76 lines
2 KiB
Nix
76 lines
2 KiB
Nix
{ config, pkgs, ... }:
|
|
|
|
with pkgs.lib;
|
|
|
|
{
|
|
|
|
options = {
|
|
|
|
system.nixosVersion = mkOption {
|
|
internal = true;
|
|
type = types.uniq types.string;
|
|
description = "NixOS version.";
|
|
};
|
|
|
|
system.nixosVersionSuffix = mkOption {
|
|
internal = true;
|
|
type = types.uniq types.string;
|
|
description = "NixOS version suffix.";
|
|
};
|
|
|
|
system.nixosRevision = mkOption {
|
|
internal = true;
|
|
type = types.uniq types.string;
|
|
description = "NixOS Git revision hash.";
|
|
};
|
|
|
|
system.nixosCodeName = mkOption {
|
|
internal = true;
|
|
type = types.uniq types.string;
|
|
description = "NixOS release code name.";
|
|
};
|
|
|
|
system.defaultChannel = mkOption {
|
|
internal = true;
|
|
type = types.uniq types.string;
|
|
default = https://nixos.org/channels/nixos-unstable;
|
|
description = "Default NixOS channel to which the root user is subscribed.";
|
|
};
|
|
|
|
};
|
|
|
|
config = {
|
|
|
|
system.nixosVersion =
|
|
mkDefault (readFile "${toString pkgs.path}/.version" + config.system.nixosVersionSuffix);
|
|
|
|
system.nixosVersionSuffix =
|
|
let suffixFile = "${toString pkgs.path}/.version-suffix"; in
|
|
mkDefault (if pathExists suffixFile then readFile suffixFile else "pre-git");
|
|
|
|
system.nixosRevision =
|
|
let fn = "${toString pkgs.path}/.git-revision"; in
|
|
mkDefault (if pathExists fn then readFile fn else "master");
|
|
|
|
# Note: code names must only increase in alphabetical order.
|
|
system.nixosCodeName = "Aardvark";
|
|
|
|
# Generate /etc/os-release. See
|
|
# http://0pointer.de/public/systemd-man/os-release.html for the
|
|
# format.
|
|
environment.etc = singleton
|
|
{ source = pkgs.writeText "os-release"
|
|
''
|
|
NAME=NixOS
|
|
ID=nixos
|
|
VERSION="${config.system.nixosVersion} (${config.system.nixosCodeName})"
|
|
VERSION_ID="${config.system.nixosVersion}"
|
|
PRETTY_NAME="NixOS ${config.system.nixosVersion} (${config.system.nixosCodeName})"
|
|
HOME_URL="http://nixos.org/"
|
|
'';
|
|
target = "os-release";
|
|
};
|
|
|
|
};
|
|
|
|
}
|