/* This file defines the composition for Lua packages.  It has
   been factored out of all-packages.nix because there are many of
   them.  Also, because most Nix expressions for Lua packages are
   trivial, most are actually defined here.  I.e. there's no function
   for each package in a separate file: the call to the function would
   be almost as must code as the function itself. */

{ fetchurl, fetchzip, stdenv, lua, callPackage, unzip, zziplib, pkgconfig, libtool
, pcre, oniguruma, gnulib, tre, glibc, sqlite, openssl, expat, cairo
, perl, gtk2, python, glib, gobjectIntrospection, libevent, zlib, autoreconfHook
, mysql, postgresql, cyrus_sasl
, fetchFromGitHub, libmpack, which, fetchpatch, writeText
}:

let
  isLua51 = lua.luaversion == "5.1";
  isLua52 = lua.luaversion == "5.2";
  isLuaJIT = (builtins.parseDrvName lua.name).name == "luajit";

  platformString =
    if stdenv.isDarwin then "macosx"
    else if stdenv.isFreeBSD then "freebsd"
    else if stdenv.isLinux then "linux"
    else if stdenv.isSunOS then "solaris"
    else throw "unsupported platform";

  self = _self;
  _self = with self; {
  inherit lua;
  inherit (stdenv.lib) maintainers;

  # helper functions for dealing with LUA_PATH and LUA_CPATH
  getPath       = lib : type : "${lib}/lib/lua/${lua.luaversion}/?.${type};${lib}/share/lua/${lua.luaversion}/?.${type}";
  getLuaPath    = lib : getPath lib "lua";
  getLuaCPath   = lib : getPath lib "so";

  #define build lua package function
  buildLuaPackage = callPackage ../development/lua-modules/generic {
    inherit lua writeText;
  };

  luarocks = callPackage ../development/tools/misc/luarocks {
    inherit lua;
  };

  bit32 = buildLuaPackage rec {
    version = "5.3.0";
    name = "bit32-${version}";

    src = fetchFromGitHub {
      owner = "keplerproject";
      repo = "lua-compat-5.2";
      rev = "bitlib-${version}";
      sha256 = "1ipqlbvb5w394qwhm2f3w6pdrgy8v4q8sps5hh3pqz14dcqwakhj";
    };

    buildPhase = ''
      cc ${if stdenv.isDarwin then "-bundle -undefined dynamic_lookup -all_load" else "-shared"} -Ic-api lbitlib.c -o bit32.so
    '';

    installPhase = ''
      mkdir -p $out/lib/lua/${lua.luaversion}
      install -p bit32.so $out/lib/lua/${lua.luaversion}
    '';

    meta = with stdenv.lib; {
      description = "Lua 5.2 bit manipulation library";
      homepage = "http://www.lua.org/manual/5.2/manual.html#6.7";
      license = licenses.mit;
      maintainers = with maintainers; [ lblasc ];
      platforms = platforms.unix;
    };
  };

  luabitop = buildLuaPackage rec {
    version = "1.0.2";
    name = "bitop-${version}";

    src = fetchurl {
      url = "http://bitop.luajit.org/download/LuaBitOp-${version}.tar.gz";
      sha256 = "16fffbrgfcw40kskh2bn9q7m3gajffwd2f35rafynlnd7llwj1qj";
    };

    buildFlags = stdenv.lib.optionalString stdenv.isDarwin "macosx";

    postPatch = stdenv.lib.optionalString stdenv.isDarwin ''
      substituteInPlace Makefile --replace 10.4 10.5
    '';

    preBuild = ''
      makeFlagsArray=(
        ${stdenv.lib.optionalString stdenv.cc.isClang "CC=$CC"}
        INCLUDES="-I${lua}/include"
        LUA="${lua}/bin/lua");
    '';

    installPhase = ''
      mkdir -p $out/lib/lua/${lua.luaversion}
      install -p bit.so $out/lib/lua/${lua.luaversion}
    '';

    meta = with stdenv.lib; {
      description = "C extension module for Lua which adds bitwise operations on numbers";
      homepage = "http://bitop.luajit.org";
      license = licenses.mit;
      maintainers = with maintainers; [ ];
    };
  };

  luacheck = buildLuaPackage rec {
    pname = "luacheck";
    version = "0.20.0";
    name = "${pname}-${version}";

    src = fetchFromGitHub {
      owner = "mpeterv";
      repo = "luacheck";
      rev = "${version}";
      sha256 = "0ahfkmqcjhlb7r99bswy1sly6d7p4pyw5f4x4fxnxzjhbq0c5qcs";
    };

    propagatedBuildInputs = [ lua ];

    # No Makefile.
    dontBuild = true;

    installPhase = ''
      ${lua}/bin/lua install.lua $out
    '';

    meta = with stdenv.lib; {
      description = "A tool for linting and static analysis of Lua code";
      homepage = https://github.com/mpeterv/luacheck;
      license = licenses.mit;
      maintainers = with maintainers; [ vyp ];
      platforms = platforms.unix;
    };
  };

  luacyrussasl = buildLuaPackage rec {
    version = "1.1.0";
    name = "lua-cyrussasl-${version}";
    src = fetchFromGitHub {
      owner = "JorjBauer";
      repo = "lua-cyrussasl";
      rev = "v${version}";
      sha256 = "14kzm3vk96k2i1m9f5zvpvq4pnzaf7s91h5g4h4x2bq1mynzw2s1";
    };

    preBuild = ''
      makeFlagsArray=(
        CFLAGS="-O2 -fPIC"
        LDFLAGS="-O -shared -fpic -lsasl2"
        LUAPATH="$out/share/lua/${lua.luaversion}"
        CPATH="$out/lib/lua/${lua.luaversion}"
      );
      mkdir -p $out/{share,lib}/lua/${lua.luaversion}
    '';

    buildInputs = [ cyrus_sasl ];

    meta = with stdenv.lib; {
      homepage = "https://github.com/JorjBauer/lua-cyrussasl";
      description = "Cyrus SASL library for Lua 5.1+";
      license = licenses.bsd3;
    };
  };

  luaevent = buildLuaPackage rec {
    version = "0.4.4";
    name = "luaevent-${version}";

    src = fetchFromGitHub {
      owner = "harningt";
      repo = "luaevent";
      rev = "v${version}";
      sha256 = "1krzxr0jkv3gmhpckp02byhdd9s5dd0hpyqc8irc8i79dd8x0p53";
    };

    preBuild = ''
      makeFlagsArray=(
        INSTALL_DIR_LUA="$out/share/lua/${lua.luaversion}"
        INSTALL_DIR_BIN="$out/lib/lua/${lua.luaversion}"
        LUA_INC_DIR="${lua}/include"
      );
    '';

    buildInputs = [ libevent ];

    propagatedBuildInputs = [ luasocket ];

    meta = with stdenv.lib; {
      homepage = http://luaforge.net/projects/luaevent/;
      description = "Binding of libevent to Lua";
      license = licenses.mit;
      maintainers = with maintainers; [ koral ];
    };
  };

  luaexpat = buildLuaPackage rec {
    version = "1.3.0";
    name = "expat-${version}";

    src = fetchurl {
      url = "https://matthewwild.co.uk/projects/luaexpat/luaexpat-${version}.tar.gz";
      sha256 = "1hvxqngn0wf5642i5p3vcyhg3pmp102k63s9ry4jqyyqc1wkjq6h";
    };

    buildInputs = [ expat ];

    preConfigure = stdenv.lib.optionalString stdenv.isDarwin ''
      substituteInPlace Makefile \
      --replace '-shared' '-bundle -undefined dynamic_lookup -all_load'
    '';

    preBuild = ''
      makeFlagsArray=(
        LUA_LDIR="$out/share/lua/${lua.luaversion}"
        LUA_INC="-I${lua}/include" LUA_CDIR="$out/lib/lua/${lua.luaversion}"
        EXPAT_INC="-I${expat.dev}/include");
    '';

    disabled = isLuaJIT;

    meta = with stdenv.lib; {
      description = "SAX XML parser based on the Expat library";
      homepage = "http://matthewwild.co.uk/projects/luaexpat";
      license = licenses.mit;
      maintainers = with maintainers; [ flosse ];
      platforms = platforms.unix;
    };
  };

  luadbi = buildLuaPackage rec {
    name = "luadbi-${version}";
    version = "0.5";
    src = fetchurl {
      url = "https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/luadbi/luadbi.${version}.tar.gz";
      sha256 = "07ikxgxgfpimnwf7zrqwcwma83ss3wm2nzjxpwv2a1c0vmc684a9";
    };
    sourceRoot = ".";

    buildInputs = [ mysql.connector-c postgresql sqlite ];

    preConfigure = ''
      substituteInPlace Makefile --replace CC=gcc CC=cc
    '' + stdenv.lib.optionalString stdenv.isDarwin ''
      substituteInPlace Makefile \
        --replace '-shared' '-bundle -undefined dynamic_lookup -all_load'
    '';

    NIX_CFLAGS_COMPILE = [
      "-I${mysql.connector-c}/include/mysql"
      "-L${mysql.connector-c}/lib/mysql"
      "-I${postgresql}/include/server"
    ];

    installPhase = ''
      mkdir -p $out/lib/lua/${lua.luaversion}
      install -p DBI.lua *.so $out/lib/lua/${lua.luaversion}
    '';

    meta = with stdenv.lib; {
      homepage = "https://code.google.com/archive/p/luadbi/";
      platforms = stdenv.lib.platforms.unix;
    };
  };

  luafilesystem = buildLuaPackage rec {
    version = "1.6.3";
    name = "filesystem-${version}";

    src = fetchFromGitHub {
      owner = "keplerproject";
      repo = "luafilesystem";
      rev = "v${stdenv.lib.replaceChars ["."] ["_"] version}";
      sha256 = "1hxcnqj53540ysyw8fzax7f09pl98b8f55s712gsglcdxp2g2pri";
    };

    preConfigure = ''
      substituteInPlace config --replace "CC= gcc" "";
    ''
    + stdenv.lib.optionalString stdenv.isDarwin ''
      substituteInPlace config \
      --replace 'LIB_OPTION= -shared' '###' \
      --replace '#LIB_OPTION= -bundle' 'LIB_OPTION= -bundle'
      substituteInPlace Makefile --replace '10.3' '10.5'
    '';

    meta = with stdenv.lib; {
      description = "Lua library complementing filesystem-related functions";
      homepage = "https://github.com/keplerproject/luafilesystem";
      license = licenses.mit;
      maintainers = with maintainers; [ flosse ];
      platforms = platforms.unix;
    };
  };

  luaposix = buildLuaPackage rec {
    name = "posix-${version}";
    version = "34.0.4";

    src = fetchFromGitHub {
      owner = "luaposix";
      repo = "luaposix";
      rev = "release-v${version}";
      sha256 = "0p5583vidsm7s97zihf47c34vscwgbl86axrnj44j328v45kxb2z";
    };

    propagatedBuildInputs = [ std.normalize bit32 ];

    buildPhase = ''
      ${lua}/bin/lua build-aux/luke \
        package="luaposix" \
        version="${version}"
    '';

    installPhase = ''
      ${lua}/bin/lua build-aux/luke install --quiet \
        INST_LIBDIR="$out/lib/lua/${lua.luaversion}" \
        INST_LUADIR="$out/share/lua/${lua.luaversion}"
    '';

    meta = with stdenv.lib; {
      description = "Lua bindings for POSIX API";
      homepage = "https://github.com/luaposix/luaposix";
      license = licenses.mit;
      maintainers = with maintainers; [ vyp lblasc ];
      platforms = platforms.unix;
    };
  };

  lpty = buildLuaPackage rec {
    version = "1.2.1";
    name = "lpty-${version}";

    src = fetchurl {
      url = "http://www.tset.de/downloads/lpty-${version}-1.tar.gz";
      sha256 = "0rgvbpymcgdkzdwfag607xfscs9xyqxg0dj0qr5fv906mi183gs6";
    };

    preBuild = ''
      makeFlagsArray=(
        INST_LIBDIR="$out/lib/lua/${lua.luaversion}"
        INST_LUADIR="$out/share/lua/${lua.luaversion}"
        LUA_BINDIR="${lua}/bin"
        LUA_INCDIR="-I${lua}/include"
        LUA_LIBDIR="-L${lua}/lib"
        );
    '';

    meta = with stdenv.lib; {
      description = "PTY control for Lua";
      homepage = "http://www.tset.de/lpty";
      license = licenses.mit;
      maintainers = with maintainers; [ vyp ];
      platforms = platforms.linux;
    };
  };

  lua-iconv = buildLuaPackage rec {
    name = "lua-iconv-${version}";
    version = "7";

    src = fetchFromGitHub {
      owner = "ittner";
      repo = "lua-iconv";
      rev = name;
      sha256 = "0rd76966qlxfp8ypkyrbif76nxnm1acclqwfs45wz3972jsk654i";
    };

    preBuild = ''
      makeFlagsArray=(
        INSTALL_PATH="$out/lib/lua/${lua.luaversion}"
      );
    '';

    meta = with stdenv.lib; {
      description = "Lua bindings for POSIX iconv";
      homepage = "https://ittner.github.io/lua-iconv/";
      license = licenses.mit;
      maintainers = with maintainers; [ richardipsum ];
      platforms = platforms.unix;
    };
  };

  luasec = buildLuaPackage rec {
    name = "sec-0.6";

    src = fetchFromGitHub {
      owner = "brunoos";
      repo = "luasec";
      rev = "lua${name}";
      sha256 = "0wv8l7f7na7kw5xn8mjik2wpxbizl7zvvp5s7fcwvz9kl5jdpk5b";
    };

    buildInputs = [ openssl ];

    preBuild = ''
      makeFlagsArray=(
        ${platformString}
        LUAPATH="$out/lib/lua/${lua.luaversion}"
        LUACPATH="$out/lib/lua/${lua.luaversion}"
        INC_PATH="-I${lua}/include"
        LIB_PATH="-L$out/lib");
    '';

    meta = with stdenv.lib; {
      description = "Lua binding for OpenSSL library to provide TLS/SSL communication";
      homepage = "https://github.com/brunoos/luasec";
      license = licenses.mit;
      maintainers = with maintainers; [ flosse ];
      platforms = platforms.unix;
    };
  };

  luasocket = buildLuaPackage rec {
    name = "socket-${version}";
    version = "3.0-rc1";

    src = fetchFromGitHub {
      owner = "diegonehab";
      repo = "luasocket";
      rev = "v${version}";
      sha256 = "1chs7z7a3i3lck4x7rz60ziwbf793gw169hpjdfca8y4yf1hzsxk";
    };

    patchPhase = stdenv.lib.optionalString stdenv.isDarwin ''
      substituteInPlace src/makefile --replace gcc cc \
        --replace 10.3 10.5
    '';

    preBuild = ''
      makeFlagsArray=(
        LUAV=${lua.luaversion}
        PLAT=${platformString}
        prefix=$out
      );
    '';

    doCheck = false; # fails to find itself

    installTargets = [ "install" "install-unix" ];

    meta = with stdenv.lib; {
      description = "Network support for Lua";
      homepage = "http://w3.impa.br/~diego/software/luasocket/";
      license = licenses.mit;
      maintainers = with maintainers; [ ];
      platforms = with platforms; darwin ++ linux ++ freebsd ++ illumos;
    };
  };

  luxio = buildLuaPackage rec {
    name = "luxio-${version}";
    version = "13";

    src = fetchurl {
      url = "https://git.gitano.org.uk/luxio.git/snapshot/luxio-luxio-13.tar.bz2";
      sha256 = "1hvwslc25q7k82rxk461zr1a2041nxg7sn3sw3w0y5jxf0giz2pz";
    };

    nativeBuildInputs = [ which pkgconfig ];

    postPatch = ''
      patchShebangs .
    '';

    preBuild = ''
      makeFlagsArray=(
        INST_LIBDIR="$out/lib/lua/${lua.luaversion}"
        INST_LUADIR="$out/share/lua/${lua.luaversion}"
        LUA_BINDIR="$out/bin"
        INSTALL=install
        );
    '';

    meta = with stdenv.lib; {
      description = "Lightweight UNIX I/O and POSIX binding for Lua";
      homepage = "https://www.gitano.org.uk/luxio/";
      license = licenses.mit;
      maintainers = with maintainers; [ richardipsum ];
      platforms = platforms.unix;
    };
  };

  luazip = buildLuaPackage rec {
    name = "zip-${version}";
    version = "2007-10-30";

    src = fetchFromGitHub {
      owner = "luaforge";
      repo = "luazip";
      rev = "0b8f5c958e170b1b49f05bc267bc0351ad4dfc44";
      sha256 = "0zrrwhmzny5zbpx91bjbl77gzkvvdi3qhhviliggp0aj8w3faxsr";
    };

    buildInputs = [ zziplib ];

    patches = [ ../development/lua-modules/zip.patch ];

    # Does not currently work under Lua 5.2 or LuaJIT.
    disabled = isLua52 || isLuaJIT;

    meta = with stdenv.lib; {
      description = "Lua library to read files stored inside zip files";
      homepage = "https://github.com/luaforge/luazip";
      license = licenses.mit;
      maintainers = with maintainers; [ vyp ];
      platforms = platforms.linux;
    };
  };

  luazlib = buildLuaPackage rec {
    name = "zlib-${version}";
    version = "1.1";

    src = fetchFromGitHub {
      owner = "brimworks";
      repo = "lua-zlib";
      rev = "v${version}";
      sha256 = "1520lk4xpf094xn2zallqgqhs0zb4w61l49knv9y8pmhkdkxzzgy";
    };

    buildInputs = [ zlib ];

    preConfigure = ''
      substituteInPlace Makefile --replace gcc cc --replace "-llua" ""
    '';

    preBuild = ''
      makeFlagsArray=(
        ${platformString}
        LUAPATH="$out/share/lua/${lua.luaversion}"
        LUACPATH="$out/lib/lua/${lua.luaversion}"
        INCDIR="-I${lua}/include"
        LIBDIR="-L${lua}/lib");
    '';

    preInstall = "mkdir -p $out/lib/lua/${lua.luaversion}";

    meta = with stdenv.lib; {
      description = "Simple streaming interface to zlib for Lua";
      homepage = https://github.com/brimworks/lua-zlib;
      license = licenses.mit;
      maintainers = with maintainers; [ koral ];
      platforms = platforms.unix;
    };
  };


  luastdlib = buildLuaPackage rec {
    name = "stdlib-${version}";
    version = "41.2.1";

    src = fetchFromGitHub {
      owner = "lua-stdlib";
      repo = "lua-stdlib";
      rev = "release-v${version}";
      sha256 = "03wd1qvkrj50fjszb2apzdkc8d5bpfbbi9pajl0vbrlzzmmi3jlq";
    };

    nativeBuildInputs = [ autoreconfHook unzip ];

    meta = with stdenv.lib; {
      description = "General Lua libraries";
      homepage = "https://github.com/lua-stdlib/lua-stdlib";
      license = licenses.mit;
      maintainers = with maintainers; [ vyp ];
      platforms = platforms.linux;
    };
  };

  lrexlib = buildLuaPackage rec {
    name = "lrexlib-${version}";
    version = "2.8.0";

    src = fetchFromGitHub {
      owner = "rrthomas";
      repo = "lrexlib";
      rev = "rel-2-8-0";
      sha256 = "1c62ny41b1ih6iddw5qn81gr6dqwfffzdp7q6m8x09zzcdz78zhr";
    };

    buildInputs = [ luastdlib pcre luarocks oniguruma gnulib tre glibc ];

    buildPhase = let
      luaVariable = ''LUA_PATH="${luastdlib}/share/lua/${lua.luaversion}/?/init.lua;${luastdlib}/share/lua/${lua.luaversion}/?.lua"'';
      pcreVariable = "PCRE_DIR=${pcre.out} PCRE_INCDIR=${pcre.dev}/include";
      onigVariable = "ONIG_DIR=${oniguruma}";
      gnuVariable = "GNU_INCDIR=${gnulib}/lib";
      treVariable = "TRE_DIR=${tre}";
      posixVariable = "POSIX_DIR=${glibc.dev}";
    in ''
      sed -e 's@$(LUAROCKS) $(LUAROCKS_COMMAND) $$i;@$(LUAROCKS) $(LUAROCKS_COMMAND) $$i ${pcreVariable} ${onigVariable} ${gnuVariable} ${treVariable} ${posixVariable};@' -i Makefile
      ${luaVariable} make
    '';

    installPhase = ''
      mkdir -pv $out;
      cp -r luarocks/lib $out;
    '';

    meta = with stdenv.lib; {
      description = "Lua bindings of various regex library APIs";
      homepage = "https://github.com/rrthomas/lrexlib";
      license = licenses.mit;
      maintainers = with maintainers; [ vyp ];
      platforms = platforms.linux;
    };
  };

  luasqlite3 = buildLuaPackage rec {
    name = "sqlite3-${version}";
    version = "2.3.0";

    src = fetchFromGitHub {
      owner = "LuaDist";
      repo = "luasql-sqlite3";
      rev = version;
      sha256 = "05k8zs8nsdmlwja3hdhckwknf7ww5cvbp3sxhk2xd1i3ij6aa10b";
    };

    buildInputs = [ sqlite ];

    patches = [ ../development/lua-modules/luasql.patch ];

    meta = with stdenv.lib; {
      description = "Database connectivity for Lua";
      homepage = "https://github.com/LuaDist/luasql-sqlite3";
      license = licenses.mit;
      maintainers = with maintainers; [ vyp ];
      platforms = platforms.linux;
    };
  };

  lpeg = buildLuaPackage rec {
    name = "lpeg-${version}";
    version = "0.12";

    src = fetchurl {
      url = "http://www.inf.puc-rio.br/~roberto/lpeg/${name}.tar.gz";
      sha256 = "0xlbfw1w7l65a5qhnx5sfw327hkq1zcj8xmg4glfw6fj9ha4b9gg";
    };

    preBuild = ''
      makeFlagsArray=(CC=$CC);
    '';

    buildFlags = platformString;

    installPhase = ''
      mkdir -p $out/lib/lua/${lua.luaversion}
      install -p lpeg.so $out/lib/lua/${lua.luaversion}
      install -p re.lua $out/lib/lua/${lua.luaversion}
    '';

    meta = with stdenv.lib; {
      description = "Parsing Expression Grammars For Lua";
      homepage = "http://www.inf.puc-rio.br/~roberto/lpeg/";
      license = licenses.mit;
      maintainers = with maintainers; [ vyp ];
      platforms = platforms.all;
    };
  };

  cjson = buildLuaPackage rec {
    name = "cjson-${version}";
    version = "2.1.0";

    src = fetchurl {
      url = "http://www.kyne.com.au/~mark/software/download/lua-${name}.tar.gz";
      sha256 = "0y67yqlsivbhshg8ma535llz90r4zag9xqza5jx0q7lkap6nkg2i";
    };

    preBuild = ''
      sed -i "s|/usr/local|$out|" Makefile
    '';

    makeFlags = [ "LUA_VERSION=${lua.luaversion}" ];

    postInstall = ''
      rm -rf $out/share/lua/${lua.luaversion}/cjson/tests
    '';

    installTargets = "install install-extra";

    disabled = isLuaJIT;

    meta = with stdenv.lib; {
      description = "Lua C extension module for JSON support";
      homepage = "https://www.kyne.com.au/~mark/software/lua-cjson.php";
      license = licenses.mit;
      maintainers = with maintainers; [ vyp ];
    };
  };

  lgi = stdenv.mkDerivation rec {
    name = "lgi-${version}";
    version = "0.9.2";

    src = fetchFromGitHub {
      owner = "pavouk";
      repo = "lgi";
      rev = version;
      sha256 = "03rbydnj411xpjvwsyvhwy4plm96481d7jax544mvk7apd8sd5jj";
    };

    nativeBuildInputs = [ pkgconfig ];
    buildInputs = [ glib gobjectIntrospection lua ];

    makeFlags = [ "LUA_VERSION=${lua.luaversion}" ];

    preBuild = ''
      sed -i "s|/usr/local|$out|" lgi/Makefile
    '';

    patches = [
        (fetchpatch {
            name = "lgi-find-cairo-through-typelib.patch";
            url = "https://github.com/psychon/lgi/commit/46a163d9925e7877faf8a4f73996a20d7cf9202a.patch";
            sha256 = "0gfvvbri9kyzhvq3bvdbj2l6mwvlz040dk4mrd5m9gz79f7w109c";
        })
    ];

    meta = with stdenv.lib; {
      description = "GObject-introspection based dynamic Lua binding to GObject based libraries";
      homepage    = https://github.com/pavouk/lgi;
      license     = licenses.mit;
      maintainers = with maintainers; [ lovek323 rasendubi ];
      platforms   = platforms.unix;
    };
  };

  mpack = buildLuaPackage rec {
    name = "mpack-${version}";
    version = "1.0.7";

    src = fetchFromGitHub {
      owner = "libmpack";
      repo = "libmpack-lua";
      rev = version;
      sha256 = "0l4k7qmwaa0zpxrlp27yp4pbbyiz3zgxywkm543q6wkzn6wmq8l8";
    };

    nativeBuildInputs = [ pkgconfig ];
    buildInputs = [ libmpack ];
    dontBuild = true;

    postPatch = stdenv.lib.optionalString stdenv.isDarwin ''
      substituteInPlace Makefile \
        --replace '-shared' '-bundle -undefined dynamic_lookup -all_load'
    '';

    installFlags = [
      "USE_SYSTEM_LUA=yes"
      "USE_SYSTEM_MPACK=yes"
      "MPACK_LUA_VERSION=${lua.version}"
      "LUA_CMOD_INSTALLDIR=$(out)/lib/lua/${lua.luaversion}"
    ];

    meta = with stdenv.lib; {
      description = "Lua bindings for libmpack";
      homepage = "https://github.com/libmpack/libmpack-lua";
      license = licenses.mit;
      maintainers = with maintainers; [ vyp ];
      platforms = with platforms; linux ++ darwin;
    };
  };

  std._debug = buildLuaPackage rec {
    name = "std._debug-${version}";
    version = "1.0";

    src = fetchFromGitHub {
      owner = "lua-stdlib";
      repo = "_debug";
      rev = "v${version}";
      sha256 = "01kfs6k9j9zy4bvk13jx18ssfsmhlciyrni1x32qmxxf4wxyi65n";
    };

    # No Makefile.
    dontBuild = true;

    installPhase = ''
      mkdir -p $out/share/lua/${lua.luaversion}/std
      cp -r lib/std/_debug $out/share/lua/${lua.luaversion}/std/
    '';

    meta = with stdenv.lib; {
      description = "Manage an overall debug state, and associated hint substates.";
      homepage    = https://lua-stdlib.github.io/_debug;
      license     = licenses.mit;
      maintainers = with maintainers; [ lblasc ];
      platforms   = platforms.unix;
    };
  };

  std.normalize = buildLuaPackage rec {
    name = "std.normalize-${version}";
    version = "2.0.1";

    src = fetchFromGitHub {
      owner = "lua-stdlib";
      repo = "normalize";
      rev = "v${version}";
      sha256 = "1yz96r28d2wcgky6by92a21755bf4wzpn65rdv2ps0fxywgw5rda";
    };

    propagatedBuildInputs = [ std._debug ];

    # No Makefile.
    dontBuild = true;

    installPhase = ''
      mkdir -p $out/share/lua/${lua.luaversion}/std
      cp -r lib/std/normalize $out/share/lua/${lua.luaversion}/std/
    '';

    meta = with stdenv.lib; {
      description = "Normalized Lua Functions";
      homepage    = https://lua-stdlib.github.io/normalize;
      license     = licenses.mit;
      maintainers = with maintainers; [ lblasc ];
      platforms   = platforms.unix;
    };
  };

  vicious = stdenv.mkDerivation rec {
    name = "vicious-${version}";
    version = "2.3.1";

    src = fetchFromGitHub {
      owner = "Mic92";
      repo = "vicious";
      rev = "v${version}";
      sha256 = "1yzhjn8rsvjjsfycdc993ms6jy2j5jh7x3r2ax6g02z5n0anvnbx";
    };

    buildInputs = [ lua ];

    installPhase = ''
      mkdir -p $out/lib/lua/${lua.luaversion}/
      cp -r . $out/lib/lua/${lua.luaversion}/vicious/
      printf "package.path = '$out/lib/lua/${lua.luaversion}/?/init.lua;' ..  package.path\nreturn require((...) .. '.init')\n" > $out/lib/lua/${lua.luaversion}/vicious.lua
    '';

    meta = with stdenv.lib; {
      description = "A modular widget library for the awesome window manager";
      homepage    = https://github.com/Mic92/vicious;
      license     = licenses.gpl2;
      maintainers = with maintainers; [ makefu mic92 ];
      platforms   = platforms.linux;
    };
  };

}; in self