maybe wheel will install first if I change it to -e

snap/snapcraft.yaml

@@ -57,10 +57,10 @@ parts:
     constraints: [$SNAPCRAFT_PART_SRC/snap-constraints.txt]
     python-packages:
       - wheel
-      - ./acme
-      - ./certbot
-      - ./certbot-apache
-      - ./certbot-nginx
+      - -e acme
+      - -e certbot
+      - -e certbot-apache
+      - -e certbot-nginx
     stage:
       - -usr/lib/python3.8/sitecustomize.py # maybe unnecessary
       # Prefer cffi
@@ -69,7 +69,7 @@ parts:
       - libaugeas0
       - python3-venv
     # To build cryptography and cffi if needed
-    build-packages: [libffi-dev, libssl-dev, git, python3-wheel]
+    build-packages: [libffi-dev, libssl-dev, git]
     override-pull: |
         snapcraftctl pull
         snapcraftctl set-version `cd $SNAPCRAFT_PART_SRC/certbot && git describe|sed s/^v//`