{ lib
, stdenvNoCC, stdenv
, fetchNetBSD
, bsdSetupHook, netbsdSetupHook
, makeMinimal
, install, tsort, lorder
, mandoc, groff, statHook, rsync
, compatIfNeeded
, defaultMakeFlags
}:

lib.makeOverridable (attrs: let
  stdenv' = if attrs.noCC or false then stdenvNoCC else stdenv;
in stdenv'.mkDerivation ({
  pname = "${attrs.pname or (baseNameOf attrs.path)}-netbsd";
  inherit (attrs) version;
  src = fetchNetBSD attrs.path attrs.version attrs.sha256;

  extraPaths = [ ];

  nativeBuildInputs = [
    bsdSetupHook netbsdSetupHook
    makeMinimal
    install tsort lorder mandoc groff statHook rsync
  ];
  buildInputs = compatIfNeeded;

  HOST_SH = stdenv'.shell;

  MACHINE_ARCH = {
    i486 = "i386";
    i586 = "i386";
    i686 = "i386";
  }.${stdenv'.hostPlatform.parsed.cpu.name}
    or stdenv'.hostPlatform.parsed.cpu.name;

  MACHINE = {
    x86_64 = "amd64";
    aarch64 = "evbarm64";
    i486 = "i386";
    i586 = "i386";
    i686 = "i386";
  }.${stdenv'.hostPlatform.parsed.cpu.name}
    or stdenv'.hostPlatform.parsed.cpu.name;

  COMPONENT_PATH = attrs.path;

  makeFlags = defaultMakeFlags;

  strictDeps = true;

  meta = with lib; {
    maintainers = with maintainers; [ matthewbauer qyliss ];
    platforms = platforms.unix;
    license = licenses.bsd2;
  };

} // lib.optionalAttrs stdenv'.hasCC {
  # TODO should CC wrapper set this?
  CPP = "${stdenv'.cc.targetPrefix}cpp";
} // lib.optionalAttrs stdenv'.isDarwin {
  MKRELRO = "no";
} // lib.optionalAttrs (stdenv'.cc.isClang or false) {
  HAVE_LLVM = lib.versions.major (lib.getVersion stdenv'.cc.cc);
} // lib.optionalAttrs (stdenv'.cc.isGNU or false) {
  HAVE_GCC = lib.versions.major (lib.getVersion stdenv'.cc.cc);
} // lib.optionalAttrs (stdenv'.isx86_32) {
  USE_SSP = "no";
} // lib.optionalAttrs (attrs.headersOnly or false) {
  installPhase = "includesPhase";
  dontBuild = true;
} // attrs // {
  # Files that use NetBSD-specific macros need to have nbtool_config.h
  # included ahead of them on non-NetBSD platforms.
  postPatch = lib.optionalString (!stdenv'.hostPlatform.isNetBSD) ''
    set +e
    grep -Zlr "^__RCSID
    ^__BEGIN_DECLS" $COMPONENT_PATH | xargs -0r grep -FLZ nbtool_config.h |
        xargs -0tr sed -i '0,/^#/s//#include <nbtool_config.h>\n\0/'
    set -e
  '' + attrs.postPatch or "";
}))