Fix cryptography minimum version

.travis.yml

@@ -45,19 +45,19 @@ matrix:
   - python: "pypy"
     env: TOXENV=pypy-cryptographyMaster
 
-  # And older cryptography versions.
+  # And current minimum cryptography version.
   - python: "2.6"
-    env: TOXENV=py26-cryptography1.2
+    env: TOXENV=py26-cryptographyMinimum
   - python: "2.7"
-    env: TOXENV=py27-cryptography1.2
+    env: TOXENV=py27-cryptographyMinimum
   - python: "3.3"
-    env: TOXENV=py33-cryptography1.2
+    env: TOXENV=py33-cryptographyMinimum
   - python: "3.4"
-    env: TOXENV=py34-cryptography1.2
+    env: TOXENV=py34-cryptographyMinimum
   - python: "3.5"
-    env: TOXENV=py35-cryptography1.2
+    env: TOXENV=py35-cryptographyMinimum
   - python: "pypy"
-    env: TOXENV=pypy-cryptography1.2
+    env: TOXENV=pypy-cryptographyMinimum
 
 
   # Make sure we don't break Twisted or urllib3

setup.py

@@ -94,6 +94,7 @@ def find_meta(meta):
         packages=find_packages(where="src"),
         package_dir={"": "src"},
         install_requires=[
+            # Fix cryptographyMinimum in tox.ini when changing this!
             "cryptography>=1.2",
             "six>=1.5.2"
         ],

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = coverage-clean,{pypy,py26,py27,py33,py34,py35}{,-cryptographyMaster,-cryptography1.2},py27-twistedMaster,pypi-readme,check-manifest,flake8,docs,coverage-report
+envlist = coverage-clean,{pypy,py26,py27,py33,py34,py35}{,-cryptographyMaster,-cryptographyMinimum},py27-twistedMaster,pypi-readme,check-manifest,flake8,docs,coverage-report
 
 [testenv]
 whitelist_externals =
@@ -9,7 +9,7 @@ deps =
     coverage
     pytest>=2.8.5
     cryptographyMaster: git+https://github.com/pyca/cryptography.git
-    cryptography1.2: cryptography<1.3
+    cryptographyMinimum: cryptography<1.4
 setenv =
     # Do not allow the executing environment to pollute the test environment
     # with extra packages.