feat(modules): system package catalog and development tooling

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

modules/packages.nix

@@ -0,0 +1,202 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
+
+let
+  inherit (lib)
+    mkEnableOption
+    mkOption
+    mkIf
+    types
+    optionals
+    ;
+  cfg = config.omni;
+  omni = config.omni.lib;
+in
+{
+  options.omni.packages = {
+    enable = mkEnableOption "Omnixient packages";
+
+    exclude = mkOption {
+      type = types.listOf types.str;
+      default = [ ];
+      example = [
+        "discord"
+        "spotify"
+        "steam"
+      ];
+      description = "List of package names to exclude from installation";
+    };
+
+    categories = {
+      base = mkEnableOption "Base system packages" // {
+        default = true;
+      };
+    };
+  };
+
+  config = mkIf (cfg.enable or true) {
+    # Wire package categories to feature flags via mkDefault (overridable)
+    omni.packages.categories = {
+    };
+
+    environment.systemPackages =
+      with pkgs;
+      omni.filterPackages (
+        # Base system packages (always installed)
+        [
+          # Core utilities
+          coreutils
+          util-linux
+          binutils
+          pciutils
+          usbutils
+          lshw
+
+          # File management
+          file
+          tree
+          ncdu
+          duf
+          dust
+
+          # Networking
+          iproute2
+          iputils
+          dnsutils
+          nettools
+          nmap
+          wget
+          curl
+          aria2
+
+          # Archives
+          zip
+          unzip
+          p7zip
+          rar
+          unrar
+          xz
+
+          # System monitoring
+          btop
+          htop
+          iotop
+          iftop
+          nethogs
+          lsof
+          sysstat
+
+          # Text processing
+          vim
+          gnused
+          gawk
+          jq
+          yq-go
+          ripgrep
+          fd
+          bat
+          eza
+          fzf
+          zoxide
+
+          # Version control
+          git
+          git-lfs
+          lazygit
+          gh
+
+          # Terminal multiplexers
+          tmux
+          screen
+
+          # System tools
+          rsync
+          rclone
+          age
+          sops
+          gnupg
+          pass
+          pwgen
+
+          # Shell and prompts
+          bash
+          zsh
+          fish
+          starship
+          oh-my-posh
+
+          # Package management helpers
+          nix-index
+          nix-tree
+          nix-diff
+          nixfmt
+          nil
+          statix
+          deadnix
+          cachix
+          lorri
+          direnv
+        ]
+      ); # End of filterPackages
+
+    # Font packages
+    fonts.packages = with pkgs; [
+      # Nerd fonts (for icons in terminal)
+      nerd-fonts.jetbrains-mono
+      nerd-fonts.fira-code
+      nerd-fonts.hack
+      nerd-fonts.iosevka
+      nerd-fonts.meslo-lg
+      nerd-fonts.sauce-code-pro
+      nerd-fonts.ubuntu-mono
+      nerd-fonts.droid-sans-mono
+      nerd-fonts.roboto-mono
+      nerd-fonts.inconsolata
+
+      # System fonts
+      noto-fonts
+      noto-fonts-cjk-sans
+      noto-fonts-color-emoji
+      liberation_ttf
+      ubuntu-classic
+      roboto
+      open-sans
+      lato
+
+      # Programming fonts
+      jetbrains-mono
+      fira-code
+      hasklig
+      victor-mono
+
+      # Icon fonts
+      font-awesome
+      material-icons
+      material-design-icons
+    ];
+
+    # Enable font configuration
+    fonts.fontconfig = {
+      enable = true;
+      defaultFonts = {
+        serif = [
+          "Noto Serif"
+          "Liberation Serif"
+        ];
+        sansSerif = [
+          "Noto Sans"
+          "Liberation Sans"
+        ];
+        monospace = [
+          "JetBrainsMono Nerd Font"
+          "Noto Sans Mono"
+        ];
+        emoji = [ "Noto Color Emoji" ];
+      };
+    };
+  };
+}