nh: fix clean option behaviour for Darwin

modules/programs/nh.nix

@@ -37,7 +37,9 @@ in
         description = ''
           How often cleanup is performed.
 
-          The format is described in {manpage}`systemd.time(7)`.
+          On linux the format is described in {manpage}`systemd.time(7)`.
+
+          ${lib.hm.darwin.intervalDocumentation}
         '';
       };
 
@@ -59,6 +61,10 @@ in
       lib.optional (cfg.clean.enable && config.nix.gc.automatic)
         "programs.nh.clean.enable and nix.gc.automatic (Home-Manager) are both enabled. Please use one or the other to avoid conflict.";
 
+    assertions = lib.optionals pkgs.stdenv.isDarwin [
+      (lib.hm.darwin.assertInterval "programs.nh.clean.dates" cfg.clean.dates pkgs)
+    ];
+
     home = lib.mkIf cfg.enable {
       packages = [ cfg.package ];
       sessionVariables = lib.mkIf (cfg.flake != null) (
@@ -70,7 +76,7 @@ in
       );
     };
 
-    systemd.user = lib.mkIf cfg.clean.enable {
+    systemd.user = lib.mkIf (cfg.clean.enable && pkgs.stdenv.isLinux) {
       services.nh-clean = {
         Unit.Description = "Nh clean (user)";
 
@@ -90,6 +96,21 @@ in
 
         Install.WantedBy = [ "timers.target" ];
       };
+
+    };
+
+    launchd.agents.nh-clean = lib.mkIf (cfg.clean.enable && pkgs.stdenv.isDarwin) {
+      enable = true;
+      config = {
+        ProgramArguments = [
+          "${lib.getExe cfg.package}"
+          "clean"
+          "user"
+        ] ++ lib.optional (cfg.clean.extraArgs != "") cfg.clean.extraArgs;
+
+        StartCalendarInterval = lib.hm.darwin.mkCalendarInterval cfg.clean.dates;
+
+      };
     };
   };
 }

tests/darwinScrublist.nix

@@ -101,6 +101,7 @@ let
     "neovide"
     "neovim"
     "newsboat"
+    "nh"
     "nheko"
     "nix"
     "nix-direnv"

tests/modules/programs/nh/darwin/config.nix

@@ -0,0 +1,22 @@
+{
+  programs.nh = {
+    enable = true;
+
+    flake = "/path/to/flake";
+
+    clean = {
+      enable = true;
+      dates = "weekly";
+    };
+  };
+
+  nmt.script = ''
+    serviceFile="LaunchAgents/org.nix-community.home.nh-clean.plist"
+    serviceFileNormalized="$(normalizeStorePaths "$serviceFile")"
+
+    assertFileExists $serviceFile
+    assertFileContent $serviceFileNormalized ${./launchd.plist}
+
+    assertFileRegex home-path/etc/profile.d/hm-session-vars.sh 'NH_FLAKE="/path/to/flake"'
+  '';
+}

tests/modules/programs/nh/darwin/launchd.plist

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>Label</key>
+	<string>org.nix-community.home.nh-clean</string>
+	<key>ProgramArguments</key>
+	<array>
+		<string>@nh@/bin/nh</string>
+		<string>clean</string>
+		<string>user</string>
+	</array>
+	<key>StartCalendarInterval</key>
+	<array>
+		<dict>
+			<key>Hour</key>
+			<integer>0</integer>
+			<key>Minute</key>
+			<integer>0</integer>
+			<key>Weekday</key>
+			<integer>1</integer>
+		</dict>
+	</array>
+</dict>
+</plist>

tests/modules/programs/nh/default.nix

@@ -1,4 +1,7 @@
 { lib, pkgs, ... }:
-lib.optionalAttrs pkgs.stdenv.hostPlatform.isLinux {
-  nh = ./nh.nix;
-}
+(lib.optionalAttrs pkgs.stdenv.hostPlatform.isDarwin {
+  nh = ./darwin/config.nix;
+})
+// (lib.optionalAttrs pkgs.stdenv.hostPlatform.isLinux {
+  nh = ./linux/config.nix;
+})