mirror of
https://github.com/LnL7/nix-darwin.git
synced 2024-12-14 11:57:34 +00:00
58aa5bf185
Since named entries can be overridden now based on ordering now merging
is only a problem for removing one of the default search paths, in which
case a higher priority eg. mkForce can be used.
{
nix.nixPath = [{ darwin-config = "/darwin.nix"; }];
}
Will result in
[ "darwin-config=/darwin.nix" "/nix/var/nix/profiles/per-user/root/channels" "$HOME/.nix-defexpr/channels" ]
Fixes #137
88 lines
3 KiB
Nix
88 lines
3 KiB
Nix
{ options, config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.system;
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defaultStateVersion = options.system.stateVersion.default;
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gitCommitId = lib.substring 0 7 (commitIdFromGitRepo gitRepo);
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gitRepo = "${toString pkgs.path}/.git/";
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releaseFile = "${toString pkgs.path}/.version";
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revisionFile = "${toString pkgs.path}/.git-revision";
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suffixFile = "${toString pkgs.path}/.version-suffix";
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revision = if builtins.pathExists gitRepo then gitCommitId
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else if builtins.pathExists revisionFile then fileContents revisionFile
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else null;
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versionSuffix = if builtins.pathExists gitRepo then ".git." + gitCommitId
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else if builtins.pathExists suffixFile then fileContents suffixFile
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else null;
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in
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{
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options = {
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system.stateVersion = mkOption {
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type = types.int;
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default = 4;
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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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system.darwinLabel = mkOption {
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type = types.str;
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default = cfg.nixpkgsVersion;
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description = "Label to be used in the names of generated outputs.";
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};
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system.nixpkgsRelease = mkOption {
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readOnly = true;
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type = types.str;
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default = fileContents releaseFile;
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description = "The nixpkgs release (e.g. <literal>16.03</literal>).";
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};
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system.nixpkgsVersion = mkOption {
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internal = true;
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type = types.str;
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description = "The full nixpkgs version (e.g. <literal>16.03.1160.f2d4ee1</literal>).";
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};
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system.nixpkgsVersionSuffix = mkOption {
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internal = true;
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type = types.str;
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default = "pre-git";
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description = "The nixpkgs version suffix (e.g. <literal>1160.f2d4ee1</literal>).";
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};
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system.nixpkgsRevision = mkOption {
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internal = true;
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type = types.str;
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default = "master";
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description = "The nixpkgs git revision from which this configuration was built.";
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};
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};
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config = {
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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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system.nixpkgsVersion = mkDefault (cfg.nixpkgsRelease + cfg.nixpkgsVersionSuffix);
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system.nixpkgsRevision = mkIf (revision != null) (mkDefault revision);
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system.nixpkgsVersionSuffix = mkIf (versionSuffix != null) (mkDefault versionSuffix);
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assertions = [ { assertion = cfg.stateVersion <= defaultStateVersion; message = "system.stateVersion = ${toString cfg.stateVersion}; is not a valid value"; } ];
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};
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}
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