The audio role had both pipewire (with pulse.enable = true) and
pulseaudio configured, which are mutually exclusive. PipeWire's
PulseAudio compatibility layer handles pulse clients, so the
services.pulseaudio block is unnecessary and causes conflicts.
Closes: nixos-configs-0vf
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>