hosts/alyssum: init

flake.nix

@@ -80,6 +80,7 @@
         };
     in
     {
+      nixosConfigurations."alyssum" = mkSystem nixpkgs "alyssum" "x86_64-linux" [];
       nixosConfigurations."anemone" = mkSystem nixpkgs "anemone" "x86_64-linux" [];
       nixosConfigurations."dandelion" = mkSystem nixpkgs "dandelion" "aarch64-linux" [];
       nixosConfigurations."hyacinth" = mkSystem nixpkgs "hyacinth" "x86_64-linux" [];

hosts/alyssum/default.nix

@@ -0,0 +1,28 @@
+{ inputs, modules, modulesPath, ... }: {
+  networking.hostName = "alyssum";
+  system.stateVersion = "25.11";
+  time.timeZone = "Australia/Melbourne";
+
+  age.secrets = {
+    # acme_dns.file = ../../secrets/acme_dns.age;
+  };
+
+  imports = with modules.system; [
+    (modulesPath + "/profiles/qemu-guest.nix")
+    home-manager
+
+    base
+    kernel
+    nix-stable
+    packages
+    security
+
+    ./filesystem.nix
+    ./kernel.nix
+    ./networking.nix
+
+    ../../users/hana
+  ];
+
+  me.environment = "headless";
+}

hosts/alyssum/filesystem.nix

@@ -0,0 +1,34 @@
+{ ... }:
+let
+  bind = src: {
+    depends = [ "/nix" ];
+    device = src;
+    fsType = "none";
+    neededForBoot = true;
+    options = [ "bind" ];
+  };
+
+  mkLabelMount = label: type: {
+    device = "/dev/disk/by-label/${label}";
+    fsType = type;
+    options = [ "defaults" "relatime" ];
+  };
+  mkBtrfsMount = name: subvol: atime: mkLabelMount name "btrfs" // {
+    options = [ "autodefrag" "compress=zstd:3" "defaults" "discard=async" "space_cache=v2" "ssd" "subvol=${subvol}" (if atime then "relatime" else "noatime") ];
+  };
+  submount = mkBtrfsMount "alyssum";
+in {
+  fileSystems = {
+    "/" = {
+      device = "rootfs";
+      fsType = "tmpfs";
+      options = [ "defaults" "size=8G" "mode=755" ];
+    };
+    "/boot" = mkLabelMount "stem" "vfat";
+
+    "/nix" = submount "/@/nix" false;
+    "/persist" = (submount "/@/persist" true) // { neededForBoot = true; };
+    "/persist/.snapshots" = submount "/snap/persist" false;
+    "/var/log/journal" = bind "/persist/journal";
+  };
+}

hosts/alyssum/kernel.nix

@@ -0,0 +1,10 @@
+{ ... }: {
+  boot = {
+    loader = {
+      efi.canTouchEfiVariables = true;
+      systemd-boot.enable = true;
+    };
+    initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "xen_blkfront" ];
+    initrd.kernelModules = [ "nvme" ];
+  };
+}

hosts/alyssum/networking.nix

@@ -0,0 +1,3 @@
+{ ... }: {
+  networking.useDHCP = true;
+}

hosts/alyssum/packages.nix

@@ -0,0 +1,14 @@
+{ pkgs, ... }: {
+  environment.systemPackages = with pkgs; [
+    git
+    htop
+    jq
+    neovim
+    rsync
+    sshfs
+    wget
+
+    kitty.terminfo
+  ];
+  environment.variables.EDITOR = "nvim";
+}