Add back Matplotlib as a required dependency

Author: astrofrog

.travis.yml

@@ -37,8 +37,6 @@ matrix:
       env: TOXENV=py37-test-mpl30
     - python: 3.8
       env: TOXENV=py38-test-mpl31
-    - python: 3.8
-      env: TOXENV=py38-test-minimal
     - python: 3.8
       env: TOXENV=codestyle
 

setup.cfg

@@ -29,6 +29,7 @@ packages = find:
 # installing Matplotlib unecessarily.
 install_requires =
     pytest
+    matplotlib
 
 [options.entry_points]
 pytest11 =
@@ -37,7 +38,6 @@ pytest11 =
 [options.extras_require]
 test =
     pytest-cov
-    matplotlib
 
 [tool:pytest]
-testpaths = "tests"
+testpaths = "tests"

tox.ini

@@ -23,14 +23,12 @@ deps =
     mpl31: matplotlib==3.1.*
     mpldev: git+https://github.com/matplotlib/matplotlib.git#egg=matplotlib
 extras =
-    !minimal: test
+    test
 commands =
     pip freeze
     # Make sure the tests pass with and without --mpl
-    !minimal: pytest '{toxinidir}' {posargs}
-    !minimal: pytest '{toxinidir}' --mpl --cov pytest_mpl {posargs}
-    # Make sure that the plugin won't crash pytest if Matplotlib isn't installed
-    minimal: python -c 'import pytest_mpl.plugin'
+    pytest '{toxinidir}' {posargs}
+    pytest '{toxinidir}' --mpl --cov pytest_mpl {posargs}
 
 [testenv:codestyle]
 skip_install = true