Initial NixOS flake: Hyprland (end-4 illogical-impulse), NVIDIA, gaming, dev tools

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01C5ydBQk68JYw8HXzUDLAyV

hosts/nixos-pc/default.nix

@@ -0,0 +1,39 @@
+{ pkgs, ... }:
+
+{
+  imports = [
+    ./hardware-configuration.nix
+    ../../modules/core.nix
+    ../../modules/desktop.nix
+    ../../modules/nvidia.nix
+    ../../modules/gaming.nix
+  ];
+
+  networking.hostName = "nixos-pc";
+
+  # systemd-boot lives on this install's OWN ESP (on the 1TB WD SSD) and only
+  # serves NixOS generations. rEFInd on the NVMe ESP stays the top-level OS
+  # picker and auto-detects this as a new entry — do not add Windows/Arch
+  # entries here.
+  boot.loader = {
+    systemd-boot = {
+      enable = true;
+      configurationLimit = 10;
+    };
+    efi.canTouchEfiVariables = true;
+  };
+
+  users.users.zephrynis = {
+    isNormalUser = true;
+    description = "zephrynis";
+    extraGroups = [ "wheel" "networkmanager" "video" "input" ];
+    shell = pkgs.fish; # end-4 dots are fish-centric
+  };
+  programs.fish.enable = true;
+
+  time.timeZone = "Europe/London";
+  i18n.defaultLocale = "en_GB.UTF-8";
+
+  # Set to the NixOS release of the ISO used at install time; never change afterwards.
+  system.stateVersion = "25.11";
+}

hosts/nixos-pc/hardware-configuration.nix

@@ -0,0 +1,26 @@
+# PLACEHOLDER — on install day, overwrite this file with the one produced by
+#   nixos-generate-config --root /mnt
+# (it lands in /mnt/etc/nixos/hardware-configuration.nix), then `git add` it —
+# flakes only evaluate tracked files. The generated file adds the correct
+# boot.initrd.availableKernelModules for this machine.
+#
+# The labels below match the mkfs commands in README.md (mkfs.ext4 -L nixos,
+# mkfs.fat -n NIXBOOT), so this stub is bootable even before replacement.
+{ ... }:
+
+{
+  fileSystems."/" = {
+    device = "/dev/disk/by-label/nixos";
+    fsType = "ext4";
+  };
+
+  fileSystems."/boot" = {
+    device = "/dev/disk/by-label/NIXBOOT";
+    fsType = "vfat";
+    options = [ "fmask=0077" "dmask=0077" ];
+  };
+
+  swapDevices = [ ]; # 128GB RAM — no swap
+
+  hardware.cpu.intel.updateMicrocode = true;
+}