nixpkgs/modules/misc/version.nix
2013-01-16 15:03:54 +01:00

48 lines
1.1 KiB
Nix

{ config, pkgs, ... }:
with pkgs.lib;
{
options = {
system.nixosVersion = mkOption {
type = types.uniq types.string;
description = "NixOS version.";
};
system.nixosVersionSuffix = mkOption {
type = types.uniq types.string;
description = "NixOS version suffix.";
};
};
config = {
system.nixosVersion =
mkDefault (builtins.readFile ../../.version + config.system.nixosVersionSuffix);
system.nixosVersionSuffix =
mkDefault (if builtins.pathExists ../../.version-suffix then builtins.readFile ../../.version-suffix else "pre-git");
# 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="${config.system.nixosVersion}"
VERSION_ID="${config.system.nixosVersion}"
PRETTY_NAME="NixOS ${config.system.nixosVersion}"
HOME_URL="http://nixos.org/"
'';
target = "os-release";
};
};
}