Revert "cmus: remove cmusfm"

This reverts commit 3ec9a35d67.

nix/homeModules/common/cmus/default.nix

@@ -4,11 +4,13 @@
   ...
 }: {
   programs.cmus.extraConfig = let
-    # Dispatch to multiple callbacks (if needed)
-    # Right now only notify-send is called
+    # dispatch to multiple callbacks
     callback-script = pkgs.writeShellApplication {
       name = "cmus-callback-script";
-      runtimeInputs = [pkgs.libnotify];
+      runtimeInputs = [
+        pkgs.cmusfm
+        pkgs.libnotify
+      ];
       text = ''
         # All keys contain only chars a-z. Values are UTF-8 strings.
         #
@@ -17,9 +19,8 @@
         #   - file or url is given only if track is 'loaded' in cmus
         #   - other keys/values are given only if they are available
 
-        # Keep a copy of arguments
-        # argv=("$@")
-
+        # Use a map so that we can redirect all the args to cmusfm
+        argv=("$@")
         declare -A map
         while [ $# -gt 0 ]; do
           map["$1"]="$2"
@@ -40,22 +41,26 @@
         notify-send \
           "$SYMB ''${map[title]}"  \
           "''${map[artist]} / ''${map[album]}"
+        cmusfm "''${argv[@]}"
       '';
     };
   in
     (builtins.readFile ./rc)
-    + lib.optionalString pkgs.stdenv.isLinux ''
+    + (lib.optionalString pkgs.stdenv.isLinux ''
       set status_display_program=${lib.getExe callback-script}
-    ''
+    '')
+    + (lib.optionalString pkgs.stdenv.isDarwin ''
+      set status_display_program=${lib.getExe pkgs.cmusfm}
+    '')
     # This handles volume better
     # Alsa backend has this behavior where system volume button will unsync two channels
-    + lib.optionalString pkgs.stdenv.isLinux ''
+    + (lib.optionalString pkgs.stdenv.isLinux ''
       set output_plugin=pulse
-    ''
+    '')
     # When switching over bluetooth, toggle the output device to coreaudio
     # and back to ao would fix the no sound issue.
-    + lib.optionalString pkgs.stdenv.isDarwin ''
+    + (lib.optionalString pkgs.stdenv.isDarwin ''
       # distortion fix https://github.com/cmus/cmus/issues/1130#issuecomment-1003324193
       set output_plugin=ao
-    '';
+    '');
 }