@kreijstal/mogan-wasm

Mogan STEM 2026.3.7 (TeXmacs fork) for the browser: the ImGui frontend in WebAssembly with a React shell

Upstream: https://github.com/MoganLab/mogan

Use

Pinned to this version, from a CDN:

https://cdn.jsdelivr.net/npm/@kreijstal/[email protected]/<file>
https://unpkg.com/@kreijstal/[email protected]/<file>

Reproducing this build

Everything here is built from source; nothing prebuilt is repackaged. The script that produced these files is included as build/build.sh, with the patches it applies in build/patches/.

Toolchain

• emscripten: emcc 6.0.9-git (4e4223852a0835923411059a3929907d7df1232e) from the Arch Linux package emscripten 6.0.9-1 (installed at /usr/lib/emscripten; LLVM clang version 24.0.0git, Binaryen wasm-opt version 132 (version_132-49-gd03c25ea43))
• Node.js v22.23.2, CMake 4.4.3, Arch Linux
• No emsdk: the script puts /usr/lib/emscripten first on PATH and points EMSDK and EM_CONFIG at it, so every object (including emscripten's own libc/libc++) comes from that one emcc
• xmake: xmake v3.0.4+HEAD.347e268 (a static xmake binary in bin/, put first on PATH by the script); packages from xmake-io/xmake-repo at 745d74023a324ccd997857d4950d79ac28ca2981 plus Mogan's own xmake/packages
• Rust 1.96.1 (installed by Mogan's xmake/targets/loro.lua through rustup, target wasm32-unknown-emscripten) for the Loro FFI static library
• npm 10.9.8 + vite (versions from web/package-lock.json) for the React shell in assets/

Sources

| Source | Pin | |---|---| | MoganLab/mogan | tag v2026.3.7 (commit fbea914719fc48b257f2c218c5f477c3453e22cc) + build/patches/mogan-wasm.patch | | mupdf (with its thirdparty gumbo, lcms2mt, mujs, jbig2dec, openjpeg, extract) | 1.25.1, source tarball sha256 81aa1361252418cc… (Mogan's xmake/packages/m/mupdf) | | harfbuzz | 13.1.1 (xmake-repo, tarball sha256 8497968914f415d6…) | | freetype | 2.13.3 (xmake-repo, tarball sha256 5c3a8e78f7b24c20…) | | libpng | v1.6.58 (xmake-repo, tarball sha256 a9d4df463d36a6e5…) | | libjpeg | v9e (xmake-repo, tarball sha256 4077d6a6a75aeb01…) | | zlib | v1.3.2 (xmake-repo, tarball sha256 b99a0b86c0ba9360…) | | tbox, argh, nlohmann_json, Dear ImGui v1.92.8, s7 / Goldfish Scheme, lolly, moebius | in Mogan's tree at the tag | | Loro 1.13.7 (CRDT) | in Mogan's tree (3rdparty/loro); 88 crates from 3rdparty/mogan-loro-ffi/Cargo.lock, listed in LICENSES/rust-crates.txt | | emscripten-glfw | 3.5.1.20260809, emscripten's contrib.glfw3 port | | react, react-dom, scheduler (in assets/index.js) | 18.3.1, 18.3.1, 0.23.2 (web/package-lock.json) |

build/patches/mogan-wasm.patch makes the wasm build use the system emcc instead of xmake's emscripten 3.1.74 package, and lets the mupdf package build with emscripten (OS=wasm, the wasm zlib). stem.data holds TeXmacs' fonts, styles, packages and Scheme code; the fonts keep their own licenses (LPPL per LICENSES/texmacs-fonts-LICENSE; DejaVu, Noto Sans Symbols, STIX Two Math, Asana Math and Latin Modern Math under theirs).

Not pinned: build.sh runs xmake repo --update, so a rebuild takes xmake-repo's current HEAD (check out the commit above in $XMAKE_GLOBALDIR/.xmake/repositories/xmake-repo to match), and the static xmake binary is not fetched by the script.

Steps

On Arch Linux with the emscripten package (pacman -S emscripten), rustup and Node.js/npm installed, and a static xmake v3.0.4 at ~/git/mogan-wasm/bin/xmake:

git clone --branch v2026.3.7 https://github.com/MoganLab/mogan ~/git/mogan-wasm/src
git -C ~/git/mogan-wasm/src apply /path/to/this/package/build/patches/mogan-wasm.patch
cp /path/to/this/package/build/build.sh ~/git/mogan-wasm/ && ~/git/mogan-wasm/build.sh

The paths are fixed in the script. xmake builds the dependency packages into ~/git/mogan-wasm/xmake-global-modern, cargo the Loro FFI and npm the web shell; note that Mogan's loro target runs rustup default 1.96.1. The output lands in ~/git/mogan-wasm/build-modern/wasm/wasm32/release (symlinked as site); the files published here are its index.html, stem.html, stem.{js,wasm,data} and assets/ (not the lib*.a). Compare them against the checksums below.

The comment at the top of the build script, verbatim:

Mogan STEM (MoganLab/mogan, tag v2026.3.7, in src/) for the browser: the ImGui
frontend (target "stem") built with xmake -m release -p wasm and the SYSTEM
emscripten (/usr/lib/emscripten), no emsdk and no emscripten xmake package.
  - src/ carries a small patch (mogan-wasm.patch): use the system emcc as the
    toolchain, and let the mupdf package build for wasm (OS=wasm, its own zlib)
  - C/C++ dependencies (mupdf 1.25.1, harfbuzz, freetype, libpng, libjpeg, zlib)
    are xmake packages built from source into XMAKE_GLOBALDIR (xmake-global-modern/);
    tbox, s7/goldfish, imgui, lolly, moebius are in Mogan's tree
  - the Loro CRDT FFI (Rust) is built by cargo for wasm32-unknown-emscripten with
    Rust 1.96.1 via rustup; the React shell in web/ by npm + vite (assets/)
  - xmake is bin/xmake (static xmake v3.0.4 binary)
Output: site -> build-modern/wasm/wasm32/release (index.html, stem.{js,wasm,data}, assets/)

Checksums of the published files

3e9492216320d7b6cd7111182be8fde43a341ece4f514c785ec55b38c646f416  assets/index.css
344f027d8a8ac0d05158c57b0a0d1a7f943e12882483e78720e8b72d99b00290  assets/index.js
908dad7a6f6bea252347be8113743a73c3268868e6445910a065530cc4429ded  index.html
abb78000457270abd1015ca212a2ed3b02b4e807e1ce02b1064abfd04e811d1f  stem.data
908dad7a6f6bea252347be8113743a73c3268868e6445910a065530cc4429ded  stem.html
0e9a5c546cceaa05b810db185eada4df348eb17b7d2e704183d12989f05fd340  stem.js
3fbf8265844b8b3e155bedd3144183ccf7f6d5b115782afdb241b5caab8fe792  stem.wasm

Licenses

GPL-3.0-or-later AND AGPL-3.0-or-later AND Apache-2.0 AND MIT AND BSD-3-Clause AND BSD-2-Clause AND ISC AND 0BSD AND Zlib AND IJG AND libpng-2.0 AND FTL AND MPL-2.0 AND BSL-1.0 AND LPPL-1.0. The license texts of everything compiled in are in LICENSES/.