add passwd and group in environment.etc

make-image.nix

@@ -38,7 +38,6 @@ let
      /bin/init s 0755 0 0 ${s6-init-bin}/bin/init
      /bin/sh s 0755 0 0 ${busybox}/bin/sh
      /bin/busybox s 0755 0 0 ${busybox}/bin/busybox
-     /etc/passwd f 0644 0 0 echo  "root::0:0:root:/:/bin/sh"
   '';
 
   config-pseudofiles = pseudofile.write "config.etc"

modules/base.nix

@@ -37,7 +37,8 @@ in {
             PATH=${lib.makeBinPath (with pkgs; [ s6-init-bin busybox execline s6-linux-init s6-rc])}
             export PATH
           '');
-
+        passwd = { file = "root::0:0:root:/:/bin/sh\n"; };
+        group = { file = "root::0:\n"; };
       };
     };
   };