{ callPackage }:

let
  # Common passthru for all perl interpreters.
  # copied from lua
  passthruFun = { overrides, perlOnBuildForBuild, perlOnBuildForHost
    , perlOnBuildForTarget, perlOnHostForHost, perlOnTargetForTarget
    , perlAttr ? null, self # is perlOnHostForTarget
    }:
    let
      perlPackages = callPackage
        # Function that when called
        # - imports perl-packages.nix
        # - adds spliced package sets to the package set
        ({ stdenv, pkgs, perl, callPackage, makeScopeWithSplicing' }:
          let
            perlPackagesFun = callPackage ./perl-packages.nix {
              # allow 'perlPackages.override { pkgs = pkgs // { imagemagick = imagemagickBig; }; }' like in python3Packages
              # most perl packages aren't called with callPackage so it's not possible to override their arguments individually
              # the conditional is because the // above won't be applied to __splicedPackages and hopefully no one is doing that when cross-compiling
              pkgs = if stdenv.buildPlatform != stdenv.hostPlatform then
                pkgs.__splicedPackages
              else
                pkgs;
              inherit stdenv;
              perl = self;
            };

            otherSplices = {
              selfBuildBuild = perlOnBuildForBuild.pkgs;
              selfBuildHost = perlOnBuildForHost.pkgs;
              selfBuildTarget = perlOnBuildForTarget.pkgs;
              selfHostHost = perlOnHostForHost.pkgs;
              selfTargetTarget = perlOnTargetForTarget.pkgs or { };
            };
          in makeScopeWithSplicing' {
            inherit otherSplices;
            f = perlPackagesFun;
          }) { perl = self; };
    in rec {
      buildEnv = callPackage ./wrapper.nix {
        perl = self;
        inherit (pkgs) requiredPerlModules;
      };
      withPackages = f: buildEnv.override { extraLibs = f pkgs; };
      pkgs = perlPackages // (overrides pkgs);
      interpreter = "${self}/bin/perl";
      libPrefix = "lib/perl5/site_perl";
      perlOnBuild = perlOnBuildForHost.override {
        inherit overrides;
        self = perlOnBuild;
      };
    };

in rec {
  # Maint version
  perl536 = callPackage ./interpreter.nix {
    self = perl536;
    version = "5.36.3";
    sha256 = "sha256-8qGtiBFjkaF2Ji3ULfxS7yKvtA9MDpgQ8V1WHm8ccmo=";
    inherit passthruFun;
  };

  # Maint version
  perl538 = callPackage ./interpreter.nix {
    self = perl538;
    version = "5.38.2";
    sha256 = "sha256-oKMVNEUet7g8fWWUpJdUOlTUiLyQygD140diV39AZV4=";
    inherit passthruFun;
  };
}