get the tahoe branch we depend on into the ci env

.circleci/config.yml

@@ -120,6 +120,9 @@ jobs:
             # dependencies into the environment.
             venv/bin/pip install --no-index --find-links file://${PWD}/wheelhouse .[test]
 
+            # For a while we depend on a pretty fresh Tahoe
+            pip install https://github.com/tahoe-lafs/tahoe-lafs/archive/refs/heads/3842.allocate_buckets-without-lease-renewal.zip
+
       - run:
           name: "Test"
           command: |

.github/workflows/ci.yaml

@@ -40,6 +40,8 @@ jobs:
     - name: "Install ZKAPAuthorizer and dependencies"
       run: |
         python -m pip install -v ./[test]
+        # For a while we depend on a pretty fresh Tahoe
+        pip install https://github.com/tahoe-lafs/tahoe-lafs/archive/refs/heads/3842.allocate_buckets-without-lease-renewal.zip
 
     - name: "Dump Python Environment"
       run: |