unix: Initialize sys.path from MICROPYPATH environment variable.
If it's not available, "~/.micropython/lib:/usr/lib/micropython" is used
as a fallback.
diff --git a/unix/main.c b/unix/main.c
index cc94216..c9d7b4f 100644
--- a/unix/main.c
+++ b/unix/main.c
@@ -233,7 +233,41 @@
qstr_init();
rt_init();
+ char *home = getenv("HOME");
+ char *path = getenv("MICROPYPATH");
+ if (path == NULL) {
+ path = "~/.micropython/lib:/usr/lib/micropython";
+ }
+ uint path_num = 0;
+ for (char *p = path; p != NULL; p = strchr(p, ':')) {
+ path_num++;
+ if (p != NULL) {
+ p++;
+ }
+ }
+ sys_path = mp_obj_new_list(path_num, NULL);
+ mp_obj_t *items;
+ mp_obj_list_get(sys_path, &path_num, &items);
+ char *p = path;
+ for (int i = 0; i < path_num; i++) {
+ char *p1 = strchr(p, ':');
+ if (p1 == NULL) {
+ p1 = p + strlen(p);
+ }
+ if (p[0] == '~' && p[1] == '/' && home != NULL) {
+ // Expand standalone ~ to $HOME
+ CHECKBUF(buf, PATH_MAX);
+ CHECKBUF_APPEND(buf, home, strlen(home));
+ CHECKBUF_APPEND(buf, p + 1, p1 - p - 1);
+ items[i] = MP_OBJ_NEW_QSTR(qstr_from_strn(buf, CHECKBUF_LEN(buf)));
+ } else {
+ items[i] = MP_OBJ_NEW_QSTR(qstr_from_strn(p, p1 - p));
+ }
+ p = p1 + 1;
+ }
+
mp_obj_t m_sys = mp_obj_new_module(MP_QSTR_sys);
+ rt_store_attr(m_sys, MP_QSTR_path, sys_path);
mp_obj_t py_argv = mp_obj_new_list(0, NULL);
rt_store_attr(m_sys, MP_QSTR_argv, py_argv);