=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Checksum SHA1 OK for matplotlib-3.1.2.tar.gz
=> Checksum RMD160 OK for matplotlib-3.1.2.tar.gz
=> Checksum SHA512 OK for matplotlib-3.1.2.tar.gz
===> Installing dependencies for py36-matplotlib-3.1.2
==========================================================================
The following variables will affect the build process of this package,
py36-matplotlib-3.1.2.  Their current value is shown below:

        * PYTHON_VERSION_DEFAULT = 37

Based on these variables, the following variables have been set:

        * PYPACKAGE = python36

You may want to abort the process now with CTRL-C and change their value
before continuing.  Be sure to run `/usr/bin/make clean' after
the changes.
==========================================================================
=> Tool dependency pkgconf-[0-9]*: found pkgconf-1.6.0
=> Tool dependency distcc-[0-9]*: found distcc-3.3
=> Build dependency x11-links>=1.31: found x11-links-1.31
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency py36-Pillow>=3.4: found py36-Pillow-6.2.1
=> Full dependency py36-cairo-[0-9]*: found py36-cairo-1.18.2
=> Full dependency py36-cycler>=0.10: found py36-cycler-0.10.0nb1
=> Full dependency py36-dateutil>=2.1: found py36-dateutil-2.8.1
=> Full dependency py36-kiwisolver>=1.0.1: found py36-kiwisolver-1.1.0
=> Full dependency py36-pyparsing>=2.2.0: found py36-pyparsing-2.4.5
=> Full dependency py36-setuptools>=0.8: found py36-setuptools-42.0.2
=> Full dependency python36>=3.6.0: found python36-3.6.9
=> Full dependency png>=1.6.0nb1: found png-1.6.37
=> Full dependency py36-numpy>=1.0: found py36-numpy-1.16.4
===> Overriding tools for py36-matplotlib-3.1.2
===> Extracting for py36-matplotlib-3.1.2
===> Patching for py36-matplotlib-3.1.2
===> Creating toolchain wrappers for py36-matplotlib-3.1.2
===> Configuring for py36-matplotlib-3.1.2