#include <stdlib.h>#include <stdio.h>#include <string.h>#include "lil/lil.h"#include "patchwerk/patchwerk.h"#include "core.h"#include "sklil.h"#include "env.h" static lil_value_t env(lil_t lil, size_t argc, lil_value_t *argv){    sk_core *core;    int rc;    int i;    core = lil_get_data(lil);     SKLIL_ARITY_CHECK(lil, "env", argc, 4);     for (i = 0; i < 4; i ++) {        rc = sklil_param(core, argv[i]);        SKLIL_PARAM_CHECK(lil, rc, "env");    }     rc = sk_node_env(core);    SKLIL_ERROR_CHECK(lil, rc, "env didn't work out.");    return NULL;} void sklil_load_env(lil_t lil){    lil_register(lil, "env", env);}