pin it for pip/distutils users

.github/workflows/ci.yaml

@@ -45,7 +45,7 @@ jobs:
 
     - name: "Install Tahoe-LAFS master@HEAD"
       run: |
-        python -m pip install git+https://github.com/tahoe-lafs/tahoe-lafs@master#egg=tahoe-lafs
+        python -m pip install tahoe-lafs==1.14.0
 
     - name: "Install Test Dependencies"
       run: |

setup.cfg

@@ -38,7 +38,7 @@ install_requires =
     python-challenge-bypass-ristretto
     # Inherit our Twisted dependency from tahoe-lafs so we don't accidentally
     # get the extras wrong here and break stuff.
-    tahoe-lafs
+    tahoe-lafs==1.14.0
     treq
 
 [versioneer]