snowfall lib migration wip

modules/nixos/presets/default/default.nix

@@ -14,6 +14,20 @@ in {
   };
 
   config = mkIf cfg.enable {
+    zramSwap = {
+      enable = true; # Hopefully? helps with freezing when using swap
+    };
+    boot = {
+      kernelPackages = lib.mkDefault pkgs.linuxPackages_latest;
+      loader = {
+        systemd-boot.enable = !config.${namespace}.hardware.secureBoot.enable;
+        efi.canTouchEfiVariables = !config.${namespace}.hardware.asahi.enable;
+      };
+      # Hide the OS choice for bootloaders.
+      # It's still possible to open the bootloader list by pressing any key
+      # It will just not appear on screen unless a key is pressed
+      loader.timeout = 0;
+    };
     # Set your time zone.
     time.timeZone = "Europe/Berlin";
 

modules/nixos/presets/disko/impermanenceBtrfs/default.nix

@@ -0,0 +1,121 @@
+{
+  lib,
+  pkgs,
+  inputs,
+  namespace,
+  system,
+  target,
+  format,
+  virtual,
+  systems,
+  config,
+  ...
+}:
+with lib;
+with lib.${namespace}; let
+  cfg = config.${namespace}.presets.disko.impermanenceBtrfs;
+in {
+  options.${namespace}.presets.disko.impermanenceBtrfs = with types; {
+    enable = mkBoolOpt false "Enable preset";
+    device = mkOpt' str "/dev/nvme0n1";
+    swapSize = mkOpt' int 32;
+  };
+
+  config = mkIf cfg.enable {
+    disko.devices = {
+      disk.main = {
+        inherit (cfg) device;
+        type = "disk";
+        content = {
+          type = "gpt";
+          partitions = {
+            boot = {
+              name = "boot";
+              size = "1M";
+              type = "EF02";
+            };
+            esp = {
+              name = "ESP";
+              size = "500M";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+              };
+            };
+            swap = {
+              size = "${builtins.toString cfg.swapSize}G";
+              content = {
+                type = "swap";
+                resumeDevice = true;
+              };
+            };
+            root = {
+              name = "root";
+              size = "100%";
+              content = {
+                type = "lvm_pv";
+                vg = "root_vg";
+              };
+            };
+          };
+        };
+      };
+      lvm_vg = {
+        root_vg = {
+          type = "lvm_vg";
+          lvs = {
+            root = {
+              size = "100%FREE";
+              content = {
+                type = "btrfs";
+                extraArgs = ["-f"];
+
+                subvolumes = {
+                  "/root" = {
+                    mountpoint = "/";
+                  };
+
+                  "/persist" = {
+                    mountOptions = ["subvol=persist" "noatime"];
+                    mountpoint = "/persist";
+                  };
+
+                  "/nix" = {
+                    mountOptions = ["subvol=nix" "noatime"];
+                    mountpoint = "/nix";
+                  };
+                };
+              };
+            };
+          };
+        };
+      };
+    };
+    boot.initrd.postDeviceCommands = ''
+      mkdir -p /btrfs_tmp
+      mount /dev/root_vg/root /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
+    '';
+  };
+}

modules/nixos/presets/workstation/default.nix

@@ -25,10 +25,14 @@ in {
       presets.wayland = enabled;
       hardware.printing = enabled;
       hardware.bluetooth = enabled;
+      #programs.fastfetch = {
+      #  enable = true;
+      #  firstNixOSInstall = 1729112485;
+      #};
       gpg = enabled;
       services.syncthing = {
-	enable = true;
-	user = "kylekrein";
+        enable = true;
+        user = "kylekrein";
       };
     };
 
@@ -71,44 +75,44 @@ in {
       element-desktop
     ];
     programs.kdeconnect.enable = true;
-  programs.kdeconnect.package = lib.mkDefault pkgs.kdePackages.kdeconnect-kde;
+    programs.kdeconnect.package = lib.mkDefault pkgs.kdePackages.kdeconnect-kde;
     fonts.packages = with pkgs; [
-    nerd-fonts.jetbrains-mono
-    font-awesome
-    nerd-fonts.symbols-only
-    hack-font
-    # microsoft fonts:
-    #corefonts
-    #vistafonts
-  ];
+      nerd-fonts.jetbrains-mono
+      font-awesome
+      nerd-fonts.symbols-only
+      hack-font
+      # microsoft fonts:
+      #corefonts
+      #vistafonts
+    ];
     environment.sessionVariables = {
-    MANPAGER = "emacsclient -c";
-    EDITOR = "emacsclient -c";
-  };
+      MANPAGER = "emacsclient -c";
+      EDITOR = "emacsclient -c";
+    };
     hardware = {
-    logitech.wireless.enable = true;
-  };
+      logitech.wireless.enable = true;
+    };
 
-  security.polkit.enable = true;
+    security.polkit.enable = true;
 
-  #programs.thunar = {
-  #	enable = true;
-  #	plugins = with pkgs.xfce; [
-  #		thunar-archive-plugin
-  #		thunar-volman
-  #	];
-  # };
-  #programs.xfconf.enable = true; # so thunar can save config
-  #services.gvfs.enable = true; # Mount, trash, and other functionalities
-  #services.tumbler.enable = true; # Thumbnail support for images
+    #programs.thunar = {
+    #	enable = true;
+    #	plugins = with pkgs.xfce; [
+    #		thunar-archive-plugin
+    #		thunar-volman
+    #	];
+    # };
+    #programs.xfconf.enable = true; # so thunar can save config
+    #services.gvfs.enable = true; # Mount, trash, and other functionalities
+    #services.tumbler.enable = true; # Thumbnail support for images
 
-  security.rtkit.enable = true;
-  services.pipewire = {
-    enable = true;
-    alsa.enable = true;
-    alsa.support32Bit = true;
-    pulse.enable = true;
-    jack.enable = true;
-  };
+    security.rtkit.enable = true;
+    services.pipewire = {
+      enable = true;
+      alsa.enable = true;
+      alsa.support32Bit = true;
+      pulse.enable = true;
+      jack.enable = true;
+    };
   };
 }