Beacon config, beacon integration into emacs

nixos/configuration-beacon.nix

@@ -7,10 +7,22 @@
   ...
 }: {
   imports = [
-    "${modulesPath}/installer/cd-dvd/installation-cd-minimal.nix"
+    "${modulesPath}/virtualisation/disk-image.nix"
     suiteModules.nixos.attic
   ];
 
+  image.format = "raw";
+
+  boot.initrd.availableKernelModules = [
+    "xhci_pci"
+    "usb_storage"
+    "uas"
+    "ahci"
+    "nvme"
+    "usbhid"
+    "sd_mod"
+  ];
+
   nixpkgs.hostPlatform = "x86_64-linux";
   nixpkgs.config.allowUnfree = true;
   nixpkgs.config.cudaSupport = true;
@@ -28,11 +40,13 @@
     ];
   };
 
+  security.sudo.wheelNeedsPassword = false;
+
   networking.hostName = "beacon";
   time.timeZone = "Asia/Jerusalem";
 
-  # NetworkManager is enabled by installation-cd-minimal; configure WiFi + static IP
-  # via a keyfile so it activates automatically on boot.
+  networking.networkmanager.enable = true;
+  hardware.enableRedistributableFirmware = true;
   networking.useDHCP = false;
   environment.etc."NetworkManager/system-connections/Zakobar.nmconnection" = {
     mode = "0600";
@@ -62,47 +76,27 @@
     '';
   };
 
-  # Storage drive (ext4, label "storage") provides persistent nix store and data dir.
-  # Prerequisites — run once on the storage drive before first boot:
-  #   mkfs.ext4 -L storage /dev/sdX
-  #   mount /dev/sdX /mnt/storage
-  #   mkdir -p /mnt/storage/nix-rw/store /mnt/storage/nix-rw/work /mnt/storage/data
-  #   umount /mnt/storage
-  # The drive is required to boot; boot halts if it is not plugged in.
-  fileSystems."/mnt/storage" = {
-    device = "/dev/disk/by-label/storage";
-    fsType = "ext4";
-    neededForBoot = true;
-    options = ["noatime"];
+  # Swap is created on first boot after boot.growPartition expands the root
+  # partition to the full drive size. Non-blocking: a failure just means no
+  # swap on this boot (retried next boot once the partition has grown).
+  systemd.services.beacon-swap = {
+    description = "Create and activate swapfile";
+    after = ["systemd-growfs@-.service" "local-fs.target"];
+    wantedBy = ["multi-user.target"];
+    serviceConfig = {
+      Type = "oneshot";
+      RemainAfterExit = true;
+    };
+    script = ''
+      if [ ! -f /swapfile ]; then
+        dd if=/dev/zero of=/swapfile bs=1M count=16384 status=progress
+        chmod 600 /swapfile
+        ${pkgs.util-linux}/bin/mkswap /swapfile
+      fi
+      ${pkgs.util-linux}/bin/swapon /swapfile
+    '';
   };
 
-  # Redirect the live CD's tmpfs rw-store to the storage drive so nix store
-  # writes survive across boots and don't consume RAM.
-  fileSystems."/nix/.rw-store" = lib.mkForce {
-    device = "/mnt/storage/nix-rw";
-    fsType = "none";
-    options = ["bind"];
-    depends = ["/mnt/storage"];
-    neededForBoot = true;
-  };
-
-  fileSystems."/data" = {
-    device = "/mnt/storage/data";
-    fsType = "none";
-    options = ["bind"];
-    depends = ["/mnt/storage"];
-  };
-
-  swapDevices = [
-    {
-      device = "/mnt/storage/swapfile";
-      size = 16384;
-    }
-  ];
-
-  # Ensure ext4 is available in initrd for the storage drive
-  boot.initrd.kernelModules = ["ext4"];
-
   # NVIDIA RTX 4050 — Ada Lovelace supports open kernel modules
   services.xserver.videoDrivers = ["nvidia"];
   hardware.nvidia = {
@@ -112,7 +106,7 @@
   };
   hardware.graphics.enable = true;
 
-  services.getty.autologinUser = lib.mkForce "aner";
+  services.getty.autologinUser = "aner";
 
   services.openssh = {
     enable = true;
@@ -135,8 +129,15 @@
     rsync
     tmux
     vim
+    wget
+    rclone
+    pciutils
+    nvtopPackages.nvidia
     cudaPackages.cudatoolkit
+    cudaPackages.cudnn
+    cudaPackages.nccl
     python3
+    direnv
   ];
 
   azos.attic.enable = true;