1 files changed, 15 insertions, 4 deletions
diff --git a/tox.ini b/tox.ini
index 04d2f721bf..920211bf50 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,7 +3,6 @@ envlist = packaging, py27, py36, pep8, check_isort
 
 [base]
 deps =
-    coverage
     Twisted>=17.1
     mock
     python-subunit
@@ -12,6 +11,20 @@ deps =
     # needed by some of the tests
     lxml
 
+    # cyptography 2.2 requires setuptools >= 18.5
+    #
+    # older versions of virtualenv (?) give us a virtualenv with the same
+    # version of setuptools as is installed on the system python (and tox runs
+    # virtualenv under python3, so we get the version of setuptools that is
+    # installed on that).
+    #
+    # anyway, make sure that we have a recent enough setuptools.
+    setuptools>=18.5
+
+    # we also need a semi-recent version of pip, because old ones fail to
+    # install the "enum34" dependency of cryptography.
+    pip>=10
+
 setenv =
     PYTHONDONTWRITEBYTECODE = no_byte_code
 
@@ -26,9 +39,7 @@ passenv = *
 
 commands =
     /usr/bin/find "{toxinidir}" -name '*.pyc' -delete
-    coverage run {env:COVERAGE_OPTS:} --source="{toxinidir}/synapse" \
-        "{envbindir}/trial" {env:TRIAL_FLAGS:} {posargs:tests} {env:TOXSUFFIX:}
-    {env:DUMP_COVERAGE_COMMAND:coverage report -m}
+    "{envbindir}/trial" {env:TRIAL_FLAGS:} {posargs:tests} {env:TOXSUFFIX:}
 
 [testenv:py27]