TOX: Override install_command separately for x64/x86

Author: effigies

tox.ini

@@ -45,10 +45,14 @@ ARCH =
 description = Pytest with coverage
 labels = test
 install_command =
-  python -I -m pip install \
+  x64: python -I -m pip install -v \
     --only-binary numpy,scipy,h5py,pillow \
     --extra-index-url https://pypi.anaconda.org/scientific-python-nightly-wheels/simple \
     {opts} {packages}
+  x86: python -I -m pip install -v \
+    --only-binary numpy,scipy,h5py,pillow,matplotlib \
+    --extra-index-url https://pypi.anaconda.org/scientific-python-nightly-wheels/simple \
+    {opts} {packages}
 pip_pre =
   pre: true
 pass_env =