moved iso to pkgs folder

pkgs/nixos-iso/default.nix

@@ -0,0 +1,37 @@
+_: {
+  lib,
+  modulesPath,
+  pkgs,
+  ...
+}: {
+  imports = [
+    "${toString modulesPath}/profiles/minimal.nix"
+    "${toString modulesPath}/installer/cd-dvd/installation-cd-base.nix"
+  ];
+
+  environment = {
+    noXlibs = lib.mkOverride 500 false;
+    defaultPackages = [];
+    systemPackages = with pkgs; [gitMinimal neovim];
+    variables = {
+      EDITOR = "nvim";
+    };
+  };
+  documentation = {
+    man.enable = lib.mkOverride 500 false;
+    doc.enable = lib.mkOverride 500 false;
+  };
+
+  fonts.fontconfig.enable = lib.mkForce false;
+
+  isoImage = {
+    edition = lib.mkForce "custom-minimal";
+    isoName = lib.mkForce "NixOS.iso";
+  };
+  nix = {
+    settings = {
+      experimental-features = ["nix-command" "flakes" "repl-flake"];
+      auto-optimise-store = true;
+    };
+  };
+}