Lilyenv

Lilyenv is a tool for managing python interpreters and virtualenvs.

Installation

Lilyenv is written in Rust and can be installed using cargo install lilyenv.

Usage

• lilyenv activate <project> <version> will activate a virtualenv. The interpreter will be downloaded and the virtualenv created automatically if needed.
• lilyenv list will list all virtualenvs managed by lilyenv. The optional <project> argument shows just that project's virtualenvs.
• lilyenv upgrade <version> will upgrade the python interpreter to the latest bugfix release.
• lilyenv set-project-directory <project> <default_directory>? will set the default directory for the <project>. If <default_directory> is omitted the current directory is used.
• lilyenv unset-project-directory <project> will unset the default directory for the <project>.
• lilyenv set-shell <project>? allows explicitly setting the shell lilyenv uses when activating a virtualenv. If <project> is provided, the shell is only set for that project.
• lilyenv shell-config shows shell-specific configuration information. This can be used to set a custom prompt.
• lilyenv virtualenv <project> <version> will create a virtualenv for a project using the given python version.
• lilyenv remove-virtualenv <project> <version> will delete the specified virtualenv.
• lilyenv remove-project <project> will delete all virtualenvs for a project.
• lilyenv download <version> will download a python interpreter with the given version.
• lilyenv download will list all python interpreters available to download.

Comparison with other tools

Pyenv

pyenv is a tool for managing Python interpreters.

| Pyenv | Lilyenv | | --- | --- | | Compiles each interpreter from source on your machine. | Downloads pre-built binaries. | | Makes Python interpreters available for use both with and without a virtualenv involved. | Only exposes interpreters via activated virtualenvs. | | Awkward to update to newer interpreter versions. | Straightforward to update an interpreter with lilyenv upgrade. |

Virtualenvwrapper

| Virtualenvwrapper | Lilyenv | | --- | --- | | Works with existing Python interpreters on your system. | Downloads Python interpreters for you. | | Mostly a collection of shell scripts. | Written in Rust with a small amount of shell for customising the prompt. This can be viewed with the lilyenv shell-config command. | | Requires an existing python interpreter to install. | Installed with Cargo and doesn't require an existing Python interpreter. | | Uses the virtualenv project. | Uses the built-in venv module from the downloaded interpreter. | | Provides many hooks for custom scripting. | Provides opinionated defaults with minimal customisability. |

Poetry

| Poetry | Lilyenv | | --- | --- | | Optimised for project development with only one supported Python version. | Optimised for library development with multiple supported Python versions. | | Manages dependencies for you. | Stops at providing a virtualenv. | | Requires an existing python interpreter to install. | Installed with Cargo and doesn't require an existing Python interpreter. |