From 63adb41f1a060c21a68143eb9e86c2790ef66f36 Mon Sep 17 00:00:00 2001
From: Gregor Kleen <gkleen@yggdrasil.li>
Date: Thu, 8 Aug 2024 10:45:09 +0200
Subject: ...

---
 hosts/sif/default.nix | 31 +++++++++++++++++++++++++++-
 hosts/sif/hw.nix      | 57 ++++-----------------------------------------------
 2 files changed, 34 insertions(+), 54 deletions(-)

(limited to 'hosts/sif')

diff --git a/hosts/sif/default.nix b/hosts/sif/default.nix
index 3525015d..5ed4e05e 100644
--- a/hosts/sif/default.nix
+++ b/hosts/sif/default.nix
@@ -16,6 +16,7 @@ in {
     tmpfs-root bcachefs initrd-all-crypto-modules default-locale openssh rebuild-machines
     networkmanager
     flakeInputs.nixos-hardware.nixosModules.lenovo-thinkpad-p1
+    flakeInputs.impermanence.nixosModules.impermanence
   ];
 
   config = {
@@ -555,7 +556,10 @@ in {
     # sound.enable = true;
 
     nix = {
-      settings.auto-optimise-store = true;
+      settings = {
+        auto-optimise-store = true;
+        max-jobs = 4;
+      };
       daemonCPUSchedPolicy = "idle";
       daemonIOSchedClass = "idle";
 
@@ -569,6 +573,11 @@ in {
         speedFactor = 4;
       };
     };
+    systemd.services."nix-daemon" = {
+      serviceConfig = {
+        CPUQuota = "400%";
+      };
+    };
 
     environment.etc."X11/xorg.conf.d/50-wacom.conf".source = lib.mkForce ./wacom.conf;
 
@@ -661,6 +670,26 @@ in {
       in [ gtk-portal ];
     };
 
+    environment.persistence."/.bcachefs" = {
+      hideMounts = true;
+      directories = [
+        "/nix"
+        "/root"
+        "/var/log"
+        "/var/lib/sops-nix"
+        "/var/lib/nixos"
+        "/var/lib/systemd"
+        "/home"
+        "/var/lib/chrony"
+        "/var/lib/fprint"
+        "/var/lib/bluetooth"
+        "/etc/NetworkManager/system-connections"
+      ];
+      files = [
+        "/etc/localtime"
+      ];
+    };
+
     system.stateVersion = "24.11";
   };
 }
diff --git a/hosts/sif/hw.nix b/hosts/sif/hw.nix
index 077d25a6..fc20ef7c 100644
--- a/hosts/sif/hw.nix
+++ b/hosts/sif/hw.nix
@@ -12,59 +12,11 @@
         fsType = "bcachefs";
         neededForBoot = true;
       };
-    "/nix" =
-      { device = "/.bcachefs/nix";
-        fsType = "none";
-        options = [ "bind" ]; # "x-systemd.after=bcachefs.service" "x-systemd.requires=bcachefs.service" "x-systemd.after=\\x2ebcachefs.mount" "x-systemd.requires=\\x2ebcachefs.mount" ];
-      };
-    "/root" =
-      { device = "/.bcachefs/root";
-        fsType = "none";
-        options = [ "bind" ]; # "x-systemd.after=\\x2ebcachefs.mount" "x-systemd.requires=\\x2ebcachefs.mount" ];
-      };
-    "/var/log" =
-      { device = "/.bcachefs/var/log";
-        fsType = "none";
-        options = [ "bind" ]; # "x-systemd.after=bcachefs.service" "x-systemd.requires=bcachefs.service" "x-systemd.after=\\x2ebcachefs.mount" "x-systemd.requires=\\x2ebcachefs.mount" ];
-      };
-    "/var/lib/sops-nix" =
-      { device = "/.bcachefs/var/lib/sops-nix";
-        fsType = "none";
-        options = [ "bind" ]; # "x-systemd.after=bcachefs.service" "x-systemd.requires=bcachefs.service" "x-systemd.after=\\x2ebcachefs.mount" "x-systemd.requires=\\x2ebcachefs.mount" ];
-        neededForBoot = true;
-      };
-    "/var/lib/nixos" =
-      { device = "/.bcachefs/var/lib/nixos";
-        fsType = "none";
-        options = [ "bind" ]; # "x-systemd.after=bcachefs.service" "x-systemd.requires=bcachefs.service" "x-systemd.after=\\x2ebcachefs.mount" "x-systemd.requires=\\x2ebcachefs.mount" ];
-      };
-    "/var/lib/chrony" =
-      { device = "/.bcachefs/var/lib/chrony";
-        fsType = "none";
-        options = [ "bind" ]; # "x-systemd.after=\\x2ebcachefs.mount" "x-systemd.requires=\\x2ebcachefs.mount" ];
-      };
-    "/var/lib/fprint" =
-      { device = "/.bcachefs/var/lib/fprint";
-        fsType = "none";
-        options = [ "bind" ]; # "x-systemd.after=\\x2ebcachefs.mount" "x-systemd.requires=\\x2ebcachefs.mount" ];
-      };
-    "/var/lib/systemd" =
-      { device = "/.bcachefs/var/lib/systemd";
-        fsType = "none";
-        options = [ "bind" ]; # "x-systemd.after=bcachefs.service" "x-systemd.requires=bcachefs.service" "x-systemd.after=\\x2ebcachefs.mount" "x-systemd.requires=\\x2ebcachefs.mount" ];
-        neededForBoot = true;
-      };
-    "/home" =
-      { device = "/.bcachefs/home";
-        fsType = "none";
-        options = [ "bind" ]; # "x-systemd.after=\\x2ebcachefs.mount" "x-systemd.requires=\\x2ebcachefs.mount" ];
-      };
-    "/etc/NetworkManager/system-connections" =
-      { device = "/.bcachefs/etc/NetworkManager/system-connections";
-        fsType = "none";
-        options = [ "bind" ]; # "x-systemd.after=\\x2ebcachefs.mount" "x-systemd.requires=\\x2ebcachefs.mount" ];
-      };
+    "/var/lib/sops-nix".neededForBoot = true;
+    "/var/lib/systemd".neededForBoot = true;
   };
+  system.etc.overlay.enable = false;
+  systemd.sysusers.enable = false;
 
   # boot.initrd.supportedFilesystems.bcachefs = true;
   # boot.initrd.systemd.units."dev-sif-nvm0:-dev-sif-nvm1.device".enable = false;
@@ -91,7 +43,6 @@
   #   };
   # };
 
-  nix.settings.max-jobs = 12;
   # High-DPI console
   console.font = "${pkgs.terminus_font}/share/consolefonts/ter-u28n.psf.gz";
 
-- 
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