add diskco pkg

pkgs/disko/example/stand-alone/configuration.nix

@@ -0,0 +1,54 @@
+{ pkgs
+, lib
+, ...
+}:
+let
+  # We just import from the repository for testing here:
+  disko = import ../../. {
+    inherit lib;
+  };
+  # In your own system use something like this:
+  #import (builtins.fetchGit {
+  #  url = "https://github.com/nix-community/disko";
+  #  ref = "master";
+  #}) {
+  #  inherit lib;
+  #};
+  cfg.disko.devices = {
+    disk = {
+      sda = {
+        device = "/dev/sda";
+        type = "disk";
+        content = {
+          type = "table";
+          format = "msdos";
+          partitions = [
+            {
+              name = "root";
+              part-type = "primary";
+              start = "1M";
+              end = "100%";
+              bootable = true;
+              content = {
+                type = "filesystem";
+                format = "ext4";
+                mountpoint = "/";
+              };
+            }
+          ];
+        };
+      };
+    };
+  };
+in
+{
+  imports = [
+    (disko.config cfg)
+  ];
+  boot.loader.grub.devices = [ "/dev/sda" ];
+  system.stateVersion = "22.05";
+  environment.systemPackages = with pkgs; [
+    (pkgs.writeScriptBin "tsp-create" (disko.create cfg))
+    (pkgs.writeScriptBin "tsp-mount" (disko.mount cfg))
+  ];
+}