![Janne Heß](/assets/img/avatar_default.png)
This is more in line with what dracut does (it appends "Initramfs") and makes it clear where the boot is currently at when it hangs.
150 lines
5.0 KiB
Nix
150 lines
5.0 KiB
Nix
{ config, lib, options, pkgs, ... }:
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let
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cfg = config.system.nixos;
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opt = options.system.nixos;
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inherit (lib)
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concatStringsSep mapAttrsToList toLower
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literalExpression mkRenamedOptionModule mkDefault mkOption trivial types;
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attrsToText = attrs:
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concatStringsSep "\n" (mapAttrsToList (n: v: ''${n}="${toString v}"'') attrs);
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osReleaseContents = {
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NAME = "NixOS";
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ID = "nixos";
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VERSION = "${cfg.release} (${cfg.codeName})";
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VERSION_CODENAME = toLower cfg.codeName;
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VERSION_ID = cfg.release;
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BUILD_ID = cfg.version;
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PRETTY_NAME = "NixOS ${cfg.release} (${cfg.codeName})";
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LOGO = "nix-snowflake";
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HOME_URL = "https://nixos.org/";
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DOCUMENTATION_URL = "https://nixos.org/learn.html";
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SUPPORT_URL = "https://nixos.org/community.html";
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BUG_REPORT_URL = "https://github.com/NixOS/nixpkgs/issues";
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};
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initrdReleaseContents = osReleaseContents // {
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PRETTY_NAME = "${osReleaseContents.PRETTY_NAME} (Initrd)";
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};
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initrdRelease = pkgs.writeText "initrd-release" (attrsToText initrdReleaseContents);
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in
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{
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imports = [
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(mkRenamedOptionModule [ "system" "nixosVersion" ] [ "system" "nixos" "version" ])
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(mkRenamedOptionModule [ "system" "nixosVersionSuffix" ] [ "system" "nixos" "versionSuffix" ])
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(mkRenamedOptionModule [ "system" "nixosRevision" ] [ "system" "nixos" "revision" ])
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(mkRenamedOptionModule [ "system" "nixosLabel" ] [ "system" "nixos" "label" ])
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];
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options.system = {
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nixos.version = mkOption {
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internal = true;
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type = types.str;
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description = "The full NixOS version (e.g. <literal>16.03.1160.f2d4ee1</literal>).";
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};
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nixos.release = mkOption {
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readOnly = true;
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type = types.str;
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default = trivial.release;
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description = "The NixOS release (e.g. <literal>16.03</literal>).";
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};
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nixos.versionSuffix = mkOption {
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internal = true;
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type = types.str;
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default = trivial.versionSuffix;
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description = "The NixOS version suffix (e.g. <literal>1160.f2d4ee1</literal>).";
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};
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nixos.revision = mkOption {
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internal = true;
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type = types.nullOr types.str;
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default = trivial.revisionWithDefault null;
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description = "The Git revision from which this NixOS configuration was built.";
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};
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nixos.codeName = mkOption {
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readOnly = true;
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type = types.str;
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default = trivial.codeName;
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description = "The NixOS release code name (e.g. <literal>Emu</literal>).";
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};
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stateVersion = mkOption {
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type = types.str;
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default = cfg.release;
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defaultText = literalExpression "config.${opt.release}";
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description = ''
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Every once in a while, a new NixOS release may change
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configuration defaults in a way incompatible with stateful
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data. For instance, if the default version of PostgreSQL
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changes, the new version will probably be unable to read your
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existing databases. To prevent such breakage, you should set the
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value of this option to the NixOS release with which you want
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to be compatible. The effect is that NixOS will use
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defaults corresponding to the specified release (such as using
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an older version of PostgreSQL).
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It‘s perfectly fine and recommended to leave this value at the
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release version of the first install of this system.
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Changing this option will not upgrade your system. In fact it
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is meant to stay constant exactly when you upgrade your system.
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You should only bump this option, if you are sure that you can
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or have migrated all state on your system which is affected
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by this option.
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'';
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};
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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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configurationRevision = mkOption {
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type = types.nullOr types.str;
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default = null;
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description = "The Git revision of the top-level flake from which this configuration was built.";
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};
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};
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config = {
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system.nixos = {
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# These defaults are set here rather than up there so that
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# changing them would not rebuild the manual
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version = mkDefault (cfg.release + cfg.versionSuffix);
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};
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# Generate /etc/os-release. See
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# https://www.freedesktop.org/software/systemd/man/os-release.html for the
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# format.
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environment.etc = {
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"lsb-release".text = attrsToText {
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LSB_VERSION = "${cfg.release} (${cfg.codeName})";
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DISTRIB_ID = "nixos";
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DISTRIB_RELEASE = cfg.release;
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DISTRIB_CODENAME = toLower cfg.codeName;
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DISTRIB_DESCRIPTION = "NixOS ${cfg.release} (${cfg.codeName})";
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};
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"os-release".text = attrsToText osReleaseContents;
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};
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boot.initrd.systemd.contents = {
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"/etc/os-release".source = initrdRelease;
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"/etc/initrd-release".source = initrdRelease;
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};
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};
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# uses version info nixpkgs, which requires a full nixpkgs path
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meta.buildDocsInSandbox = false;
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}
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