nixos-build-vms: move to pkgs/by-name

nixos/modules/installer/tools/tools.nix

@@ -17,12 +17,7 @@ let
     '';
   });
 
-  nixos-build-vms = makeProg {
-    name = "nixos-build-vms";
-    src = ./nixos-build-vms/nixos-build-vms.sh;
-    inherit (pkgs) runtimeShell;
-    manPage = ./manpages/nixos-build-vms.8;
-  };
+  inherit (pkgs) nixos-build-vms;
 
   nixos-install = makeProg {
     name = "nixos-install";

pkgs/by-name/ni/nixos-build-vms/build-vms.nix

@@ -1,5 +1,6 @@
 { system ? builtins.currentSystem
 , config ? {}
+, nixpkgs
 , networkExpr
 }:
 
@@ -9,9 +10,9 @@ let
     imports = [ module ];
   }) (import networkExpr);
 
-  pkgs = import ../../../../.. { inherit system config; };
+  pkgs = import nixpkgs { inherit system config; };
 
-  testing = import ../../../../lib/testing-python.nix {
+  testing = import "${pkgs.path}/nixos/lib/testing-python.nix" {
     inherit system pkgs;
   };
 

pkgs/by-name/ni/nixos-build-vms/nixos-build-vms.sh

@@ -49,5 +49,6 @@ then
 fi
 
 # Build a network of VMs
-nix-build '<nixpkgs/nixos/modules/installer/tools/nixos-build-vms/build-vms.nix>' \
-    --argstr networkExpr "$networkExpr" "${nixBuildArgs[@]}"
+nix-build @buildVms@ \
+    --argstr networkExpr "$networkExpr" "${nixBuildArgs[@]}" \
+    --arg nixpkgs "<nixpkgs>"

pkgs/by-name/ni/nixos-build-vms/package.nix

@@ -0,0 +1,22 @@
+{
+  substituteAll,
+  runtimeShell,
+  installShellFiles,
+}:
+substituteAll {
+  name = "nixos-build-vms";
+  src = ./nixos-build-vms.sh;
+  inherit runtimeShell;
+  buildVms = ./build-vms.nix;
+
+  dir = "bin";
+  isExecutable = true;
+
+  nativeBuildInputs = [ installShellFiles ];
+
+  postInstall = ''
+    installManPage ${./nixos-build-vms.8}
+  '';
+
+  meta.mainProgram = "nixos-build-vms";
+}