{ lib, stdenv, recurseIntoAttrs, fetchgit, pkg-config, autoreconfHook, autoconf
, automake, libiconv, libtool, texinfo, gettext, gawk, rapidjson, gd, libharu
, lmdb, gmp, glibcLocales, mpfr, more, postgresql, hiredis, expat, tre }:

let
  buildExtension = lib.makeOverridable ({ name, gawkextlib
    , extraBuildInputs ? [ ], doCheck ? true, patches ? [ ] }:
    let is_extension = gawkextlib != null;
    in stdenv.mkDerivation rec {
      pname = "gawkextlib-${name}";
      version = "unstable-2022-10-20";

      src = fetchgit {
        url = "git://git.code.sf.net/p/gawkextlib/code";
        rev = "f6c75b4ac1e0cd8d70c2f6c7a8d58b4d94cfde97";
        sha256 = "sha256-0p3CrQ3TBl7UcveZytK/9rkAzn69RRM2GwY2eCeqlkg=";
      };

      inherit patches;

      postPatch = ''
        cd ${name}
      '';

      nativeBuildInputs =
        [ autoconf automake libtool autoreconfHook pkg-config texinfo gettext ];

      buildInputs = [ gawk ] ++ extraBuildInputs;
      propagatedBuildInputs = lib.optional is_extension gawkextlib;

      setupHook = if is_extension then ./setup-hook.sh else null;
      inherit gawk;

      inherit doCheck;
      nativeCheckInputs = [ more ];

      meta = with lib; {
        homepage = "https://sourceforge.net/projects/gawkextlib/";
        description = "Dynamically loaded extension libraries for GNU AWK";
        mainProgram = "xmlgawk";
        longDescription = ''
          The gawkextlib project provides several extension libraries for
          gawk (GNU AWK), as well as libgawkextlib containing some APIs that
          are useful for building gawk extension libraries. These libraries
          enable gawk to process XML data, interact with a PostgreSQL
          database, use the GD graphics library, and perform unlimited
          precision MPFR calculations.
        '';
        license = licenses.gpl3Plus;
        platforms = platforms.unix;
        maintainers = with maintainers; [ tomberek ];
      };
    });
  gawkextlib = buildExtension {
    gawkextlib = null;
    name = "lib";
  };
  libs = {
    abort = buildExtension {
      inherit gawkextlib;
      name = "abort";
    };
    aregex = buildExtension {
      inherit gawkextlib;
      name = "aregex";
      extraBuildInputs = [ tre ];
    };
    csv = buildExtension {
      inherit gawkextlib;
      name = "csv";
    };
    errno = buildExtension {
      inherit gawkextlib;
      name = "errno";
    };
    gd = buildExtension {
      inherit gawkextlib;
      name = "gd";
      extraBuildInputs = [ gd ];
    };
    haru = buildExtension {
      inherit gawkextlib;
      name = "haru";
      extraBuildInputs = [ libharu ];
      patches = [
        # Renames references to two identifiers with typos that libharu fixed in 2.4.4
        # https://github.com/libharu/libharu/commit/88271b73c68c521a49a15e3555ef00395aa40810
        ./fix-typos-corrected-in-libharu-2.4.4.patch
      ];
    };
    json = buildExtension {
      inherit gawkextlib;
      name = "json";
      extraBuildInputs = [ rapidjson ];
    };
    lmdb = buildExtension {
      inherit gawkextlib;
      name = "lmdb";
      extraBuildInputs = [ lmdb ];
      #  mdb_env_open(env, /dev/null)
      #! No such device
      #  mdb_env_open(env, /dev/null)
      #! Operation not supported by device
      doCheck = !stdenv.isDarwin;
    };
    mbs = buildExtension {
      inherit gawkextlib;
      name = "mbs";
      extraBuildInputs = [ glibcLocales ];
      #! "spät": length: 5, mbs_length: 6, wcswidth: 4
      doCheck = !stdenv.isDarwin;
    };
    mpfr = buildExtension {
      inherit gawkextlib;
      name = "mpfr";
      extraBuildInputs = [ gmp mpfr ];
    };
    nl_langinfo = buildExtension {
      inherit gawkextlib;
      name = "nl_langinfo";
    };
    pgsql = buildExtension {
      inherit gawkextlib;
      name = "pgsql";
      extraBuildInputs = [ postgresql ];
    };
    redis = buildExtension {
      inherit gawkextlib;
      name = "redis";
      extraBuildInputs = [ hiredis ];
    };
    select = buildExtension {
      inherit gawkextlib;
      name = "select";
    };
    timex = buildExtension {
      inherit gawkextlib;
      name = "timex";
    };
    xml = buildExtension {
      inherit gawkextlib;
      name = "xml";
      extraBuildInputs = [ expat libiconv ];
    };
  };
in recurseIntoAttrs (libs // {
  inherit gawkextlib buildExtension;
  full = builtins.attrValues libs;
})