Merge remote; add nix auto-GC and CLAUDE.md

Resolves conflict with upstream tmux/blender additions (already covered
by the per-program restructure). Adds weekly nix GC (--delete-older-than 7d),
store auto-optimise, and project CLAUDE.md.

CLAUDE.md

@@ -0,0 +1,46 @@
+# NixOS Dotfiles
+
+## Directory Layout
+
+```
+flake.nix                        # entry point, defines hosts
+hosts/
+  hivebrain/                     # marvin's main machine
+  nikita-nixos/                  # nikita's machine
+home/
+  packages-base.nix              # universal packages every host gets (neovim, ripgrep, etc.)
+  programs/                      # one file per installable program
+  fonts.nix                      # font config
+  rofi.nix                       # rofi config + packages
+  symlinks.nix                   # home-manager symlinks
+  tmux.nix                       # tmux config
+  yazi.nix                       # yazi config
+  zsh.nix                        # zsh config
+system/                          # NixOS system-level modules
+```
+
+## Adding a New Program
+
+1. Create `home/programs/<name>.nix`:
+
+```nix
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.<package-name> ];
+}
+```
+
+The filename is the program name; the package attribute can differ (e.g. `godot.nix` uses `pkgs.godot_4`).
+
+2. Add the import to whichever hosts should have it in `hosts/<host>/home.nix`:
+
+```nix
+../../home/programs/<name>.nix
+```
+
+## Rules
+
+- `home/packages-base.nix` — shared baseline, imported by every host. Only add truly universal tools here (shell utilities, editors).
+- `home/programs/` — one file per program. Hosts opt in by importing.
+- `home/<tool>.nix` (tmux, zsh, rofi, etc.) — for programs that need configuration beyond just installing a package. Same opt-in pattern via host imports.
+- `system/` modules are NixOS system-level config (not home-manager). Add them to `hosts/<host>/default.nix`.

config/qtile/config.py

@@ -60,6 +60,9 @@ keys = [
         lazy.spawn('sh -c "maim -s | xclip -selection clipboard -t image/png -i"'),
         desc="Screenshot"
     ),
+    Key([mod], "F6", lazy.spawn("wpctl set-volume -l 1.0 @DEFAULT_AUDIO_SINK@ 5%+"), desc="Volume up 5%"),
+    Key([mod], "F5", lazy.spawn("wpctl set-volume @DEFAULT_AUDIO_SINK@ 5%-"), desc="Volume down 5%"),
+    Key([mod], "F4", lazy.spawn("wpctl set-mute @DEFAULT_AUDIO_SINK@ toggle"), desc="Mute toggle"),
 ]
 
 # Add key bindings to switch VTs in Wayland.
@@ -229,7 +232,7 @@ def make_top_bar(primary=False):
             format = 'Mem: {MemUsed:.0f}{mm}',
         ),
         make_sep(),
-        widget.Volume(
+        widget.PulseVolume(
             foreground = colors[7],
             padding = 8,
             fmt = 'Vol: {}',
@@ -249,8 +252,8 @@ def make_top_bar(primary=False):
 
 
 screens = [
-    Screen(top = make_top_bar()),
     Screen(top = make_top_bar(primary=True)),
+    Screen(top = make_top_bar()),
 ]
 
 # Drag floating layouts.

home/packages-marvin.nix

@@ -1,23 +0,0 @@
-{ pkgs, ... }:
-
-{
-  home.packages = with pkgs; [
-    alacritty
-    claude-code
-    fd
-    fzf
-    gcc
-    lazygit
-    lua-language-server
-    nil
-    nixpkgs-fmt
-    nodejs
-    obsidian
-    pkg-config
-    rustup
-    steam
-    vesktop
-    xclip
-    xwallpaper
-  ];
-}

home/programs/alacritty.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.alacritty ];
+}

home/programs/audacity.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.audacity ];
+}

home/programs/blender.nix

@@ -1,5 +1,4 @@
 { pkgs, ... }:
-
 {
   home.packages = [ pkgs.blender ];
 }

home/programs/blockbench.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.blockbench ];
+}

home/programs/claude-code.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.claude-code ];
+}

home/programs/fd.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.fd ];
+}

home/programs/filezilla.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.filezilla ];
+}

home/programs/fzf.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.fzf ];
+}

home/programs/gcc.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.gcc ];
+}

home/programs/godot.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.godot_4 ];
+}

home/programs/imv.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.imv ];
+}

home/programs/jdk.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.jdk21 ];
+}

home/programs/jetbrains-toolbox.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.jetbrains-toolbox ];
+}

home/programs/lazygit.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.lazygit ];
+}

home/programs/lua-language-server.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.lua-language-server ];
+}

home/programs/mpv.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.mpv ];
+}

home/programs/nil.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.nil ];
+}

home/programs/nixpkgs-fmt.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.nixpkgs-fmt ];
+}

home/programs/nodejs.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.nodejs ];
+}

home/programs/obsidian.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.obsidian ];
+}

home/programs/pkg-config.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.pkg-config ];
+}

home/programs/prismlauncher.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.prismlauncher ];
+}

home/programs/rustup.nix

@@ -0,0 +1,39 @@
+{ pkgs, ... }:
+{
+  home.packages = with pkgs; [
+    rustup
+    sqlx-cli
+    openssl.dev
+
+    # Bevy / Wayland runtime deps
+    wayland
+    wayland-protocols
+    libxkbcommon
+    libGL
+    vulkan-loader
+    alsa-lib
+    udev
+    libx11
+    libxcursor
+    libxi
+    libxrandr
+    libxcb
+  ];
+
+  home.sessionVariables.PKG_CONFIG_PATH = "${pkgs.openssl.dev}/lib/pkgconfig";
+
+  # ponytail: global LD_LIBRARY_PATH so `cargo run` finds these without a shell.nix
+  home.sessionVariables.LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath (with pkgs; [
+    wayland
+    libxkbcommon
+    libGL
+    vulkan-loader
+    alsa-lib
+    udev
+    libx11
+    libxcursor
+    libxi
+    libxrandr
+    libxcb
+  ]);
+}

home/programs/vesktop.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.vesktop ];
+}

home/programs/xclip.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.xclip ];
+}

home/programs/xwallpaper.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.xwallpaper ];
+}

home/programs/yt-dlp.nix

@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.yt-dlp ];
+}

home/tmux.nix

@@ -45,7 +45,7 @@
       bind-key -T copy-mode-vi y send -X copy-pipe-and-cancel 'xclip -selection clipboard -i'
 
       # Default layout on new session: main + right pane (~20%) + bottom pane (~15%)
-      set-hook -g session-created 'split-window -h -l 20% -c "#{pane_current_path}" ; select-pane -t 0 ; split-window -v -l 15% -c "#{pane_current_path}" ; select-pane -t 0'
+      set-hook -g session-created 'split-window -v -l 15% -c "#{pane_current_path}" ; select-pane -t 1 ; split-window -h -l 20% -c "#{pane_current_path}" ; select-pane -t 1'
     '';
   };
 }

hosts/hivebrain/default.nix

@@ -13,14 +13,18 @@
     ../../system/ssh.nix
     ../../system/programs.nix
     ../../system/packages.nix
+    ../../system/docker.nix
 
     # marvin-only
     ../../system/xserver.nix
     ../../system/picom.nix
     ../../system/display-managers/ly.nix
     ../../system/users/marvin.nix
+    ../../system/clam.nix
   ];
 
   networking.hostName = "hivebrain";
   system.stateVersion = "26.05";
+
+  programs.steam.enable = true;
 }

hosts/hivebrain/home.nix

@@ -7,10 +7,35 @@
     ../../home/rofi.nix
     ../../home/yazi.nix
     ../../home/symlinks.nix
-    ../../home/packages-base.nix
-    ../../home/packages-marvin.nix
     ../../home/tmux.nix
-    ../../home/blender.nix
+    ../../home/packages-base.nix
+    ../../home/programs/alacritty.nix
+    ../../home/programs/audacity.nix
+    ../../home/programs/blender.nix
+    ../../home/programs/blockbench.nix
+    ../../home/programs/claude-code.nix
+    ../../home/programs/fd.nix
+    ../../home/programs/filezilla.nix
+    ../../home/programs/fzf.nix
+    ../../home/programs/gcc.nix
+    ../../home/programs/godot.nix
+    ../../home/programs/imv.nix
+    ../../home/programs/jetbrains-toolbox.nix
+    ../../home/programs/jdk.nix
+    ../../home/programs/lazygit.nix
+    ../../home/programs/lua-language-server.nix
+    ../../home/programs/mpv.nix
+    ../../home/programs/nil.nix
+    ../../home/programs/nixpkgs-fmt.nix
+    ../../home/programs/nodejs.nix
+    ../../home/programs/obsidian.nix
+    ../../home/programs/pkg-config.nix
+    ../../home/programs/prismlauncher.nix
+    ../../home/programs/rustup.nix
+    ../../home/programs/vesktop.nix
+    ../../home/programs/xclip.nix
+    ../../home/programs/xwallpaper.nix
+    ../../home/programs/yt-dlp.nix
   ];
 
   home.username = "marvin";

hosts/nikita-nixos/home.nix

@@ -7,7 +7,7 @@
     ../../home/yazi.nix
     ../../home/symlinks.nix
     ../../home/packages-base.nix
-    ../../home/blender.nix
+    ../../home/programs/blender.nix
   ];
 
   home.username = "nikita";

system/clam.nix

@@ -0,0 +1,13 @@
+{ pkgs, ... }:
+
+{
+  environment.systemPackages = [
+    pkgs.clamav
+    pkgs.clamtk
+  ];
+
+  services = {
+    clamav.daemon.enable = true;
+    clamav.updater.enable = true;
+  };
+}

system/docker.nix

@@ -0,0 +1,6 @@
+{ ... }:
+
+{
+    virtualisation.docker.enable = true;
+}
+

system/networking.nix

@@ -2,4 +2,8 @@
 
 {
   networking.networkmanager.enable = true;
+
+  # Steam LAN game transfer + Remote Play
+  networking.firewall.allowedTCPPorts = [ 27036 27037 27040 ];
+  networking.firewall.allowedUDPPorts = [ 27031 27036 ];
 }

system/nix.nix

@@ -3,4 +3,11 @@
 {
   nix.settings.experimental-features = [ "nix-command" "flakes" ];
   nixpkgs.config.allowUnfree = true;
+
+  nix.gc = {
+    automatic = true;
+    dates = "weekly";
+    options = "--delete-older-than 7d";
+  };
+  nix.settings.auto-optimise-store = true;
 }

system/programs.nix

@@ -1,7 +1,9 @@
-{ ... }:
+{ pkgs, ... }:
 
 {
   programs.firefox.enable = true;
   programs.zsh.enable = true;
   programs.nix-ld.enable = true;
+
+  environment.systemPackages = [ pkgs.ungoogled-chromium ];
 }

system/users/marvin.nix

@@ -3,7 +3,7 @@
 {
   users.users.marvin = {
     isNormalUser = true;
-    extraGroups = [ "wheel" ];
+    extraGroups = [ "wheel" "docker" ];
     shell = pkgs.zsh;
     packages = with pkgs; [
       tree

system/xserver.nix

@@ -11,16 +11,16 @@
     '';
     xrandrHeads = [
       {
-        output = "HDMI-1";
+        output = "DP-3";
+        primary = true;
         monitorConfig = ''
           Option "Position" "0 0"
         '';
       }
       {
-        output = "DP-1";
+        output = "HDMI-1";
-        primary = true;
         monitorConfig = ''
-          Option "Position" "1920 0"
+          Option "Position" "3440 0"
         '';
       }
     ];