98 lines
2.3 KiB
Nix
98 lines
2.3 KiB
Nix
{
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name,
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pkgs,
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lib,
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config,
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...
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}:
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let
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inherit (lib.modules)
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mkIf
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;
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inherit (lib.options)
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mkOption
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mkEnableOption
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literalExpression
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;
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inherit (lib.types)
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mkOptionType
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;
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t = lib.types;
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/** Either a list of strings, or a dotted string that will be split. */
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convenientAttrPath = t.coercedTo t.str (lib.splitString ".") (t.listOf t.str);
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executablePathInStore = mkOptionType {
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name = "exepath";
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description = "executable path in the Nix store";
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descriptionClass = "noun";
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merge = lib.mergeEqualOption;
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functor = lib.defaultFunctor "exepath";
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check = x: if lib.isDerivation x then (
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x.meta.mainProgram or null != null
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) else (
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lib.pathInStore.check x
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);
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};
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in
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{
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options = {
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enable = mkEnableOption "dynamicism for '${name}'";
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source-options = mkOption {
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type = t.listOf convenientAttrPath;
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description = "A list of attrpaths of the NixOS option the dynamicism for '${name}' uses";
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example = literalExpression ''
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[ [ "services" "gotosocial" "settings" ] "services.nginx.settings" ]
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'';
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};
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systemd-services-updated = mkOption {
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type = t.listOf t.str;
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description = ''
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A list of systemd unit names (including the suffix, e.g. `.service`) that need to be updated.
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'';
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example = literalExpression ''
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[ "gotosocial.service" ]
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'';
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default = lib.attrNames config.unitDropins;
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};
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configFile = mkOption {
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type = t.pathInStore;
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internal = true;
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};
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unitDropins = mkOption {
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type = t.attrsOf t.pathInStore;
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internal = true;
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};
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activate = mkOption {
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type = executablePathInStore;
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internal = true;
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};
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};
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config = mkIf config.enable {
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activate = pkgs.writeShellApplication {
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name = "dynamicism-for-${name}-activate";
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runtimeInputs = [ pkgs.systemd ];
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text = let
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doEdits = config.unitDropins
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|> lib.mapAttrsToList (service: dropin: ''
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cat "${dropin}" | systemctl edit "${service}" --runtime --stdin
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'');
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doReloads = config.unitDropins
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|> lib.mapAttrsToList (service: _: ''
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systemctl reload-or-restart "${service}"
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'');
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in [
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doEdits
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doReloads
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] |> lib.concatLists
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|> lib.concatStringsSep "\n";
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};
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};
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}
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