Eelco Dolstra
b6bac6c144
This reverts commit10addad603, reversing changes made to7786575c6c. NixOS scripts should be kept in the NixOS source tree, not in pkgs. Moving them around is just confusing and creates unnecessary code/history churn.
106 lines
3.2 KiB
Nix
106 lines
3.2 KiB
Nix
{ options, config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.system.nixos;
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gitRepo = "${toString pkgs.path}/.git";
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gitCommitId = lib.substring 0 7 (commitIdFromGitRepo gitRepo);
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in
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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.str;
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default = lib.trivial.revisionWithDefault "master";
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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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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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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 can 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 option
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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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'';
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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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};
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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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revision = mkIf (pathIsDirectory gitRepo) (mkDefault gitCommitId);
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versionSuffix = mkIf (pathIsDirectory gitRepo) (mkDefault (".git." + gitCommitId));
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# Note: the first letter is bumped on every release. It's an animal.
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codeName = "Koi";
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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."os-release".text =
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''
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NAME=NixOS
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ID=nixos
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VERSION="${cfg.version} (${cfg.codeName})"
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VERSION_CODENAME=${toLower cfg.codeName}
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VERSION_ID="${cfg.version}"
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PRETTY_NAME="NixOS ${cfg.version} (${cfg.codeName})"
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HOME_URL="https://nixos.org/"
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SUPPORT_URL="https://nixos.org/nixos/support.html"
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BUG_REPORT_URL="https://github.com/NixOS/nixpkgs/issues"
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'';
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};
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}
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