moby: ship alsa w/o the "voice call" configs, since they dont produce any audio

hosts/common/programs/calls.nix

@@ -110,7 +110,7 @@ in
     # this is only the username/endpoint: the actual password appears to be stored in gnome-keyring
     secrets.".config/calls/sip-account.cfg" = ../../../secrets/common/gnome_calls_sip-account.cfg.bin;
     suggestedPrograms = [
-      "callaudiod"  # runtime dependency (optional, but probably needed for mic muting?)
+      "callaudiod"  # runtime dependency (optional; without this the mute and speaker buttons do not work (ordinarily they function by changing the GLOBAL audio config))
       "feedbackd"  # needs `phone-incoming-call`, in particular
       "gnome-keyring"  # to remember the password
     ];

hosts/modules/hal/pine64-pinephone-pro/default.nix

@@ -40,6 +40,9 @@ in
     sane.programs.swaynotificationcenter.config = {
       backlight = "backlight";  # /sys/class/backlight/*backlight*/brightness
     };
+    # XXX(2024/10/18): callaudiod changes the global audio config; this requires alsa configs to be 100% right,
+    # else it'll change to something which produces no sound (like the "Voice Call" use case)
+    # sane.programs.callaudiod.enableFor.user.colin = lib.mkForce false;
 
     boot.kernelPatches = [
       {

pkgs/by-name/pine64-alsa-ucm/package.nix

@@ -1,6 +1,9 @@
 {
   fetchFromGitLab,
+  gnused,
+  lib,
   stdenv,
+  withVoiceCall ? false,  #< enable the "Voice Call" audio variants, which frequently don't work and idk what they're *supposed* to do
 }:
 stdenv.mkDerivation {
   pname = "pine64-alsa-ucm";
@@ -13,7 +16,17 @@ stdenv.mkDerivation {
     hash = "sha256-nsZXBB5VpF0YpfIS+/SSHMlPXSyIGLZSOkovjag8ifU=";
   };
 
-  dontBuild = true;
+  nativeBuildInputs = lib.optionals (!withVoiceCall) [
+    gnused
+  ];
+
+  buildPhase = lib.optionalString (!withVoiceCall) ''
+    sed -e '/SectionUseCase."Voice Call"/,+3d' -i ucm2/PinePhone/PinePhone.conf
+    rm ucm2/PinePhone/VoiceCall.conf
+
+    sed -e '/SectionUseCase."Voice Call"/,+3d' -i ucm2/PinePhonePro/PinePhonePro.conf
+    rm ucm2/PinePhonePro/VoiceCall.conf
+  '';
 
   installPhase = ''
     runHook preInstall
@@ -36,11 +49,11 @@ stdenv.mkDerivation {
 
     substituteInPlace $out/share/alsa/ucm2/Allwinner/A64/PinePhone/PinePhone.conf \
       --replace-fail '"HiFi.conf"' '"/Allwinner/A64/PinePhone/HiFi.conf"' \
-      --replace-fail '"VoiceCall.conf"' '"/Allwinner/A64/PinePhone/VoiceCall.conf"'
+      ${lib.optionalString withVoiceCall ''--replace-fail '"VoiceCall.conf"' '"/Allwinner/A64/PinePhone/VoiceCall.conf"' ''}
 
     substituteInPlace $out/share/alsa/ucm2/Rockchip/rk3399/PinePhonePro/PinePhonePro.conf \
       --replace-fail '"HiFi.conf"' '"/Rockchip/rk3399/PinePhonePro/HiFi.conf"' \
-      --replace-fail '"VoiceCall.conf"' '"/Rockchip/rk3399/PinePhonePro/VoiceCall.conf"'
+      ${lib.optionalString withVoiceCall ''--replace-fail '"VoiceCall.conf"' '"/Rockchip/rk3399/PinePhonePro/VoiceCall.conf"' ''}
 
     runHook postFixup
   '';