tools: add wasm (web) target to custom-app packaging#2130
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Custom ossia score apps could be packaged for Linux/macOS/Windows but not for the browser. Add a wasm path so a custom QML UI + score can be deployed as a static web bundle: - create-app-wasm.sh: assembles a servable site. It sources the score wasm runtime (a --local-installer dir/zip, an ossia.score-*-wasm.zip release asset, or the ossia/score-web continuous build), lays the QML tree under /app/qml and the score under /app/, compiles an optional .qrc to resources.rcc, and generates preload.json + index.html that call qtLoad() with the right arguments (--ui /app/qml/<Main>.qml <score> --autoplay) and Qt's official preload mechanism to populate the Emscripten filesystem. - create-app.sh: wire the 'wasm' platform into the dispatch and help text. - wasm.yaml: also zip the built site/ into ossia.score-<ver>-wasm.zip and upload it to the continuous/tag release, so the wasm build is downloadable like every other platform (previously it was only pushed to the score-web repo). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019oPj1zRcxSQX7FNni7EHM6
This was referenced Jul 19, 2026
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Custom ossia score apps (the
ossia-templates/score-custom-app-templateflow) could be packaged for Linux/macOS/Windows but not for the browser. This adds a wasm path so a custom QML UI + score can be deployed as a static web bundle.Changes
tools/create-app-wasm.sh(new) — assembles a servable site:--local-installer(dir or.zip), anossia.score-*-wasm.ziprelease asset, or theossia/score-webcontinuous build./app/qml, the score under/app/, compiles an optional.qrc→resources.rcc.preload.json+index.htmlusing Qt's officialqtLoad({ arguments, qt: { preload, environment } })mechanism (--ui /app/qml/<Main>.qml <score> --autoplay), populating the Emscripten FS at startup.tools/create-app.sh— wire thewasmplatform into dispatch + help..github/workflows/wasm.yaml— also zip the assembledsite/intoossia.score-<ver>-wasm.zipand upload to the continuous/tag release, so the wasm build is downloadable like every other platform (previously only pushed toscore-web).Verified
Ran
create-app.sh --platform wasmon the real custom-app template (both--local-installerdir and zip sources). Served the generated bundle in a browser: the full QtQuick.Controls UI loads, theScore.UI.TextureSourcerenders live gfx (a running score gfx node) into the Qt Quick scene graph,PortSourceshows live values, audio plays, no crash.Note: a companion one-line change is needed in
ossia/actions(package-custom-appsparse-checkout must includetools/create-app-wasm.sh) for the GitHub Action to use this.🤖 Generated with Claude Code