From d69f6effd4bea0c8b1d84a3b7ba199ab81af747e Mon Sep 17 00:00:00 2001
From: chn <chn@chn.moe>
Date: Tue, 25 Jul 2023 23:33:37 +0800
Subject: [PATCH] =?UTF-8?q?=E6=95=B4=E7=90=86services?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 flake.nix                    |  7 +++-
 modules/boot/chn-PC.nix      | 43 -----------------------
 modules/services/default.nix | 68 ++++++++++++++++++++++++++++++++++++
 3 files changed, 74 insertions(+), 44 deletions(-)
 delete mode 100644 modules/boot/chn-PC.nix
 create mode 100644 modules/services/default.nix

diff --git a/flake.nix b/flake.nix
index fce09bac..91796239 100644
--- a/flake.nix
+++ b/flake.nix
@@ -149,6 +149,7 @@
 								./modules/boot
 								./modules/system
 								./modules/virtualization
+								./modules/services
 								(inputs: { config =
 								{
 									nixos =
@@ -233,6 +234,11 @@
 											kvmGuest.enable = true;
 											nspawn = [ "arch" "ubuntu-22.04" ];
 										};
+										services =
+										{
+											impermanence.enable = true;
+											snapper = { enable = true; configs.persistent = "/nix/persistent"; };
+										};
 									};
 									boot.kernelParams = [ "i915.force_probe=46a6" ];
 								}; })
@@ -240,7 +246,6 @@
 								./modules/basic.nix
 								./modules/fonts.nix
 								./modules/sops.nix
-								./modules/boot/chn-PC.nix
 								[ ./modules/hardware/nvidia-prime.nix { intelBusId = "PCI:0:2:0"; nvidiaBusId = "PCI:1:0:0"; } ]
 								./modules/hardware/chn-PC.nix
 								./modules/networking/samba.nix
diff --git a/modules/boot/chn-PC.nix b/modules/boot/chn-PC.nix
deleted file mode 100644
index 670b4c04..00000000
--- a/modules/boot/chn-PC.nix
+++ /dev/null
@@ -1,43 +0,0 @@
-inputs:
-{
-	config =
-	{
-		# impermanence
-		environment.persistence."/nix/persistent" =
-		{
-			hideMounts = true;
-			directories =
-			[
-				"/etc/NetworkManager/system-connections"
-				"/home"
-				"/root"
-				"/var"
-			];
-			files =
-			[
-				"/etc/machine-id"
-				"/etc/ssh/ssh_host_ed25519_key.pub"
-				"/etc/ssh/ssh_host_ed25519_key"
-				"/etc/ssh/ssh_host_rsa_key.pub"
-				"/etc/ssh/ssh_host_rsa_key"
-			];
-		};
-
-		# services
-		services =
-		{
-			snapper.configs.persistent =
-			{
-				SUBVOLUME = "/nix/persistent";	
-				TIMELINE_CREATE = true;
-				TIMELINE_CLEANUP = true;
-				TIMELINE_MIN_AGE = 1800;
-				TIMELINE_LIMIT_HOURLY = "10";
-				TIMELINE_LIMIT_DAILY = "7";
-				TIMELINE_LIMIT_WEEKLY = "1";
-				TIMELINE_LIMIT_MONTHLY = "0";
-				TIMELINE_LIMIT_YEARLY = "0";
-			};
-		};
-	};
-}
diff --git a/modules/services/default.nix b/modules/services/default.nix
new file mode 100644
index 00000000..c301508a
--- /dev/null
+++ b/modules/services/default.nix
@@ -0,0 +1,68 @@
+inputs:
+{
+	options.nixos.services = let inherit (inputs.lib) mkOption types; in
+	{
+		impermanence =
+		{
+			enable = mkOption { type = types.bool; default = false; };
+			persistence = mkOption { type = types.nonEmptyStr; default = "/nix/persistent"; };
+		};
+    snapper =
+    {
+      enable = mkOption { type = types.bool; default = false; };
+      configs = mkOption { type = types.attrsOf types.nonEmptyStr; default = {}; };
+    };
+	};
+	config = let inherit (inputs.lib) mkMerge mkIf; inherit (inputs.localLib) stripeTabs attrsToList; in mkMerge
+	[
+		(
+			mkIf inputs.config.nixos.services.impermanence.enable
+			{
+				environment.persistence."${inputs.config.nixos.services.impermanence.persistence}" =
+				{
+					hideMounts = true;
+					directories =
+					[
+						"/etc/NetworkManager/system-connections"
+						"/home"
+						"/root"
+						"/var"
+					];
+					files =
+					[
+						"/etc/machine-id"
+						"/etc/ssh/ssh_host_ed25519_key.pub"
+						"/etc/ssh/ssh_host_ed25519_key"
+						"/etc/ssh/ssh_host_rsa_key.pub"
+						"/etc/ssh/ssh_host_rsa_key"
+					];
+				};
+			}
+		)
+    (
+      mkIf inputs.config.nixos.services.snapper.enable
+      {
+        services.snapper.configs =
+          let
+            f = (config:
+            {
+              inherit (config) name;
+              value =
+              {
+                SUBVOLUME = config.value;
+                TIMELINE_CREATE = true;
+                TIMELINE_CLEANUP = true;
+                TIMELINE_MIN_AGE = 1800;
+                TIMELINE_LIMIT_HOURLY = "10";
+                TIMELINE_LIMIT_DAILY = "7";
+                TIMELINE_LIMIT_WEEKLY = "1";
+                TIMELINE_LIMIT_MONTHLY = "0";
+                TIMELINE_LIMIT_YEARLY = "0";
+              };
+            });
+          in
+            builtins.listToAttrs (builtins.map f (attrsToList inputs.config.nixos.services.snapper.configs));
+      }
+    )
+  ];
+}