From 3726ba4f1170e62b92f780e697b5c65281447452 Mon Sep 17 00:00:00 2001
From: ChUrl <christoph.urlacher@protonmail.com>
Date: Sun, 7 Aug 2022 18:42:28 +0200
Subject: [PATCH] add audio module

---
 home/home.nix          | 45 ++++++++++--------------
 home/modules/audio.nix | 78 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 96 insertions(+), 27 deletions(-)
 create mode 100644 home/modules/audio.nix

diff --git a/home/home.nix b/home/home.nix
index 2cd85ffd..48a58bc6 100644
--- a/home/home.nix
+++ b/home/home.nix
@@ -11,26 +11,29 @@ rec {
     # Feel free to split up your configuration and import pieces of it here.
 
     ./modules/emacs.nix
+    ./modules/audio.nix
 
     # inputs.nixvim.homeManagerModules.nixvim
   ];
 
   # Config my modules
-  modules = {
-    emacs.enable = true;
-    emacs.useDoom = true;
-    emacs.autosync = true;
+  modules.emacs = {
+    enable = true;
+    useDoom = true;
+    autosync = true;
+  };
+
+  modules.audio = {
+    enable = true;
+    carla = true;
+    yabridge.enable = true;
+    yabridge.autosync = true;
   };
 
   # TODO: Email
   # TODO: Run noisetorch as login script
   # TODO: Gnome terminal config
 
-  # TODO: Update flatpak on rebuild? Make a setting/module for this, emacs update and yabridgectl update... Use home.activation...
-  home.activation.syncYabridge = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
-    yabridgectl sync
-  '';
-
   # Disabled since HomeManager should use global pkgs
   # https://github.com/nix-community/home-manager/issues/2942
   # nixpkgs.config.allowUnfreePredicate = (pkg: true);
@@ -49,6 +52,8 @@ rec {
   # NOTE: I don't think I need this anymore as all fonts are installed through the system config but let's keep this just in case
   fonts.fontconfig.enable = true; # Also updates the font-cache
 
+  # TODO: Add to flatpak module
+  # TODO: Update flatpak on rebuild?
   # We link like this to be able to address the absolute location, also the fonts won't get copied to store
   # NOTE: This path contains all the fonts because fonts.fontDir.enable is true
   home.activation.linkFontDir = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
@@ -63,7 +68,6 @@ rec {
       ln -sf /etc/profiles/per-user/christoph/share/icons ${home.homeDirectory}/.local/share/icons
     fi
   '';
-
   # Allow access to linked fonts/icons
   home.file.".local/share/flatpak/overrides/global".text = ''
     [Context]
@@ -89,19 +93,7 @@ rec {
     in
       formatted;
 
-  # TODO: Music module
-  # NOTE: This desktop entry is created in /etc/profiles/per-user/christoph/share/applications
-  #       This location is part of XDG_DATA_DIRS
-  xdg.desktopEntries.guitar = {
-    name = "Guitar Amp (Carla)";
-    genericName = "Guitar Amp Simulation";
-    icon = "carla";
-    exec = "env PIPEWIRE_LATENCY=256/48000 gamemoderun carla ${home.homeDirectory}/Documents/Carla/GuitarDefault.carxp";
-    terminal = false;
-    categories = [ "Music" "Audio" ];
-  };
-
-  # TODO: Does this has to be set manually or is it set by flatpak.enable?
+  # NOTE: Is set by flatpak.enable
   # xdg.systemDirs.data = [
   #   "/var/lib/flatpak/exports/share"
   #   "${home.homeDirectory}/.local/share/flatpak/exports/share"
@@ -273,13 +265,12 @@ rec {
     # godot
 
     # Audio
-    # TODO: Make a module, autosync yabridge on rebuild?
     # vcv-rack
     bitwig-studio
     # audacity
-    carla
-    yabridge
-    yabridgectl
+    # Module carla
+    # Module yabridge
+    # Module yabridgectl
 
     # Use NixCommunity binary cache
     cachix
diff --git a/home/modules/audio.nix b/home/modules/audio.nix
new file mode 100644
index 00000000..edc813f7
--- /dev/null
+++ b/home/modules/audio.nix
@@ -0,0 +1,78 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.modules.audio;
+in {
+  imports = [ ];
+
+  options.modules.audio = {
+    enable = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Configure for realtime audio and enable a bunch of music production tools";
+    };
+
+    carla = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Enable Carla + guitar-specific stuff";
+    };
+
+    yabridge = {
+      enable = {
+        type = types.bool;
+        default = false;
+        description = "Enable yabridge + yabridgectl";
+      };
+
+      autosync = {
+        type = types.bool;
+        default = false;
+        description = "Sync yabridge plugins on nixos-rebuild";
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+
+    home.packages = with pkgs; (mkMerge [
+      (mkIf cfg.carla [ carla ])
+
+      (mkIf cfg.yabridge.enable [ yabridge yabridgectl ])
+    ]);
+
+
+    # NOTE: This desktop entry is created in /etc/profiles/per-user/christoph/share/applications
+    #       This location is part of XDG_DATA_DIRS
+    xdg.desktopEntries.guitar = mkIf cfg.carla {
+      name = "Guitar Amp (Carla)";
+      genericName = "Guitar Amp Simulation";
+      icon = "carla";
+      exec = "env PIPEWIRE_LATENCY=256/48000 gamemoderun carla ${home.homeDirectory}/.config/carla/GuitarDefault.carxp";
+      terminal = false;
+      categories = [ "Music" "Audio" ];
+    };
+
+    home.activation = (mkMerge [
+      (mkIf cfg.carla {
+
+        # The module includes the default carla project with ArchetypePetrucci + ArchetypeGojira
+        # TODO: I don't know if I should keep this
+        linkCarlaConfig = hm.dag.entryAfter [ "writeBoundary" ] ''
+          if [ ! -L "${config.home.homeDirectory}/.config/carla" ]; then
+            ln -sf ${config.home.homeDirectory}/NixFlake/config/carla ${config.home.homeDirectory}/.config/carla
+          fi
+        '';
+      })
+
+      (mkIf cfg.yabridge.autosync {
+        syncYabridge = hm.dag.entryAfter [ "writeBoundary" ] ''
+          yabridgectl sync
+        '';
+      })
+    ]);
+
+  };
+}