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