nixpkgs/pkgs/development/libraries/gmime/3.nix

{ lib, stdenv, fetchurl, pkg-config, glib, zlib, gnupg, gpgme, libidn2, libunistring, gobject-introspection
, vala }:

stdenv.mkDerivation rec {
  version = "3.2.12";
  pname = "gmime";

  src = fetchurl { # https://github.com/jstedfast/gmime/releases
    url = "https://github.com/jstedfast/gmime/releases/download/${version}/gmime-${version}.tar.xz";
    sha256 = "sha256-OPm3aBgjQsSExBIobbjVgRaX/4FiQ3wFea3w0G4icFs=";
  };

  outputs = [ "out" "dev" ];

  nativeBuildInputs = [ pkg-config gobject-introspection vala ];
  buildInputs = [
    zlib
    gpgme
    libidn2
    libunistring
    vala # for share/vala/Makefile.vapigen
  ];
  propagatedBuildInputs = [ glib ];
  configureFlags = [
    "--enable-introspection=yes"
    "--enable-vala=yes"
  ] ++ lib.optionals (stdenv.buildPlatform != stdenv.hostPlatform) [ "ac_cv_have_iconv_detect_h=yes" ];

  postPatch = ''
    substituteInPlace tests/testsuite.c \
      --replace /bin/rm rm
  '';

  preConfigure = ''
    PKG_CONFIG_VAPIGEN_VAPIGEN="$(type -p vapigen)"
    export PKG_CONFIG_VAPIGEN_VAPIGEN
  '' + lib.optionalString (stdenv.buildPlatform != stdenv.hostPlatform) ''
    cp ${if stdenv.hostPlatform.isMusl then ./musl-iconv-detect.h else ./iconv-detect.h} ./iconv-detect.h
  '';

  nativeCheckInputs = [ gnupg ];

  doCheck = true;

  enableParallelBuilding = true;

  meta = with lib; {
    homepage = "https://github.com/jstedfast/gmime/";
    description = "A C/C++ library for creating, editing and parsing MIME messages and structures";
    license = licenses.lgpl21Plus;
    maintainers = with maintainers; [ ];
    platforms = platforms.unix;
  };
}