mpd/ncmpcpp: Add dynamic color palette support

users/simon/modules/mpd.nix

@@ -29,7 +29,25 @@ lib.mkIf nixosConfig.sbruder.gui.enable {
 
   programs.ncmpcpp = {
     enable = true;
-    package = pkgs.ncmpcpp.override { visualizerSupport = true; taglibSupport = false; };
+    package = (pkgs.ncmpcpp.override {
+      visualizerSupport = true;
+      taglibSupport = false;
+    }).overrideAttrs (o: o // {
+      nativeBuildInputs = o.nativeBuildInputs ++ (with pkgs; [ makeWrapper ]);
+
+      # !!! HACK: ncurses uses terminfo’s rs1 for alacritty (\033c\033]104\007)
+      # to reset the terminal when the window is resized. For achieving the
+      # required effect (clearing the terminal), \033c would be enough.
+      # \033]104\007 additionally resets colours set by dynamic-colors. This
+      # makes text written in those colours almost unreadable. Since xterm only
+      # uses \033c to reset the terminal and does not make ncmpcpp misbehave in
+      # alacritty, this wrapper tricks ncurses into thinking it is running in
+      # xterm.
+      postInstall = ''
+        wrapProgram $out/bin/ncmpcpp \
+            --run '[ "$TERM" = "alacritty" ] && export TERM="xterm"'
+      '';
+    });
     mpdMusicDir = null; # does not work (not of type `null or path')
     settings = {
       # Connection