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fix: unnecessary PulseAudio deps and clarify backend fallthrough #893

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yara-blue merged 1 commit into from
Jun 14, 2026
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fix: unnecessary PulseAudio deps and clarify backend fallthrough #893

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7 changes: 4 additions & 3 deletions README.md
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Expand Up @@ -38,10 +38,11 @@ Rodio will keep a rolling MSRV (minimum supported rust version) policy of at lea

## Dependencies (Linux only)

Rodio uses `cpal` for audio playback and recording. The following development libraries are required on Linux:
Rodio uses `cpal` for audio playback and recording. On Linux, cpal tries audio hosts in the order **PipeWire > PulseAudio > ALSA**, falling back to the next whenever a host is not compiled in (its feature is disabled) or not available at runtime. **ALSA** (`libasound2-dev` on Debian/Ubuntu, `alsa-lib-devel` on Fedora) is always required as the base audio layer.

- **ALSA** (`libasound2-dev` on Debian/Ubuntu, `alsa-lib-devel` on Fedora): always required as the base audio layer.
- **PulseAudio** (`libpulse-dev` on Debian/Ubuntu, `pulseaudio-libs-devel` on Fedora): required when the `pulseaudio` feature is enabled, which it is by default.
The `pulseaudio` feature, which is enabled by default, does not require any development libraries because the `pulseaudio-rs` crate is pure Rust.

The optional `pipewire` feature enables more direct interfacing with PipeWire systems, but unlike `pulseaudio` it does require development libraries (`libpipewire-0.3-dev` and `libdbus-1-dev` on Debian/Ubuntu).

### Minimal build

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