Move flake8 plugins to development dependencies

This makes it easier for developers to run flake8 in their development
virtualenv.

README.md

@@ -102,7 +102,7 @@ To upgrade such installations, just run:
 If you want to run dosage directly from the source code, you should install
 it in "[editable]" mode, preferable in a [virtual environment]:
 
-    pip install -e .[css,bash]
+    pip install -e .[css,bash,dev]
 
 You can invoke Dosage directly from the source code as `./dosage`, but this
 mode of operation is discouraged, since dependencies might be missing.

setup.cfg

@@ -52,10 +52,16 @@ bash =
     argcomplete
 css =
     cssselect
-test =
+dev =
     pytest-cov
     pytest-xdist
     responses
+    flake8
+    flake8-2020
+    flake8-coding
+    flake8-future-import
+    flake8-pytest
+    flake8-pytest-style
 
 [bdist_wheel]
 universal = 1

tests/modules/Jenkinsfile

@@ -19,7 +19,7 @@ def runTests() {
         checkout scm
     }
     stage ('Install lib') {
-        sh "pip install --user -e .[css,test]"
+        sh "pip install --user -e .[css,dev]"
     }
     stage ('Run tests') {
         sh "TESTALL=1 py.test -v --cov=dosagelib --cov-report xml --tb=short -n10 --junitxml=junit.xml tests/modules/check_comics.py || true"

tox.ini

@@ -20,19 +20,12 @@ deps =
 # Also install extra dependencies for tests.
 extras =
     css
-    test
+    dev
 
 [testenv:flake8]
 commands =
     - {envbindir}/flake8 --format=pylint \
           --tee --output-file={toxworkdir}/flake8.log
-deps =
-    flake8
-    flake8-2020
-    flake8-coding
-    flake8-future-import
-    flake8-pytest
-    flake8-pytest-style
 
 [flake8]
 # we aim for 79, but this suppresses warnings for now...