/sys/machines -> /hosts

hosts/hopper/hardware.nix

@@ -0,0 +1,92 @@
+{lib, ...}: {
+  nixpkgs.hostPlatform.system = "x86_64-linux";
+
+  ## nvidia gpu
+  services.xserver.videoDrivers = ["nvidia"];
+  hardware.nvidia = {
+    open = false;
+  };
+
+  #hardware.nvidia = {
+  #  modesetting.enable = true;
+  #  package = config.boot.kernelPackages.nvidiaPackages.stable;
+  #};
+
+  boot = {
+    blacklistedKernelModules = [
+      "xhci_pci" # was causing issues (100% udevd cpu usage)
+    ];
+    initrd = {
+      availableKernelModules = [
+        "ehci_pci"
+        "ahci"
+        "usb_storage"
+        "usbhid"
+        "sd_mod"
+      ];
+      kernelModules = [];
+    };
+    kernelModules = ["kvm-intel" "wireguard"];
+    extraModulePackages = [];
+    loader = {
+      systemd-boot = {
+        enable = true;
+        configurationLimit = 10;
+      };
+      efi.canTouchEfiVariables = true;
+    };
+  };
+
+  boot.initrd.postResumeCommands = lib.mkAfter ''
+    mkdir /btrfs_tmp
+    mount /dev/disk/by-uuid/1297e638-f2ff-49a2-a362-314ac7eeaabc /btrfs_tmp
+      if [[ -e /btrfs_tmp/root ]]; then
+        mkdir -p /btrfs_tmp/old_roots
+        timestamp=$(date --date="@$(stat -c %Y /btrfs_tmp/root)" "+%Y-%m-%-d_%H:%M:%S")
+        mv /btrfs_tmp/root "/btrfs_tmp/old_roots/$timestamp"
+    fi
+
+    delete_subvolume_recursively() {
+        IFS=$'\n'
+        for i in $(btrfs subvolume list -o "$1" | cut -f 9- -d ' '); do
+            delete_subvolume_recursively "/btrfs_tmp/$i"
+        done
+        btrfs subvolume delete "$1"
+    }
+
+    for i in $(find /btrfs_tmp/old_roots/ -maxdepth 1 -mtime +30); do
+        delete_subvolume_recursively "$i"
+    done
+
+    btrfs subvolume create /btrfs_tmp/root
+    umount /btrfs_tmp
+  '';
+
+  fileSystems = {
+    "/" = {
+      device = "/dev/disk/by-uuid/1297e638-f2ff-49a2-a362-314ac7eeaabc";
+      fsType = "btrfs";
+      options = ["subvol=root" "compress=zstd" "autodefrag" "noatime"];
+    };
+    "/home" = {
+      device = "/dev/disk/by-uuid/1297e638-f2ff-49a2-a362-314ac7eeaabc";
+      fsType = "btrfs";
+      options = ["subvol=home" "compress=zstd"];
+    };
+    "/nix" = {
+      device = "/dev/disk/by-uuid/1297e638-f2ff-49a2-a362-314ac7eeaabc";
+      fsType = "btrfs";
+      options = ["subvol=nix" "compress=zstd" "noatime"];
+    };
+    "/persist" = {
+      device = "/dev/disk/by-uuid/1297e638-f2ff-49a2-a362-314ac7eeaabc";
+      neededForBoot = true;
+      fsType = "btrfs";
+      options = ["subvol=persist" "compress=zstd"];
+    };
+    "/boot" = {
+      device = "/dev/disk/by-uuid/8D4C-2F05";
+      fsType = "vfat";
+    };
+  };
+}