Maybe this solves cryptography <-> rustc

Dockerfile

@@ -26,7 +26,8 @@ WORKDIR /install
 
 COPY requirements.txt /requirements.txt
 
-RUN pip install --target=/dependencies -r /requirements.txt
+# --extra-index-url https://www.piwheels.org/simple  is for cryptography module to be prebuilt (or rustc etc needs to be installed)
+RUN pip install --extra-index-url https://www.piwheels.org/simple  --target=/dependencies -r /requirements.txt
 
 # Playwright is an alternative to Selenium
 # Excluded this package from requirements.txt to prevent arm/v6 and arm/v7 builds from failing

requirements.txt

@@ -41,10 +41,8 @@ apprise~=1.8.0
 # use v1.x due to https://github.com/eclipse/paho.mqtt.python/issues/814
 paho-mqtt>=1.6.1,<2.0.0
 
-# This mainly affects some ARM builds, which unlike the other builds ignores "ARG CRYPTOGRAPHY_DONT_BUILD_RUST=1"
-# so without this pinning, the newer versions on ARM will forcefully try to build rust, which results in "rust compiler not found"
-# (introduced once apprise became a dep)
-cryptography~=3.4
+# Requires extra wheel for rPi
+cryptography~=42.0.8
 
 # Used for CSS filtering
 beautifulsoup4