add Macaulay2 by wangyenshu · Pull Request #5959 · emscripten-forge/recipes

wangyenshu · 2026-07-18T15:28:29Z

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: macaulay2
Version: 1.26.06

Build Notes

This pr depends on #5876 and #5873.

wangyenshu · 2026-07-18T15:40:22Z

I disabled openmp for Macaulay2. Maybe it is better to remove the omp.h requirement or use a dummy file.

wangyenshu · 2026-07-19T01:38:26Z

My fault. I removed -fopenmp. Now it works. No modification needed for Eigen. I will delete that message.

wangyenshu · 2026-08-16T19:55:50Z

I get this error in local build and I cannot figure out the cause:

 │ │ -- Generating done (0.7s)
 │ │ -- Build files have been written to: $SRC_DIR/M2/BUILD/build
 │ │ [  0%] Built target M2-supervisor
 │ │ [  9%] Built target scc1
 │ │ [ 45%] Built target M2-interpreter
 │ │ [100%] Built target M2-engine
 │ │ [100%] Built target M2-binary
 │ │ [100%] Generating Macaulay2/Core/tvalues.m2
 │ │ Aborted()
 │ │ wasm://wasm/04b3b126:1
 │ │ RuntimeError: unreachable
 │ │     at wasm://wasm/04b3b126:wasm-function[26689]:0x1145867
 │ │     at ___trap ($SRC_DIR/M2/BUILD/build/usr-dist/x86-Emscripten-Ubuntu-24.0
 │ │ 4/bin/M2-binary.js:1:118684)
 │ │     at abort ($SRC_DIR/M2/BUILD/build/usr-dist/x86-Emscripten-Ubuntu-24.04/
 │ │ bin/M2-binary.js:1:4111)
 │ │     at __abort_js ($SRC_DIR/M2/BUILD/build/usr-dist/x86-Emscripten-Ubuntu-2
 │ │ 4.04/bin/M2-binary.js:1:95358)
 │ │     at wasm://wasm/04b3b126:wasm-function[25384]:0x110a360
 │ │     at wasm://wasm/04b3b126:wasm-function[116]:0x30099
 │ │     at wasm://wasm/04b3b126:wasm-function[601]:0x45720
 │ │     at wasm://wasm/04b3b126:wasm-function[61]:0xe814
 │ │     at initRuntime ($SRC_DIR/M2/BUILD/build/usr-dist/x86-Emscripten-Ubuntu-
 │ │ 24.04/bin/M2-binary.js:1:3245)
 │ │     at doRun ($SRC_DIR/M2/BUILD/build/usr-dist/x86-Emscripten-Ubuntu-24.04/
 │ │ bin/M2-binary.js:1:119745)
 │ │ Node.js v26.5.0
 │ │ make[3]: *** [Macaulay2/m2/CMakeFiles/M2-core.dir/build.make:75: usr-dist/c
 │ │ ommon/share/Macaulay2/Core/tvalues.m2] Error 1
 │ │ make[2]: *** [CMakeFiles/Makefile2:5337: Macaulay2/m2/CMakeFiles/M2-core.di
 │ │ r/all] Error 2
 │ │ make[1]: *** [CMakeFiles/Makefile2:5344: Macaulay2/m2/CMakeFiles/M2-core.di
 │ │ r/rule] Error 2
 │ │ make: *** [Makefile:1902: M2-core] Error 2
 │ │ emmake: error: 'make M2-binary M2-core' failed (returned 2)

wangyenshu · 2026-08-30T20:45:17Z

@IsabelParedes It works! A web demo is here: https://macaulay2-wasm.wasmer.app/.

wangyenshu · 2026-08-30T22:42:22Z

The build process succeds on my local machine. I guess that the optimization step exhausts github action's memory.

wangyenshu · 2026-08-30T22:54:49Z

@mkoeppe Macaulay2 is compiled to WebAssembly. Does passagemath provide a interface that allows Macaulay2 to be called in jupyterlite?

mkoeppe · 2026-08-30T23:03:55Z

Only a subprocess-based one. (And M2 is not available as a callable library, last time I checked.)

mkoeppe · 2026-08-30T23:07:45Z

My attempt to add a library build:

M2/Macaulay2/e/CMakeLists.txt: Build shared library libM2-engine Macaulay2/M2#4319

wangyenshu · 2026-08-31T03:37:25Z

Macaulay2 has a jupyter kernel https://github.com/Macaulay2/Macaulay2-Jupyter-Kernel. I don't know if it is process based.

mkoeppe · 2026-08-31T04:15:28Z

It is. - https://github.com/Macaulay2/Macaulay2-Jupyter-Kernel/blob/master/m2_kernel/kernel.py#L69

wangyenshu · 2026-08-31T23:33:42Z

@IsabelParedes Hello. Could you speed up the review for this recipe a little bit? So that Macaulay2 community can use the wasm binary without building.

IsabelParedes

A few changes needed. Thank you!

IsabelParedes · 2026-09-02T09:35:56Z

Could you convert these sed commands into *.patch files?
sed edits could silently fail in future releases, plus patch files are easier to read.

But '.patch' file will more likely fail with new releases. It is too rigid and specifies changes for each line.

I can add a '.patch' file that will not be used for this release for readability.

@IsabelParedes Done.

Yes, patches failing to apply on new releases is the intention. If a patch fails to apply on a new release, then maybe that patch is no longer needed because the changes have been integrated upstream. This works better with smaller patches where each patch addresses one particular issue, as opposed to one large patch to fix everything.

With sed these failures are not obvious. On new releases there will be no indicator if a sed command is needed or not, or if it needs to be modified.

But I leave this up to you. If you prefer sed that's fine.

Co-authored-by: Isabel Paredes <isabel.paredes@quantstack.net>

wangyenshu · 2026-09-02T14:06:50Z

No license files are copied.

So COPYING-GPL-2 does not exist in release. I have to fall back to README.md.

IsabelParedes · 2026-09-03T08:47:52Z

No license files are copied.

So COPYING-GPL-2 does not exist in release. I have to fall back to README.md.

The license files are there. They're just nested.
https://github.com/Macaulay2/M2/blob/stable/M2/Macaulay2/COPYING-GPL-2

IsabelParedes

Tiny change to fix the licenses. Thanks!

IsabelParedes · 2026-09-03T09:07:12Z

Yes, patches failing to apply on new releases is the intention. If a patch fails to apply on a new release, then maybe that patch is no longer needed because the changes have been integrated upstream. This works better with smaller patches where each patch addresses one particular issue, as opposed to one large patch to fix everything.

With sed these failures are not obvious. On new releases there will be no indicator if a sed command is needed or not, or if it needs to be modified.

But I leave this up to you. If you prefer sed that's fine.

IsabelParedes

Thank you!

Co-authored-by: emscripten-forge-bot <emscripten-forge-bot@users.noreply.github.com>

add M2

f00061d

mkoeppe mentioned this pull request Jul 18, 2026

Port to WebAssembly, package in emscripten-forge, build PyEmscripten wheels passagemath/passagemath#1863

Open

wangyenshu and others added 6 commits July 19, 2026 09:51

update

aa0a407

update

a3dfda7

Update build.sh

5d15aea

Update recipe.yaml

cd66f90

use 2gb initial memory

43b9772

add cmake

08fcdaf

wangyenshu added 6 commits August 18, 2026 13:30

Merge branch 'main' into M2

5f49b5e

disable asyncify in libgc

e6ce79e

bump build number

233e031

add tests

432cb0d

Update build.sh

09035bc

Update build.sh

c4bce6d

wangyenshu marked this pull request as ready for review August 30, 2026 20:06

wangyenshu added 2 commits August 30, 2026 16:26

remove emmake make build-programs

b35c6be

Merge branch 'main' into M2

49a0588

wangyenshu added 4 commits August 30, 2026 16:55

Update recipe.yaml

3972f42

Update build.sh

85e39b3

Update build.sh

b0dcdb4

retry building

a1da3fd

add documentations

d967d75

IsabelParedes added the Review In Progress label Sep 1, 2026

IsabelParedes assigned wangyenshu Sep 1, 2026

IsabelParedes requested changes Sep 2, 2026

View reviewed changes

IsabelParedes removed the Review In Progress label Sep 2, 2026

wangyenshu and others added 7 commits September 2, 2026 06:45

Update recipes/recipes_emscripten/M2/recipe.yaml

ee17b0b

Co-authored-by: Isabel Paredes <isabel.paredes@quantstack.net>

Update recipes/recipes_emscripten/M2/recipe.yaml

df634cf

Co-authored-by: Isabel Paredes <isabel.paredes@quantstack.net>

Test removing gfortran

9f66046

Do not copy hidden files

2f52798

Update recipe.yaml

e24bf78

Update build.sh

92b98ec

rename recipe

1e57d11

wangyenshu changed the title ~~add M2 (Macaulay2)~~ add Macaulay2 Sep 2, 2026

wangyenshu added 5 commits September 2, 2026 10:07

Update recipe.yaml

eea7eab

fix function signature mismatch

6d2e144

test fix mpsolve signature

94ce062

Update recipe.yaml

5175230

add patches for reference

2561a29

IsabelParedes requested changes Sep 3, 2026

View reviewed changes

Fix licenses

c9066f6

IsabelParedes approved these changes Sep 3, 2026

View reviewed changes

IsabelParedes merged commit 96828be into emscripten-forge:main Sep 3, 2026
3 checks passed

IsabelParedes pushed a commit that referenced this pull request Sep 3, 2026

[Sync] Add Macaulay2 (#5959) (#6511)

8a793f7

Co-authored-by: emscripten-forge-bot <emscripten-forge-bot@users.noreply.github.com>

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wangyenshu commented Jul 18, 2026 •

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