=> Bootstrap dependency digest>=20010302: found digest-20180917
=> Checksum SHA1 OK for greenlet-0.4.15.tar.gz
=> Checksum RMD160 OK for greenlet-0.4.15.tar.gz
=> Checksum SHA512 OK for greenlet-0.4.15.tar.gz
===> Installing dependencies for py37-greenlet-0.4.15
==========================================================================
The following variables will affect the build process of this package,
py37-greenlet-0.4.15.  Their current value is shown below:

        * PYTHON_VERSION_DEFAULT = 27

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

        * PYPACKAGE = python37

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 checkperms>=1.1: found checkperms-1.12
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency python37>=3.7.0: found python37-3.7.1
===> Overriding tools for py37-greenlet-0.4.15
===> Extracting for py37-greenlet-0.4.15
===> Patching for py37-greenlet-0.4.15
=> Applying pkgsrc patches for py37-greenlet-0.4.15
=> Verifying /usr/pkgsrc/devel/py-greenlet/patches/patch-slp__platformselect.h
=> Applying pkgsrc patch /usr/pkgsrc/devel/py-greenlet/patches/patch-slp__platformselect.h
Hmm...  Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|$NetBSD: patch-slp__platformselect.h,v 1.1 2017/07/11 17:31:16 he Exp $
|
|--- slp_platformselect.h.orig	2016-12-10 23:52:06.000000000 +0000
|+++ slp_platformselect.h
--------------------------
Patching file slp_platformselect.h using Plan A...
Hunk #1 succeeded at 20.
done
===> Creating toolchain wrappers for py37-greenlet-0.4.15
===> Configuring for py37-greenlet-0.4.15
=> Checking for portability problems in extracted files