nixos/modules/install.nix

   1 { pkgs, lib, config, ... }:
   2 let
   3   inherit (builtins) listToAttrs;
   4   inherit (lib) types;
   5   inherit (config) networking;
   6   cfg = config.install;
   7   nixRunDefaultCommand = "bash";
   8 in
   9 {
  10 options.install = {
  11   enable = lib.mkEnableOption "Install";
  12   shellScript = lib.mkOption {
  13     type = types.lines;
  14     default = "";
  15     apply = lines: pkgs.writeShellScriptBin nixRunDefaultCommand "set -eu\n${lines}";
  16   };
  17   target = lib.mkOption {
  18     type = types.str;
  19     default = "root@${networking.hostName}.${networking.domain}";
  20   };
  21   profile = lib.mkOption {
  22     type = types.str;
  23     default = "/nix/var/nix/profiles/system";
  24   };
  25 };
  26 config = lib.mkIf cfg.enable {
  27   install.shellScript =
  28     let nixos = config.system.build.toplevel; in ''
  29     (
  30     PATH="$PATH:${with pkgs; lib.makeBinPath [nix openssh]}"
  31     set -x
  32     nix ''${TRACE:+-L} copy \
  33      --to ssh://${cfg.target} --substitute-on-destination \
  34      ${nixos}
  35     ssh ${cfg.target} nix-env --profile "${cfg.profile}" --set "${nixos}" \
  36      '&&' "${cfg.profile}"/bin/switch-to-configuration "''${switch:-switch}"
  37     )
  38   '';
  39 };
  40 }