py-virtualenv doesn't build for python27 if py27-pathlib2 hasn't been built befor - due to a broken dependency.
===> py27-virtualenv-16.7.5 depends on package: py27-pathlib2>0 - not found
===> py27-virtualenv-16.7.5 depends on package: /packages/All/py27-pathlib2-2.3.4.txz - not found
===> USE_PACKAGE_DEPENDS_ONLY set - not building missing dependency from source
*** Error code 1
The fix in ports r512469 isn't correct according to: https://www.freebsd.org/doc/en_US.ISO8859-1/books/porters-handbook/flavors-using.html
The attached fix fixes this.
Created attachment 208222 [details]
Fix py-virtualenv build for python27
Add patch to fix py-virtualenv build for python27
The proposed patch is wrong.
This may be a problem due to the tool you are using.