60 lines
2.2 KiB
Nix
60 lines
2.2 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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cfg = config.sane.programs.alsa-ucm-conf;
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in
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{
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sane.programs.alsa-ucm-conf = {
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configOption = with lib; mkOption {
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default = {};
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type = types.submodule {
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options.preferEarpiece = mkOption {
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type = types.bool;
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default = true;
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};
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};
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};
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# upstream alsa ships with PinePhone audio configs, but they don't actually produce sound.
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# - still true as of 2024-05-26
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# - see: <https://github.com/alsa-project/alsa-ucm-conf/pull/134>
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#
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# we can substitute working UCM conf in two ways:
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# 1. nixpkgs' override for the `alsa-ucm-conf` package
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# - that forces a rebuild of ~500 packages (including webkitgtk).
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# 2. set ALSA_CONFIG_UCM2 = /path/to/ucm2 in the relevant places
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# - e.g. pulsewire service.
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# - easy to miss places, though.
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#
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# alsa-ucm-pinephone-manjaro (2024-05-26):
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# - headphones work
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# - "internal earpiece" works
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# - "internal speaker" is silent (maybe hardware issue)
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# - 3.5mm connection is flapping when playing to my car, which eventually breaks audio and requires restarting wireplumber
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# packageUnwrapped = pkgs.alsa-ucm-pinephone-manjaro.override {
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# inherit (cfg.config) preferEarpiece;
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# };
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# alsa-ucm-pinephone-pmos (2024-05-26):
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# - headphones work
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# - "internal earpiece" works
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# - "internal speaker" is silent (maybe hardware issue)
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packageUnwrapped = pkgs.alsa-ucm-pinephone-pmos.override {
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inherit (cfg.config) preferEarpiece;
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};
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sandbox.enable = false; #< only provides $out/share/alsa
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# alsa-lib package only looks in its $out/share/alsa to find runtime config data, by default.
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# but ALSA_CONFIG_UCM2 is an env var that can override that.
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# this is particularly needed by wireplumber;
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# also *maybe* pipewire and pipewire-pulse.
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# taken from <repo:nixos/mobile-nixos:modules/quirks/audio.nix>
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env.ALSA_CONFIG_UCM2 = "/run/current-system/sw/share/alsa/ucm2";
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enableFor.system = lib.mkIf (builtins.any (en: en) (builtins.attrValues cfg.enableFor.user)) true;
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};
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environment.pathsToLink = lib.mkIf cfg.enabled [
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"/share/alsa/ucm2"
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];
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}
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