chore: drop redundant packages and options

- packages.nix is the baseline: drop neovim (nixvim), nvd, sof-firmware (enableAllFirmware), qtmultimedia (v4 leftover); vial moves to vial.nix, wl-clipboard to noctalia.nix, claude-code becomes a plain package here
- drop packages and options already provided elsewhere: noctalia (home-manager), gnupg/pinentry-qt (agent), gtk/qt themes, sddm Theme.Current, zsh plugins (home-manager), group = users, empty firewall lists
- single-package lists without `with pkgs;`, steam package inside its block

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

modules/home-manager/nixvim.nix

@@ -4,10 +4,7 @@
   programs.nixvim = {
     enable = true;
 
-    # We keep `inputs.nixvim.inputs.nixpkgs.follows = "nixpkgs"` in flake.nix so
-    # the whole config shares a single nixpkgs. Setting `source` explicitly to
-    # that same nixpkgs acknowledges the override and silences nixvim's warning
-    # about its pinned nixpkgs being bypassed.
+    # same nixpkgs as the flake's `follows`, silences nixvim's pin warning
     nixpkgs.source = inputs.nixpkgs;
 
     # set aliases
@@ -104,8 +101,6 @@
     };
   };
 
-  # install dependencies
-  home.packages = with pkgs; [
-    ripgrep
-  ];
+  # telescope live_grep
+  home.packages = [ pkgs.ripgrep ];
 }

modules/home-manager/styling.nix

@@ -1,7 +1,6 @@
 { pkgs, ... }:
 
 {
-  # set gtk theme
   gtk = {
     enable = true;
     theme = {
@@ -13,7 +12,6 @@
     gtk4.extraConfig.gtk-application-prefer-dark-theme = 1;
   };
 
-  # set qt theme
   qt = {
     enable = true;
     platformTheme.name = "qt6";
@@ -22,10 +20,4 @@
       package = pkgs.adwaita-qt;
     };
   };
-
-  # ensure packages are installed
-  home.packages = with pkgs; [
-    gnome-themes-extra
-    adwaita-qt
-  ];
 }

modules/nixos/gnupg.nix

@@ -1,29 +1,24 @@
+# A graphical pinentry never grabs the tty, so a passphrase prompt can't take
+# over a terminal driven by a coding agent. The cache lasts a working day, and
+# an unattended signature fails after two minutes instead of blocking forever.
+
 { config, pkgs, ... }:
 
 {
-  # enable gnupg agent
   programs.gnupg.agent = {
     enable = true;
-    # a graphical pinentry never grabs the tty, so a passphrase prompt can no
-    # longer take over a terminal that a coding agent is driving
     pinentryPackage = pkgs.pinentry-qt;
     settings = {
-      # keep the key unlocked for a full working day instead of 10 minutes,
-      # so signing commits asks at most once per session
       default-cache-ttl = 86400;
       max-cache-ttl = 86400;
-      # fail an unattended signature instead of blocking on a prompt forever
       pinentry-timeout = 120;
     };
   };
 
-  environment.systemPackages = with pkgs; [
-    gnupg
-    pinentry-qt
-    # fallback for sessions without a display, switch pinentryPackage to use it
-    pinentry-curses
+  environment.systemPackages = [
+    pkgs.pinentry-curses # fallback for sessions without a display
     # prime the passphrase cache on demand, e.g. before an agent session
-    (writeShellScriptBin "gpg-unlock" ''
+    (pkgs.writeShellScriptBin "gpg-unlock" ''
       echo | ${config.programs.gnupg.package}/bin/gpg --clearsign --output /dev/null
       echo "gpg key unlocked"
     '')

modules/nixos/networking.nix

@@ -1,20 +1,12 @@
 { pkgs, ... }:
 
 {
-  # user networkmanager
   networking.networkmanager.enable = true;
 
-  # firewall default configs
-  networking.firewall.allowedTCPPorts = [ ];
-  networking.firewall.allowedUDPPorts = [ ];
-
-  # enable wifi firmware
+  # wifi firmware and bluetooth
   hardware.enableAllFirmware = true;
-
-  # enable bluetooth
   hardware.bluetooth.enable = true;
 
-  # Add network-related packages
   environment.systemPackages = with pkgs; [
     wireguard-tools
     update-systemd-resolved

modules/nixos/niri.nix

@@ -1,11 +1,7 @@
 { pkgs, ... }:
 
 {
-  # just enable and install niri
+  # compositor and session; the config itself lives in home-manager
   programs.niri.enable = true;
-
-  # Add compositor-related packages
-  environment.systemPackages = with pkgs; [
-    xwayland-satellite
-  ];
+  environment.systemPackages = [ pkgs.xwayland-satellite ];
 }

modules/nixos/noctalia.nix

@@ -1,14 +1,14 @@
-{ pkgs, inputs, ... }:
+{ pkgs, ... }:
+
 {
-  # install noctalia and helper packages
+  # helpers for the noctalia shell (the shell itself comes from home-manager)
   environment.systemPackages = with pkgs; [
-    inputs.noctalia.packages.${pkgs.stdenv.hostPlatform.system}.default
     adw-gtk3
-    adwaita-qt
     adwaita-qt6
     brightnessctl
     ddcutil
     playerctl
+    wl-clipboard
     wl-mirror
   ];
 }

modules/nixos/packages.nix

@@ -1,10 +1,11 @@
 { pkgs, ... }:
 
 {
-  # system packages
+  # baseline tools for every host
   environment.systemPackages = with pkgs; [
     btop
     cifs-utils
+    claude-code
     cowsay
     dnsutils
     ethtool
@@ -14,31 +15,25 @@
     imv
     iperf3
     jq
-    kdePackages.qtmultimedia
     ldns
     lm_sensors
     lsof
     mtr
-    neovim
     nfs-utils
     nh
     nix-output-monitor
     nmap
-    nvd
     p7zip
     pciutils
     socat
-    sof-firmware
     strace
     sysstat
     tree
     unzip
     usbutils
-    vial
     vim
     wget
     which
-    wl-clipboard
     xz
     zip
     zstd

modules/nixos/sddm.nix

@@ -1,25 +1,15 @@
 { pkgs, ... }:
 
 {
-  # enable sddm and use astronaut theme
   services.displayManager.sddm = {
     enable = true;
     wayland.enable = true;
     autoNumlock = true;
     enableHidpi = true;
     theme = "sddm-astronaut-theme";
-    settings = {
-      Theme = {
-        Current = "sddm-astronaut-theme";
-      };
-    };
-    extraPackages = with pkgs; [
-      sddm-astronaut
-    ];
+    extraPackages = [ pkgs.sddm-astronaut ]; # theme's qml dependencies
   };
 
-  # Make the theme available in the system path so sddm can find it
-  environment.systemPackages = with pkgs; [
-    sddm-astronaut
-  ];
+  # sddm looks for themes in the system path
+  environment.systemPackages = [ pkgs.sddm-astronaut ];
 }

modules/nixos/steam.nix

@@ -1,20 +1,13 @@
 { pkgs, ... }:
 
 {
-  # enable steam and open firewall
   programs.steam = {
     enable = true;
+    # fix black screen when running under xwayland-satellite
+    package = pkgs.steam.override { extraArgs = "-system-composer"; };
     remotePlay.openFirewall = true;
     dedicatedServer.openFirewall = true;
     localNetworkGameTransfers.openFirewall = true;
-    # add proton-glorious-eggroll
-    extraCompatPackages = with pkgs; [
-      proton-ge-bin
-    ];
-  };
-
-  # fix black screen in steam when using xwayland-satellite
-  programs.steam.package = pkgs.steam.override {
-    extraArgs = "-system-composer";
+    extraCompatPackages = [ pkgs.proton-ge-bin ];
   };
 }

modules/nixos/thunar.nix

@@ -1,14 +1,9 @@
 { pkgs, ... }:
 
 {
-  # Enable Thunar
   programs.thunar.enable = true;
 
-  # Install Tumbler thumbnailer service
-  environment.systemPackages = with pkgs; [
-    tumbler
-  ];
-
-  # Ensure Thunar can locate the thumbnailer extensions
+  # thumbnails: tumbler service plus the path it loads extensions from
+  environment.systemPackages = [ pkgs.tumbler ];
   environment.pathsToLink = [ "share/thumbnailers" ];
 }

modules/nixos/users.nix

@@ -1,10 +1,8 @@
 { pkgs, ... }:
 
 {
-  # create users
   users.users.aaron = {
     isNormalUser = true;
-    group = "users";
     extraGroups = [
       "wheel"
       "networkmanager"
@@ -13,10 +11,6 @@
     shell = pkgs.zsh;
   };
 
-  # add default zsh config
-  programs.zsh = {
-    enable = true;
-    enableCompletion = true;
-    autosuggestions.enable = true;
-  };
+  # login shell; plugins and prompt are configured in home-manager
+  programs.zsh.enable = true;
 }

modules/nixos/vial.nix

@@ -1,26 +1,21 @@
+# Vial keyboards (lily58 pro r2g) expose a raw HID interface that vial.rocks
+# drives over WebHID; its /dev/hidraw* node is root-only by default.
+# The rule ships as 60-vial.rules because uaccess is only applied by
+# 73-seat-late.rules, and services.udev.extraRules lands at 99, too late.
+
 { pkgs, ... }:
 
 {
-  # Vial-capable keyboards (lily58 pro r2g) expose a second, non-keyboard raw
-  # HID interface that vial.rocks drives over WebHID. Its /dev/hidraw* node is
-  # root-only by default, so neither chromium nor the native app can open it.
-  #
-  # This has to ship as a numbered rules file rather than via
-  # services.udev.extraRules: extraRules lands in 99-local.rules, but the
-  # builtin that turns TAG+="uaccess" into an actual ACL is invoked from
-  # systemd's 73-seat-late.rules. A tag set at 99 is set too late to be seen,
-  # so the device ends up correctly tagged and still unreadable. 60- sorts
-  # safely ahead of 73.
   services.udev.packages = [
     (pkgs.writeTextFile {
       name = "vial-udev-rules";
       destination = "/lib/udev/rules.d/60-vial.rules";
-      # Vial firmware advertises itself through a magic USB serial, so this
-      # matches any vial board rather than just the lily58. uaccess hands the
-      # device to whoever owns the active seat, no group membership needed.
+      # the magic serial matches any vial board; uaccess grants the seat owner
       text = ''
         KERNEL=="hidraw*", SUBSYSTEM=="hidraw", ATTRS{serial}=="*vial:f64c2b3c*", TAG+="uaccess"
       '';
     })
   ];
+
+  environment.systemPackages = [ pkgs.vial ];
 }