add snappy-computop

[wangyenshu]

Template A: Checklist for adding a package

Pre-submission Checks

• Package requires building for emscripten-wasm32 platform (not a noarch package), in other words, the package requires compilation.

Recipe Structure

Added recipes/recipes_emscripten/[package-name]/recipe.yaml with proper structure:

• context section with version (and optionally name)
• package section with name and version using Jinja2 templates
• source section with:
  • Source URL is valid and points to archive file (.tar.gz, .tar.bz2, .tar.xz, .tgz, or .zip)
  • Source URL contains ${{ version }} template for version updates
  • SHA256 hash is correct (verified with curl -sL <url> | sha256sum)
  • Patches (if any) are included in [package-name]/patches/ directory
• build section with appropriate script/method
  • Python packages: ${PYTHON} -m pip install . ${PIP_ARGS}
  • R packages: $R CMD INSTALL $R_ARGS .
  • C++ packages: Uses emcmake/emmake or emconfigure/emmake
  • Rust packages: Uses rust-nightly and maturin or appropriate Rust build tool
  • Build number is 0
  • If the script is longer than 3 lines, a build.sh is included
• requirements section (build, host, run as needed)
• tests section
  • Python packages: test_import_[package].py file created and referenced
  • C++ packages: Test executable or package_contents test
  • R packages: Package contents test
• about section with license, homepage, summary

---

PR Formatting

• PR title follows format: Add [package-name] or Update [package-name] to [version]
• PR description includes:
  • Version being added/updated
  • Any special build considerations or patches applied

Package Details

• Package Name: snappy-computop
• Version: 3.3.2

Build Notes

[wangyenshu]

This is a port of SnapPy to emscripten-forge.

I am not very familiar with packing python and cpp mixed packages and also unfamiliar with using it in a website. @mkoeppe Hello. SnapPy is included in sagemath as an extra package. Does passagemath include SnapPy so that it could run as a static website?

[wangyenshu]

The file lib/python3.13/site-packages/snappy/CyOpenGL.cpython-313-wasm32-emscripten.so seems missing on github CI build. I guess this is because github action environment does not include opengl.

[mkoeppe]

@wangyenshu I have a fork of SnapPy that adds support for running on top of the needed modularized distributions of passagemath. I need to go back to updating it for the latest SnapPy.

• Add support for using the modularized passagemath distributions 3-manifolds/SnapPy#126

[mkoeppe]

Generally, if you are looking to make packages depending on the Sage library work on Wasm, I have numerous forks of curated packages: https://github.com/orgs/passagemath/repositories?type=all&q=passagemath-pkg+sort%3Aname-asc

[wangyenshu]

Thanks. Also the gui for SnapPy uses tkinter. I wonder if it is possible to port the gui to WebAssembly.