tox: Assume that Python 3 is the default interpreter

This change affects existing development environments which will have
to be recreated with the Python 3 interpreter as the default.

Signed-off-by: Vasilis Tsiligiannis <acinonyx@openwrt.gr>

.gitlab-ci.yml

@@ -21,7 +21,7 @@ static:
   before_script:
     - pip install tox~=3.8.0
   script:
-    - tox -e "py3-flake8,isort,yapf,py3-pylint"
+    - tox -e "flake8,isort,yapf,pylint"
 docs:
   stage: build
   image: python:3
@@ -42,7 +42,7 @@ build:
     - pip install tox~=3.8.0
   script:
     - rm -rf dist
-    - tox -e py3-build
+    - tox -e build
   artifacts:
     expire_in: 1 week
     when: always
@@ -54,7 +54,7 @@ test:
   before_script:
     - pip install tox~=3.8.0
   script:
-    - tox -e deps,py3-pytest
+    - tox -e deps,pytest
 docker:
   stage: deploy
   image: docker:18.09

tox.ini

@@ -1,7 +1,7 @@
 [tox]
-envlist = py3-flake8,isort,yapf,py3-{pylint,build}
+envlist = flake8,isort,yapf,pylint,build
 
-[testenv:py3-flake8]
+[testenv:flake8]
 deps =
     flake8==3.7.7
 skip_install = True
@@ -29,12 +29,12 @@ deps =
 skip_install = True
 commands = yapf -i -r .
 
-[testenv:py3-build]
+[testenv:build]
 skip_install = True
 commands =
     python setup.py sdist bdist_wheel
 
-[testenv:py3-pylint]
+[testenv:pylint]
 deps =
     pylint==2.3.1
     pylint-django==2.0.9
@@ -51,7 +51,7 @@ deps =
 extras = dev
 commands = pip check
 
-[testenv:py3-pytest]
+[testenv:pytest]
 install_command = python -m pip install --no-deps {opts} {packages}
 deps =
     -rrequirements-dev.txt