Users, use directory-driven users in flake.nix

This converts from the old manually defined users in flake.nix to a
dynamically defined users based on the directory structure. This is the
same as ba5fd48 but for users instead of hosts.

hosts/onizuka/users/pan/default.nix

@@ -1,132 +0,0 @@
-{ config, pkgs, ... }:
-
-{
-  home.username = "pan";
-  nixpkgs.config.allowUnfree = true;
-  home.stateVersion = "23.05";
-
-  hypr.enable = true;
-  hypr.monitor = {
-    details = [
-      "DP-2,2560x1440@144,0x0,1"
-      "DP-1,2560x1440@144,-2560x0,1"
-      "HDMI-A-1,disable"
-    ];
-    primary = "DP-2";
-    secondary = "DP-1";
-  };
-  hypr.workspace = {
-    workspaces = {
-      "DP-2" = [
-        "home"
-        "web"
-        "med"
-        "game"
-      ];
-      "DP-1" = [
-        "chat"
-      ];
-    };
-    scratchpad.enable = true;
-    defaults = {
-      "name:web" = [ "librewolf" ];
-      "name:med" = [ "librewolf,title:Picture-in-Picture" ];
-      "name:chat" = [ "Beeper" ];
-      "name:game" = [ "lutris" "explorer.exe" ];
-    };
-  };
-  windows.opaque = [
-    "initialTitle:^(Discord Popout)$"
-    "class:^(firefox)$"
-    "class:^(Gimp)$"
-    "class:^(feh)$"
-    "class:^(mpv)$"
-  ];
-  hypr.background = {
-    enable = true;
-    path = "${config.home.homeDirectory}/med/pix/bg.png";
-  };
-  hypr.cursor = {
-    enable = true;
-    theme = "miku";
-  };
-  hypr = {
-    screenshot.enable = true;
-    mouse.sensitivity = -0.52;
-    polkit.enable = true;
-    master.mfact = 0.53;
-    xwayland.videobridge.enable = true;
-  };
-  ags.enable = true;
-  rofi.enable = true;
-
-  timer.enableHourly = true;
-  timer.enableQuarterly = true;
-  colors.enable = true;
-  manpages.enable = true;
-  trash.enable = true;
-
-  fish.enable = true;
-  kitty.enable = true;
-  kitty.make_default = true;
-  kitty.font = "Cascadia Code";
-  git.enable = true;
-  git.username = "Julia Lange";
-  git.email = "public@julialange.org";
-  ssh.enable = true;
-  librewolf.enable = true;
-  librewolf.make_default = true;
-
-  mpv.enable = true;
-  zathura.enable = true;
-  feh.enable = true;
-
-  neovim.enable = true;
-  neovim.languages = {
-    c.enable = true;
-    nix.enable = true;
-    rust.enable = true;
-  };
-  neovim.plugins = {
-    comments.enable = true;
-    fugitive.enable = true;
-    lualine.enable = true;
-    luasnip.enable = true;
-    nvimcmp.enable = true;
-    telescope = {
-      enable = true;
-      fzf.enable = true;
-    };
-    treesitter.enable = true;
-    wiki.enable = true;
-  };
-
-  lf.enable = true;
-  lf.hiddenfiles = [
-    "${config.home.homeDirectory}/.librewolf"
-    "${config.home.homeDirectory}/.nix-defexpr"
-    "${config.home.homeDirectory}/.nix-profile"
-    "${config.home.homeDirectory}/.nv"
-    "${config.home.homeDirectory}/.pki"
-    "${config.home.homeDirectory}/.steam*"
-    "${config.home.homeDirectory}/.zshenv"
-  ];
-  zoxide.enable = true;
-
-  gimp.enable = true;
-
-  beeper.enable = true;
-  discord.enable = true;
-
-  lutris.enable = true;
-
-  extraPkgs = with pkgs; [
-      # Applications
-      ani-cli # Easy anime player
-      lutgen # LUT generator
-      prismlauncher # Minecraft launcher
-      jdk8 # For playing older minecraft
-      gnucash # Personal Finance Manager
-      zoom-us # Zoom
-  ];
-}