Make nixexprs work with latest nixexprs-lib changes

default.nix

@@ -1,41 +1,8 @@
-let
-  nixexprsLib = import <nixexprs-lib> {};
+let nixexprsLib = import <nixexprs-lib>;
 in nixexprsLib.channel {
-  # The name of this channel, so it's available at eval time
-  name = "infinisil";
+  name = "limeytexan";
 
-  # Allows specifying nixpkgs overlays
-  nixpkgsOverlays = [
-    # Override ncurses of all nixpkgs derivations to use our own
-    (self: super: {
-      # flox.self points to our own channel
-      ncurses = super.flox.self.ncurses;
-    })
-  ];
-
-  # Specifies channel dependencies
-  inputChannels = [ "chan1" "chan2" ];
-
-  # Specifies a dependency on the chan1 and chan2 channels
-  # This function is called with the resolved
-  outputsOverlays = [
-    # nixexprsLib has functions for auto-calling directories
-    (nixexprsLib.auto.python ./pythonPackages)
-    (nixexprsLib.auto.perl ./perlPackages)
-
-    # But users can also define packages directly
-    (self: super: {
-      # To avoid namespace-clashes, all flox attributes are under flox.*
-      foo = self.flox.builders.mkDerivation {
-        # Sets src to foo's source
-        project = "foo";
-
-        # Other channels accessible through flox.channels.*
-        buildInputs = [ self.flox.channels.chan1.foolib ];
-      };
-
-      # Example of importing a Nix expression from the project source
-      bar = import (self.flox.source "bar" {}) {};
-    })
+  outputOverlays = [
+    (nixexprsLib.auto.pkgs ./pkgs)
   ];
 }

pkgs/ptree/default.nix

@@ -1,6 +1,6 @@
 { flox, psmisc }:
 
-flox.mkDerivation {
+flox.builders.mkDerivation {
   project = "ptree";
   buildInputs = [ psmisc ];
 }