configuration for users and groups

modules/users.nix

@@ -0,0 +1,26 @@
+{ lib, pkgs, config, ...}:
+let
+  inherit (lib) concatStrings concatStringsSep mapAttrsToList; # mkEnableOption mkOption types isDerivation isType hasAttr ;
+  inherit (builtins) toString;
+  inherit (pkgs.pseudofile) dir symlink;
+#  inherit (pkgs) busybox;
+  passwd-file  =
+    let lines =  mapAttrsToList (name: u: "${name}:${if u ? passwd  then u.passwd else "!!"}:${toString u.uid}:${toString u.gid}:${u.gecos}:${u.dir}:${u.shell}\n" )
+      config.users;
+    in concatStrings lines;
+  group-file =
+    let lines = mapAttrsToList
+      (name: {gid, usernames ? []}:
+        "${name}:x:${toString gid}:${concatStringsSep "," usernames}\n" )
+      config.groups;
+    in concatStrings lines;
+in {
+  config = {
+    filesystem = dir {
+      etc = dir {
+        passwd = { file = passwd-file; };
+        group = { file = group-file; };
+      };
+    };
+  };
+}