minor updates

home-manager/packages.nix

@@ -4,7 +4,7 @@ let
 in
 {
   home.packages = [
-    pkgs.librewolf
+    unstable.librewolf
     pkgs.vscode-fhs
     pkgs.kitty
     pkgs.git
@@ -34,12 +34,11 @@ in
     pkgs.gcc
     pkgs.xorg.libX11
     pkgs.libGL
-    pkgs.nix-index
     pkgs.drawing
     pkgs.swaynotificationcenter
     pkgs.brightnessctl
     pkgs.pavucontrol
-    pkgs.python312
+    pkgs.python3
     pkgs.blueman
     pkgs.dnsutils
     pkgs.gnome.gnome-keyring
@@ -78,5 +77,6 @@ in
     pkgs.gdbgui
     pkgs.libreoffice-qt
     pkgs.mosh
+    pkgs.iperf3
   ];
 }