{
  config,
  pkgs,
  lib,
  ...
}:

let
  cfg = config.irl;
in
{
  options.irl.gui-packages = lib.mkEnableOption "GUI packages managed by home-manager";

  config = {
    home.username = "irl";
    home.homeDirectory =
      if lib.strings.hasSuffix "darwin" pkgs.system then "/Users/irl" else "/home/irl";
    home.stateVersion = "25.05";
    home.packages = with pkgs; [
      fish
      neofetch
      rust-analyzer
      starship
      tree
    ];
    home.shellAliases = {
      hms =
        "home-manager switch --flake ~/.config/nix-configs#irl"
        + (if cfg.gui-packages then "-gui" else "")
        + "-${pkgs.system}";
    };
    programs.bash = {
      enable = true;
      initExtra = ''
        if [[ $(${pkgs.procps}/bin/ps --no-header --pid=$PPID --format=comm) != "fish" && -z ''${BASH_EXECUTION_STRING} ]]
        then
          shopt -q login_shell && LOGIN_OPTION='--login' || LOGIN_OPTION=""
          exec ${pkgs.fish}/bin/fish $LOGIN_OPTION
        fi
      '';
    };
    programs.firefox = lib.mkIf cfg.gui-packages {
      enable = true;
      profiles.irl = {
        extensions = {
          force = true;
          packages = with pkgs.nur.repos.rycee.firefox-addons; [
            bitwarden
            kagi-search
            privacy-badger
          ];
        };
        settings = {
          "extensions.autoDisableScope" = 0;
        };
      };
    };
    programs.fish.enable = true;
    programs.fzf = {
      enable = true;
      enableFishIntegration = true;
    };
    programs.git = {
      delta.enable = true;
      enable = true;
      extraConfig = {
        diff = {
          algorithm = "histogram";
        };
        init = {
          defaultBranch = "main";
        };
        rebase = {
          autosquash = true;
          autostash = true;
        };
        url = {
          "git@github.com:".pushInsteadOf = "https://github.com/";
          "git@gitlab.com:".pushInsteadOf = "https://gitlab.com/";
          "git@guardianproject.dev:".pushInsteadOf = "https://guardianproject.dev/";
        };
        user = {
          name = "irl";
          email = "iain@learmonth.me";
        };
      };
    };
    programs.home-manager.enable = true;
    programs.neovim = {
      defaultEditor = true;
      enable = true;
      viAlias = true;
      vimAlias = true;
      vimdiffAlias = true;
      plugins = with pkgs.vimPlugins; [
        bufferline-nvim
        nvim-lspconfig
        nvim-treesitter.withAllGrammars
      ];
      extraLuaConfig = ''
        vim.lsp.config('rust_analyzer', {
          settings = {
            ['rust-analyzer'] = {},
          },
        })
        vim.api.nvim_create_autocmd('LspAttach', {
          group = vim.api.nvim_create_augroup('my.lsp', {}),
          callback = function(args)
            local client = assert(vim.lsp.get_client_by_id(args.data.client_id))
            if client:supports_method('textDocument/implementation') then
              -- Create a keymap for vim.lsp.buf.implementation ...
            end

            -- Enable auto-completion. Note: Use CTRL-Y to select an item. |complete_CTRL-Y|
            if client:supports_method('textDocument/completion') then
              -- Optional: trigger autocompletion on EVERY keypress. May be slow!
              -- local chars = {}; for i = 32, 126 do table.insert(chars, string.char(i)) end
              -- client.server_capabilities.completionProvider.triggerCharacters = chars

              vim.lsp.completion.enable(true, client.id, args.buf, {autotrigger = true})
            end

            -- Auto-format ("lint") on save.
            -- Usually not needed if server supports "textDocument/willSaveWaitUntil".
            if not client:supports_method('textDocument/willSaveWaitUntil')
                and client:supports_method('textDocument/formatting') then
              vim.api.nvim_create_autocmd('BufWritePre', {
                group = vim.api.nvim_create_augroup('my.lsp', {clear=false}),
                buffer = args.buf,
                callback = function()
                  vim.lsp.buf.format({ bufnr = args.buf, id = client.id, timeout_ms = 1000 })
                end,
              })
            end
          end,
        })
      '';
    };
    programs.starship = {
      enable = true;
      enableFishIntegration = true;
      enableInteractive = true;
      enableTransience = true;
    };
    programs.zellij.enable = true;
  };
}