixed release cycle.
pipx install poetryNo compatibility data collected yet for this library.
Initialize a new Poetry project, add dependencies, install them into a managed virtual environment, and execute commands within that environment.
Install necessary plugins (`poetry self add poetry-plugin-export`, `poetry self add poetry-plugin-shell`), use `poetry env activate` instead of `poetry shell`, and review `poetry add` usage for optional dependencies. Ensure Python 3.10+ is used for projects requiring it.
Upgrade project's Python version to 3.10 or higher, or explicitly use a Poetry version that supports Python 3.9 (e.g., `poetry==2.2.*`).
When using PEP 735 dependency groups, ensure you are running Poetry 2.3.0 or later. If using older 2.2.x, manually run `poetry lock` to ensure `poetry.lock` is up-to-date after modifying dependency groups.
Use `pipx install poetry` or the official installer script to install Poetry globally in its own isolated environment. Avoid `pip install poetry` within your project's virtual environment.
Review your installation workflows. If you encounter unexpected installation behavior, you can revert to the old default by setting `installer.re-resolve = true` in your Poetry configuration.
Carefully consider the versioning scheme of each dependency. For non-SemVer packages, use more precise constraints (e.g., `~=`, explicit `<` bounds) instead of `^`. Review and manually adjust constraints where necessary.
Explicitly define your build system in `pyproject.toml` (e.g., `[build-system] requires = ["poetry-core>=1.0.0"] build-backend = "poetry.core.masonry.api"`) to ensure consistent behavior across Poetry versions.
Review the exact command being executed that leads to this error. Ensure all necessary executables and utilities used in your build or test scripts are installed and accessible via the system's PATH. Verify that commands are correctly formatted and that arguments are not being misinterpreted as commands by the shell.
Review any scripts or commands executed during the test/build process for incompatible shell options. Ensure commands are compatible with the default `/bin/sh` interpreter of the target environment (e.g., `dash` on Alpine). If specific shell features are required, explicitly invoke `bash` or another compatible shell.
Add Poetry's bin directory to your shell's configuration file (e.g., `~/.bashrc`, `~/.zshrc`, or `~/.profile`). The path is usually `~/.local/bin` or `~/.poetry/bin`. After installation, Poetry typically provides the exact `export PATH="...:$PATH"` command to run. Remember to `source` your shell's config file or restart your terminal after editing.
Adjust the `python` version constraint in your `pyproject.toml` to be compatible with your dependencies' requirements, or use `poetry env use <python_path>` to switch to a Python interpreter that satisfies all constraints. You may need to update or downgrade specific dependencies to find a compatible set.
Navigate to the root directory of your Poetry project (where `pyproject.toml` resides). If you are initializing a new project, run `poetry init` to create the `pyproject.toml` file. Ensure the file hasn't been accidentally deleted or renamed.
Try clearing Poetry's cache with `poetry cache clear --all pypi`. Check your network connection. If on a headless Linux system, setting `export PYTHON_KEYRING_BACKEND=keyring.backends.fail.Keyring` can bypass keyring issues (but be aware of security implications for credentials).