Pedalboard #4288

its-javierjimenez · 2024-11-01T16:55:24Z

its-javierjimenez
Nov 1, 2024

Answered by ndonkoHenri

Spotify's pedalboard can't be packaged for Flet mobile:

No source distribution on PyPi, so there's nothing for Flet's mobile build to cross-compile.
It bundles the full JUCE framework, including its desktop GUI modules (juce_gui_basics/juce_graphics/juce_gui_extra), which assume a windowing system (Cocoa/X11) and pull desktop system libs (X11, freetype, ALSA). These would have to be stripped/stubbed just to build.
Its headline feature — VST3/AU plugin hosting — dlopens native plugin binaries at runtime, which don't exist and can't be loaded on iOS/Android. (License is also GPLv3)

A possible alternative could be to run pedalboard on a backend service and stream the result to the app.

ndonkoHenri · 2026-07-02T17:58:29Z

Spotify's pedalboard can't be packaged for Flet mobile:

No source distribution on PyPi, so there's nothing for Flet's mobile build to cross-compile.
It bundles the full JUCE framework, including its desktop GUI modules (juce_gui_basics/juce_graphics/juce_gui_extra), which assume a windowing system (Cocoa/X11) and pull desktop system libs (X11, freetype, ALSA). These would have to be stripped/stubbed just to build.
Its headline feature — VST3/AU plugin hosting — dlopens native plugin binaries at runtime, which don't exist and can't be loaded on iOS/Android. (License is also GPLv3)

A possible alternative could be to run pedalboard on a backend service and stream the result to the app.

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