DNSvizor package

flake.nix

@@ -23,6 +23,35 @@
   inputs.devshell.inputs.nixpkgs.follows = "nixpkgs";
   inputs.devshell.url = "github:numtide/devshell";
 
+  inputs.nix-filter.url = "github:numtide/nix-filter/3e1fff9";
+
+  # FixMe(maint/upstream): merge this branch upstream
+  #inputs.opam-nix.url = "github:tweag/opam-nix";
+  inputs.opam-nix.url = "github:ju1m/opam-nix/materialize-monorepo";
+  inputs.opam-nix.inputs.nixpkgs.follows = "nixpkgs";
+  inputs.opam-nix.inputs.flake-utils.follows = "flake-utils";
+  inputs.opam-nix.inputs.opam2json.follows = "opam2json";
+  inputs.opam-nix.inputs.opam-repository.follows = "opam-repository";
+  inputs.opam-nix.inputs.opam-overlays.follows = "opam-overlays";
+  inputs.opam-nix.inputs.mirage-opam-overlays.follows = "mirage-opam-overlays";
+
+  inputs.opam2json.url = "github:tweag/opam2json";
+  inputs.opam2json.inputs.nixpkgs.follows = "nixpkgs";
+
+  # update ocaml-related overlays to use new-enough ocaml packages
+  inputs.opam-repository = {
+    url = "github:ocaml/opam-repository";
+    flake = false;
+  };
+  inputs.opam-overlays = {
+    url = "github:dune-universe/opam-overlays";
+    flake = false;
+  };
+  inputs.mirage-opam-overlays = {
+    url = "github:dune-universe/mirage-opam-overlays";
+    flake = false;
+  };
+
   # See <https://github.com/ngi-nix/ngipkgs/issues/24> for plans to support Darwin.
   inputs.systems.url = "github:nix-systems/default-linux";
 

pkgs/by-name/default.nix

@@ -3,6 +3,7 @@
   pkgs,
   dream2nix,
   sources,
+  system,
 }:
 let
   inherit (builtins)
@@ -56,7 +57,13 @@ let
     in
     evaluated.config.public;
 
-  callPackage = pkgs.newScope (self // { inherit callPackage; });
+  callPackage = pkgs.newScope (
+    self
+    // {
+      inherit callPackage;
+      opam-nix = sources.opam-nix.lib.${system};
+    }
+  );
 
   mkSbtDerivation =
     x: