Update app.py

app.py

@@ -1,13 +1,52 @@
+import streamlit as st
+import os
+import pkg_resources
+
+# Using this wacky hack to get around the massively ridicolous managed env loading order
+def is_installed(package_name, version):
+    try:
+        pkg = pkg_resources.get_distribution(package_name)
+        return pkg.version == version
+    except pkg_resources.DistributionNotFound:
+        return False
+
+# shifted from below - this must be the first streamlit call; otherwise: problems
+st.set_page_config(page_title = 'Vulnerability Analysis', 
+                   initial_sidebar_state='expanded', layout="wide") 
+
+@st.cache_resource # cache the function so it's not called every time app.py is triggered
+def install_packages():
+    install_commands = []
+
+    if not is_installed("spaces", "0.12.0"):
+        install_commands.append("pip install spaces==0.17.0")
+    
+    if not is_installed("pydantic", "1.8.2"):
+        install_commands.append("pip install pydantic==1.8.2")
+
+    if not is_installed("typer", "0.4.0"):
+        install_commands.append("pip install typer==0.4.0")
+
+    if install_commands:
+        os.system(" && ".join(install_commands))
+
+# install packages if necessary
+install_packages()
+
+# everything else...
+
+#!!!! NOTE: shift st.set_page_config up script - see notes above
+
+
 import appStore.vulnerability_analysis as vulnerability_analysis
 import appStore.doc_processing as processing
 from utils.uploadAndExample import add_upload
-import streamlit as st
 from utils.vulnerability_classifier import label_dict
 import pandas as pd
 import plotly.express as px
 
-st.set_page_config(page_title = 'Vulnerability Analysis', 
-                   initial_sidebar_state='expanded', layout="wide") 
+#st.set_page_config(page_title = 'Vulnerability Analysis', 
+ #                  initial_sidebar_state='expanded', layout="wide") 
 
 with st.sidebar:
     # upload and example doc
@@ -19,8 +58,8 @@ with st.sidebar:
     add_upload(choice) 
 
 with st.container():
-        st.markdown("<h2 style='text-align: center; color: black;'> Vulnerability Analysis </h2>", unsafe_allow_html=True)
-        st.write(' ')
+    st.markdown("<h2 style='text-align: center; color: black;'> Vulnerability Analysis </h2>", unsafe_allow_html=True)
+    st.write(' ')
 
 with st.expander("ℹ️ - About this app", expanded=False):
     st.write(