Clean up config & add comments.

suites/default.nix

@@ -0,0 +1,263 @@
+{
+  pkgs,
+  lib,
+  hostname,
+  user,
+  ...
+}:
+with lib; {
+  # NixOS version.
+  system.stateVersion = "25.05";
+
+  # Enable flakes.
+  nix.settings.experimental-features = [
+    "nix-command"
+    "flakes"
+  ];
+
+  # Add @wheel to trusted-users for remote deployments.
+  nix.settings.trusted-users = ["root" "@wheel"];
+
+  # Enable redistributable firmware.
+  hardware.enableRedistributableFirmware = true;
+
+  # Set time zone.
+  time.timeZone = "Australia/Perth";
+
+  # Select internationalisation properties.
+  i18n.defaultLocale = "en_AU.UTF-8";
+
+  i18n.extraLocaleSettings = {
+    LC_ADDRESS = "en_AU.UTF-8";
+    LC_IDENTIFICATION = "en_AU.UTF-8";
+    LC_MEASUREMENT = "en_AU.UTF-8";
+    LC_MONETARY = "en_AU.UTF-8";
+    LC_NAME = "en_AU.UTF-8";
+    LC_NUMERIC = "en_AU.UTF-8";
+    LC_PAPER = "en_AU.UTF-8";
+    LC_TELEPHONE = "en_AU.UTF-8";
+    LC_TIME = "en_AU.UTF-8";
+  };
+
+  # Configure keymap in X11.
+  services.xserver.xkb = {
+    layout = "us";
+    variant = "";
+  };
+
+  # Enable networking.
+  networking.networkmanager.enable = true;
+
+  # Set hostname
+  networking.hostName = hostname;
+
+  # Define a user account.
+  users.users.fern = {
+    isNormalUser = true;
+    uid = 1000;
+    description = "Fern Garden";
+    extraGroups = [
+      "wheel"
+      "networkmanager"
+    ];
+  };
+
+  # Use fish shell
+  programs.fish = {
+    enable = true;
+    interactiveShellInit = ''
+      # set gruvbox theme
+      theme_gruvbox dark hard
+
+      # yazi cd on quit.
+      function y
+        set tmp (mktemp -t "yazi-cwd.XXXXXX")
+        yazi $argv --cwd-file="$tmp"
+        if read -z cwd < "$tmp"; and [ -n "$cwd" ]; and [ "$cwd" != "$PWD" ]
+          builtin cd -- "$cwd"
+        end
+        rm -f -- "$tmp"
+      end
+    '';
+  };
+
+  # https://nixos.wiki/wiki/Fish#Setting_fish_as_your_shell
+  programs.bash = {
+    interactiveShellInit = ''
+      if [[ $(ps --no-header --pid=$PPID --format=comm) != "fish" && -z ''${BASH_EXECUTION_STRING} ]]
+      then
+        shopt -q login_shell && LOGIN_OPTION='--login' || LOGIN_OPTION=""
+        exec fish $LOGIN_OPTION
+      fi
+    '';
+  };
+
+  # https://discourse.nixos.org/t/slow-build-at-building-man-cache/52365/2
+  documentation.man.generateCaches = false;
+
+  # Enable all terminfo (for ghostty).
+  environment.enableAllTerminfo = true;
+
+  # Install some packages.
+  programs = {
+    git.enable = true;
+    lazygit.enable = true;
+
+    nixvim = {
+      enable = true;
+
+      # Set $EDITOR
+      defaultEditor = true;
+
+      # For telescope grep.
+      dependencies.ripgrep.enable = true;
+
+      # Space as leader.
+      globals.mapleader = " ";
+
+      keymaps = [
+        {
+          key = "<Leader>t";
+          action = "<cmd> ToggleTerm direction=float <CR>";
+        }
+        {
+          key = "<Leader>x";
+          action = "<cmd> Trouble diagnostics toggle focus=false <CR>";
+        }
+        {
+          key = "<Leader>y";
+          action = "<cmd> Yazi <CR>";
+        }
+      ];
+
+      colorschemes.gruvbox = {
+        enable = true;
+        settings = {
+          contrast = "hard";
+          overrides.SignColumn.bg = "none";
+        };
+      };
+
+      opts = rec {
+        shiftwidth = 2;
+        tabstop = shiftwidth;
+        softtabstop = shiftwidth;
+        expandtab = true;
+        number = true;
+        cursorline = true;
+        undofile = true;
+      };
+
+      plugins = {
+        auto-session.enable = true;
+        bufferline.enable = true;
+        colorizer.enable = true;
+        comment.enable = true;
+        gitsigns.enable = true;
+        lsp-format.enable = true;
+        notify.enable = true;
+        nvim-autopairs.enable = true;
+        nvim-surround.enable = true;
+        toggleterm.enable = true;
+        trouble.enable = true;
+        web-devicons.enable = true;
+        yazi.enable = true;
+
+        lualine = {
+          enable = true;
+          settings.extensions = ["trouble" "toggleterm"];
+        };
+
+        telescope = {
+          enable = true;
+          keymaps = {
+            "<Leader>ff" = "find_files";
+            "<Leader>fg" = "live_grep";
+            "<Leader>fb" = "buffers";
+          };
+        };
+
+        blink-cmp = {
+          enable = true;
+          settings = {
+            keymap = {
+              preset = "enter";
+              "<Tab>" = [
+                "select_next"
+                "fallback"
+              ];
+              "<S-Tab>" = [
+                "select_prev"
+                "fallback"
+              ];
+            };
+            completion = {
+              menu.auto_show = true;
+              documentation.auto_show = true;
+              list.selection.preselect = false;
+            };
+            cmdline = {
+              keymap.preset = "inherit";
+              completion = {
+                menu.auto_show = true;
+                list.selection.preselect = false;
+              };
+            };
+          };
+        };
+
+        lsp = {
+          enable = true;
+          inlayHints = true;
+          servers = {
+            nixd = {
+              enable = true;
+              settings.formatting.command = ["${pkgs.alejandra}/bin/alejandra"];
+              settings.options.nixos.expr = "(builtins.getFlake (builtins.toString /home/fern/Repositories/flock)).nixosConfigurations.muskduck.options";
+            };
+          };
+        };
+
+        treesitter = {
+          enable = true;
+          settings = {
+            highlight.enable = true;
+            incremental_selection.enable = true;
+            indent.enable = true;
+          };
+        };
+      };
+    };
+  };
+
+  programs.yazi = {
+    enable = true;
+    flavors."gruvbox-dark.yazi" = pkgs.yazi-flavour-gruvbox-dark;
+    settings.theme = {
+      flavor.dark = "gruvbox-dark";
+    };
+  };
+
+  environment.systemPackages = with pkgs; [
+    aria2
+    btop
+    fishPlugins.gruvbox
+    lynx
+    ncdu
+    rsync
+    tmux
+    trash-cli
+  ];
+
+  # Enable avahi hostname resolution.
+  services.avahi = {
+    enable = true;
+    nssmdns4 = true;
+    publish = {
+      enable = true;
+      addresses = true;
+      domain = true;
+      userServices = true;
+    };
+  };
+}