nixpkgs/pkgs/development/lua-modules/generic/default.nix
Luka Blaskovic 7b7607382d lua packages: propagate libs with a setupHook
The LUA_PATH and LUA_CPATH variables are needed to load libraries.
This setupHook exports them to the environment.
2018-02-25 21:24:47 +00:00

55 lines
1.5 KiB
Nix

{ lua, writeText }:
{ buildInputs ? [], disabled ? false, ... } @ attrs:
if disabled then
throw "${attrs.name} not supported by interpreter lua-${lua.luaversion}"
else
lua.stdenv.mkDerivation (
{
makeFlags = [
"PREFIX=$(out)"
"LUA_LIBDIR=$(out)/lib/lua/${lua.luaversion}"
"LUA_INC=-I${lua}/include"
];
}
//
attrs
//
{
name = "lua${lua.luaversion}-" + attrs.name;
buildInputs = buildInputs ++ [ lua ];
setupHook = writeText "setup-hook.sh" ''
# check for lua/clua modules and don't add duplicates
addLuaLibPath() {
local package_path="$1/share/lua/${lua.luaversion}"
if [[ ! -d $package_path ]]; then return; fi
if [[ $LUA_PATH = *"$package_path"* ]]; then return; fi
if [[ -z $LUA_PATH ]]; then
export LUA_PATH="$package_path/?.lua"
else
export LUA_PATH="$LUA_PATH;$package_path/?.lua"
fi
}
addLuaLibCPath() {
local package_cpath="$1/lib/lua/${lua.luaversion}"
if [[ ! -d $package_cpath ]]; then return; fi
if [[ $LUA_CPATH = *"$package_cpath"* ]]; then return; fi
if [[ -z $LUA_CPATH ]]; then
export LUA_CPATH="$package_cpath/?.so"
else
export LUA_CPATH="$LUA_CPATH;$package_cpath/?.so"
fi
}
addEnvHooks "$hostOffset" addLuaLibPath
addEnvHooks "$hostOffset" addLuaLibCPath
'';
}
)