feat(wpcarro/marcus): Add marcus to the depot

me: marcus, meet depot. depot, meet marcus.
Change-Id: Ic6a25ac85e4c7f6dfea2a42b46a4400f92df70a2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4351
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>

users/wpcarro/nixos/marcus/default.nix

@@ -0,0 +1,91 @@
+{ depot, pkgs, lib, ... }:
+{ config, ... }:
+
+let
+  # TODO(wpcarro): Drop dependency on the briefcase concept.
+  wpcarros-emacs = depot.users.wpcarro.emacs.nixos {
+    briefcasePath = "$HOME/depot/users/wpcarro";
+  };
+in {
+  imports = [
+    ./hardware.nix
+  ];
+
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  networking = {
+    # The global useDHCP flag is deprecated, therefore explicitly set to false
+    # here.  Per-interface useDHCP will be mandatory in the future, so this
+    # generated config replicates the default behaviour.
+    useDHCP = false;
+    hostName = "marcus";
+    networkmanager.enable = true;
+    interfaces.enp0s31f6.useDHCP = true;
+    interfaces.wlp0s20f3.useDHCP = true;
+  };
+
+  time.timeZone = "America/New_York";
+
+  services.xserver = {
+    enable = true;
+    libinput = {
+      enable = true;
+      touchpad.naturalScrolling = true;
+      touchpad.tapping = false;
+    };
+    layout = "us";
+    xkbOptions = "caps:escape";
+    displayManager = {
+      # Give EXWM permission to control the session (from tazjin's setup).
+      sessionCommands = "${pkgs.xorg.xhost}/bin/xhost +SI:localhost:$USER";
+      lightdm.enable = true;
+    };
+    windowManager.session = lib.singleton {
+      name = "exwm";
+      start = "${wpcarros-emacs}/bin/wpcarros-emacs";
+    };
+  };
+
+  # Enable sound.
+  sound.enable = true;
+  hardware.pulseaudio.enable = true;
+
+  users.mutableUsers = true;
+  users.users.wpcarro = {
+    isNormalUser = true;
+    extraGroups = [ "wheel" ]; # Enable ‘sudo’ for the user.
+    shell = pkgs.fish;
+  };
+
+  fonts = {
+    fonts = with pkgs; [
+      jetbrains-mono
+    ];
+
+    fontconfig = {
+      defaultFonts = {
+        monospace = [ "JetBrains Mono" ];
+      };
+    };
+  };
+
+  programs.fish.enable = true;
+
+  environment.systemPackages = with pkgs; [
+    alacritty
+    dig
+    direnv
+    fd
+    firefox
+    fzf
+    git
+    ripgrep
+    vim
+    weechat
+    wpcarros-emacs
+    xclip
+  ];
+
+  system.stateVersion = "21.11";
+}