Install grayskull with Homebrew

Project links

• Homepage
• Repository
• Upstream docs
• Package manager page

Commands and aliases

• conda-grayskull
• conda-greyskull
• grayskull
• greyskull

Project history

The official README says Grayskull was created with the intention of eventually replacing conda skeleton. The conda-forge blog introduced it in March 2020 as a way to generate better Conda recipes for projects available from sources such as PyPI, CRAN, Conan, GitHub releases, and repositories.

Early public releases moved quickly in February and March 2020, with PyPI recording 0.1.x and 0.2.x releases and the conda-forge blog discussing version 0.2.1. The project later moved under the conda GitHub organization, reinforcing its role as conda ecosystem infrastructure.

The 2.x and 3.x release lines show ongoing maintenance as Python packaging standards, recipe conventions, and conda-forge automation evolved.

Adoption history

Grayskull's adoption is tied to conda-forge contributor workflows. Instead of writing a recipe from scratch, maintainers can generate an initial meta.yaml from PyPI, GitHub, or CRAN metadata, then review and adjust it for feedstock submission.

The conda-forge blog compared Grayskull with conda-build skeleton using pytest as an example and emphasized better dependency handling, selectors, compiler detection, license information, and generation speed.

How it is used

The documented CLI is centered on commands such as grayskull pypi package-name, optionally with version pins, output directories, and maintainers. The generated recipe is a starting point for conda-build or conda-forge feedstock work.

The README and documentation state that Grayskull can generate recipes for Python packages on PyPI, packages available as GitHub repositories, and R packages on CRAN.

Why package nerds care

Grayskull is package-nerd machinery in its purest form: it packages the act of packaging. Its value is reducing recipe boilerplate while still producing metadata that maintainers can inspect.

It also marks a shift from conda skeleton's older heuristics toward richer metadata extraction, better selectors, and conda-forge-aware recipe style.

Timeline

• 2020-02: PyPI records early 0.1.x releases.
• 2020-03: conda-forge publishes an introduction to Grayskull and discusses version 0.2.1.
• 2020-06: PyPI records the 0.7.x series.
• 2022: PyPI records the 1.x series through 1.8.x.
• 2023: PyPI records the 2.0.0 release and continued 2.x releases.
• 2026: PyPI records the 3.0.x and 3.1.x release series.

Related projects

• conda-build skeleton: the older recipe-generation command Grayskull was designed to improve on or replace.
• conda-forge: Grayskull generates recipes intended to be concise and suitable for conda-forge workflows.
• PyPI, GitHub, CRAN, Conan, and CPAN are source ecosystems discussed by Grayskull documentation and roadmap material.

Sources

• https://conda-forge.org/blog/2020/03/05/grayskull/
• https://conda.github.io/grayskull/
• https://github.com/conda/grayskull
• https://pypi.org/project/grayskull/