packaging: make pegtl use the __forDefaults mechanism

This avoids needing to pass it in when callPackage'ing Lix from external
code.

Change-Id: Ie07e84a151e38614064609a2f6dbff165e193be7

1 files changed, 6 insertions, 3 deletions

diff --git a/flake.nix b/flake.nix
index c3707c919..2b5f112a4 100644
--- a/flake.nix
+++ b/flake.nix
@@ -195,16 +195,19 @@
             busybox-sandbox-shell = final.busybox-sandbox-shell or final.default-busybox-sandbox-shell;
           };
 
-          pegtl = final.callPackage ./misc/pegtl.nix { };
+          pegtl = final.nix.passthru.pegtl;
 
           # Export the patched version of boehmgc that Lix uses into the overlay
           # for consumers of this flake.
-          boehmgc-nix = final.nix.boehmgc-nix;
+          boehmgc-nix = final.nix.passthru.boehmgc-nix;
           # And same thing for our build-release-notes package.
-          build-release-notes = final.nix.build-release-notes;
+          build-release-notes = final.nix.passthru.build-release-notes;
         };
     in
     {
+      # for repl debugging
+      inherit self;
+
       # A Nixpkgs overlay that overrides the 'nix' and
       # 'nix.perl-bindings' packages.
       overlays.default = overlayFor (p: p.stdenv);