save for later button

utils.py

@@ -1,3 +1,4 @@
+import os
 from textwrap import dedent
 
 import streamlit as st
@@ -31,8 +32,10 @@ def project_sidebar():
     st.session_state["project_name"] = project_name
     st.session_state["hub_username"] = hub_username
     st.session_state["hub_token"] = st.sidebar.text_input(
-        "Hub Token", type="password", value=None
+        "Hub Token", type="password", value=os.environ.get("HF_TOKEN")
     )
+    if st.checkbox("Save Hub Token") and st.session_state["hub_token"] is not None:
+        os.environ["HF_TOKEN"] = st.session_state["hub_token"]
     st.sidebar.link_button(
         "🤗 Get your Hub Token", "https://huggingface.co/settings/tokens"
     )