Some Zig applications like `ncdu` requires extra information like `zig.meat.platforms` and `zig.hook`

ncdu in nixpkgs
zig in nixpkgs

I need to do this to make my configuration work:

  zig = final: prev: let
    # ncdu requres zig.meta and zig.hook
    meta = prev.zig.meta;
    # though zig version of zig.hook still refers to the original zig.
    passthru = prev.lib.getAttrs ["hook"] prev.zig.passthru;
  in rec {
    zig = inputs.zig-overlay.packages.${final.system}.master.overrideAttrs (f: p: {
      passthru = passthru;
      meta = meta // inputs.zig-overlay.packages.${final.system}.master.meta;
    });
    zls = inputs.zls.packages.${final.system}.default;
  };

Start by reviewing the overlay package definition and the linked nixpkgs expressions for ncdu and Zig. Reproduce the configuration shown, then check how the overlay's Zig package exposes meta and passthru. Done means applications such as ncdu can use the overlay package without manually copying zig.meta and zig.hook.