diff --git a/base.nix b/base.nix
index d7ecb54..3e38d40 100644
--- a/base.nix
+++ b/base.nix
@@ -50,6 +50,7 @@
   nix.settings.allowed-users = [ "*" ]; # default
   #nix.settings.allowed-users = [ "@nixbld" "@builders" ]; # TODO: this
   nix.settings.trusted-users = [ "root" "@wheel" ];
+  nix.settings.keep-derivations = true; # great with nix-diff
   nix.settings.auto-optimise-store = true; # deduplicate with hardlinks, expensive. Alternative: nix-store --optimise
   #nix.optimize.automatic = true;           # periodic optimization
   nix.gc.automatic = true;
diff --git a/hardware/gpu/cuda.nix b/hardware/gpu/cuda.nix
index ca8e0b1..f9483c9 100644
--- a/hardware/gpu/cuda.nix
+++ b/hardware/gpu/cuda.nix
@@ -64,9 +64,9 @@
     #'')
   ]);
 
-
   # nvidia bad
   nixpkgs.config.packageOverrides = (pkgs: {
+    /** /
     teams = pkgs.teams.overrideAttrs (old: rec {
       postInstall = (old.postInstall or "") + ''
         substituteInPlace $out/share/applications/teams.desktop \
@@ -74,6 +74,7 @@
       '';
       #  --replace 'Exec=teams' 'Exec=teams --disable-gpu'
     });
+    /**/
     discord = pkgs.discord.overrideAttrs (old: rec {
       desktopItem = old.desktopItem.override (old: {
         #exec = "env NIXOS_OZONE_WL=1 ${old.exec}";
@@ -83,6 +84,7 @@
         ln -sf "${desktopItem}/share/applications" $out/share/
       '' + old.postInstall;
     });
+    /** /
     slack = pkgs.slack.overrideAttrs (old: {
       postInstall = old.postInstall or "" + ''
         substituteInPlace $out/share/applications/slack.desktop \
@@ -97,6 +99,6 @@
         exec = "element-desktop --use-gl=desktop %u";
       });
     });
+    /**/
   });
-
 }
diff --git a/users/pbsds/home/default.nix b/users/pbsds/home/default.nix
index 2d19ece..9ec30be 100644
--- a/users/pbsds/home/default.nix
+++ b/users/pbsds/home/default.nix
@@ -2,7 +2,7 @@
 { pkgs, config, ... }:
 {
   #nixpkgs.config.allowUnfree = true;
-  home.stateVersion  = "22.11"; # TODO: what uses this?
+  home.stateVersion  = "23.05";
 
   imports = [
     ./profiles/sops.nix
diff --git a/users/pbsds/home/profiles/desktop.nix b/users/pbsds/home/profiles/desktop.nix
index 6a13d6d..e26f6fb 100644
--- a/users/pbsds/home/profiles/desktop.nix
+++ b/users/pbsds/home/profiles/desktop.nix
@@ -21,7 +21,19 @@
   ];
 
   home.packages = with pkgs; [
-    wl-clipboard
+    #wl-clipboard # https://github.com/bugaevc/wl-clipboard/issues/185
+    (symlinkJoin {
+      inherit (wl-clipboard) name;
+      paths = [
+        (writeShellScriptBin "wl-copy" ''
+          timeout 0.25s ${lib.getExe' wl-clipboard "wl-copy"} "$@"
+        '')
+        (writeShellScriptBin "wl-paste" ''
+          timeout 0.25s ${lib.getExe' wl-clipboard "wl-paste"} "$@"
+        '')
+        wl-clipboard
+      ];
+    })
 
     discord
     element-desktop
@@ -30,6 +42,8 @@
     slack
     telegram-desktop
 
+    (pkgs.zxtune or null)
+
     f3d
     firefox
     zotero
diff --git a/users/pbsds/home/profiles/git.nix b/users/pbsds/home/profiles/git.nix
index ba350a1..0d06b0a 100644
--- a/users/pbsds/home/profiles/git.nix
+++ b/users/pbsds/home/profiles/git.nix
@@ -4,6 +4,7 @@
     git
     gh
     hub
+    colordiff
   ];
 
   #programs.git.gitui.enable = true;
diff --git a/users/pbsds/home/profiles/mpv.nix b/users/pbsds/home/profiles/mpv.nix
index d83b2f9..c4a27f2 100644
--- a/users/pbsds/home/profiles/mpv.nix
+++ b/users/pbsds/home/profiles/mpv.nix
@@ -1,17 +1,34 @@
-{ pkgs, flakes, ... }:
+{ lib, pkgs, flakes, ... }:
+
+let
+  m = pkgs.mpvScripts;
+  a4k = lib.mkIf (m ? anime4k);
+in
+
 {
   #home.packages = with pkgs; [ mpv ];
 
   programs.mpv.enable = true;
   programs.mpv.bindings."n"       = "sub-seek  1";
   programs.mpv.bindings."SHIFT+n" = "sub-seek -1";
-  programs.mpv.bindings."b"       = ''cycle-values audio-channels 2 "auto"'';
+  programs.mpv.bindings."b"       = ''cycle-values audio-channels 2 5 7 "auto"'';
 
-  programs.mpv.scripts = with pkgs.mpvScripts; [
-    #thumbnail # TOO SLOW
-    thumbfast
-    mpris
-    (pkgs.mpvScripts.mpv-webm or flakes.self.pkgs.mpv-webm) # activate with SHIFT+W
+  # m.anime4k - from https://github.com/NixOS/nixpkgs/pull/273830
+  # TODO: add to home-manager?
+  programs.mpv.bindings."CTRL+0" = a4k ''no-osd change-list glsl-shaders clr ""; show-text "GLSL shaders cleared"'';
+  programs.mpv.bindings."CTRL+1" = a4k ''no-osd change-list glsl-shaders set "${m.anime4k}/Anime4K_Clamp_Highlights.glsl:${m.anime4k}/Anime4K_Restore_CNN_VL.glsl:${m.anime4k}/Anime4K_Upscale_CNN_x2_VL.glsl:${m.anime4k}/Anime4K_AutoDownscalePre_x2.glsl:${m.anime4k}/Anime4K_AutoDownscalePre_x4.glsl:${m.anime4k}/Anime4K_Upscale_CNN_x2_M.glsl"; show-text "Anime4K: Mode A (HQ)"'';
+  programs.mpv.bindings."CTRL+2" = a4k ''no-osd change-list glsl-shaders set "${m.anime4k}/Anime4K_Clamp_Highlights.glsl:${m.anime4k}/Anime4K_Restore_CNN_Soft_VL.glsl:${m.anime4k}/Anime4K_Upscale_CNN_x2_VL.glsl:${m.anime4k}/Anime4K_AutoDownscalePre_x2.glsl:${m.anime4k}/Anime4K_AutoDownscalePre_x4.glsl:${m.anime4k}/Anime4K_Upscale_CNN_x2_M.glsl"; show-text "Anime4K: Mode B (HQ)"'';
+  programs.mpv.bindings."CTRL+3" = a4k ''no-osd change-list glsl-shaders set "${m.anime4k}/Anime4K_Clamp_Highlights.glsl:${m.anime4k}/Anime4K_Upscale_Denoise_CNN_x2_VL.glsl:${m.anime4k}/Anime4K_AutoDownscalePre_x2.glsl:${m.anime4k}/Anime4K_AutoDownscalePre_x4.glsl:${m.anime4k}/Anime4K_Upscale_CNN_x2_M.glsl"; show-text "Anime4K: Mode C (HQ)"'';
+  programs.mpv.bindings."CTRL+4" = a4k ''no-osd change-list glsl-shaders set "${m.anime4k}/Anime4K_Clamp_Highlights.glsl:${m.anime4k}/Anime4K_Restore_CNN_VL.glsl:${m.anime4k}/Anime4K_Upscale_CNN_x2_VL.glsl:${m.anime4k}/Anime4K_Restore_CNN_M.glsl:${m.anime4k}/Anime4K_AutoDownscalePre_x2.glsl:${m.anime4k}/Anime4K_AutoDownscalePre_x4.glsl:${m.anime4k}/Anime4K_Upscale_CNN_x2_M.glsl"; show-text "Anime4K: Mode A+A (HQ)"'';
+  programs.mpv.bindings."CTRL+5" = a4k ''no-osd change-list glsl-shaders set "${m.anime4k}/Anime4K_Clamp_Highlights.glsl:${m.anime4k}/Anime4K_Restore_CNN_Soft_VL.glsl:${m.anime4k}/Anime4K_Upscale_CNN_x2_VL.glsl:${m.anime4k}/Anime4K_AutoDownscalePre_x2.glsl:${m.anime4k}/Anime4K_AutoDownscalePre_x4.glsl:${m.anime4k}/Anime4K_Restore_CNN_Soft_M.glsl:${m.anime4k}/Anime4K_Upscale_CNN_x2_M.glsl"; show-text "Anime4K: Mode B+B (HQ)"'';
+  programs.mpv.bindings."CTRL+6" = a4k ''no-osd change-list glsl-shaders set "${m.anime4k}/Anime4K_Clamp_Highlights.glsl:${m.anime4k}/Anime4K_Upscale_Denoise_CNN_x2_VL.glsl:${m.anime4k}/Anime4K_AutoDownscalePre_x2.glsl:${m.anime4k}/Anime4K_AutoDownscalePre_x4.glsl:${m.anime4k}/Anime4K_Restore_CNN_M.glsl:${m.anime4k}/Anime4K_Upscale_CNN_x2_M.glsl"; show-text "Anime4K: Mode C+A (HQ)"'';
+  /**/
+
+  programs.mpv.scripts = [
+    #m.thumbnail # TOO SLOW
+    m.thumbfast
+    m.mpris
+    (m.mpv-webm or flakes.self.pkgs.mpv-webm) # activate with SHIFT+W
     # from https://github.com/mpv-player/mpv/issues/9767#issuecomment-1024831645
     ({ scriptName = "dynamic-subs.lua"; } // (pkgs.writeTextDir "share/mpv/scripts/dynamic-subs.lua" ''
       mp.add_hook('on_load', 10, function()