pythonnative version mismatch?

[Kun Yi]

Hello folks,

I searched through the mailing list but haven't seen anyone brought up.
Here's a weird bug I found on my setup: pythonnative seems to be using
python3.4.3 whereas the recipe specified 2.7.

Before diving into the layers of bitbake recipes to root cause what caused
this, I want to post on the mailing list to see if it is reproducible on
other setups, and if people have ideas why this went wrong (environment
variable accidentally being overwritten?)

*What I tested:*
I found the code in phosphor-settings-manager, which inherits pythonnative,
seems to be working per python 3, so added the following line into a native
python function:

python do_check_version () {
  import sys
  bb.warn(sys.version)
}
addtask check_version after do_configure before do_compile

WARNING: phosphor-settings-manager-1.0-r1 do_check_version: 3.4.3 (default,
Nov 17 2016, 01:08:31)

This is with openbmc git tip, building MACHINE=zaius

*What the recipe should be using is seemingly 2.7:*
$ cat ../import-layers/yocto-poky/meta/classes/pythonnative.bbclass

inherit python-dir
[...]

$ cat ../import-layers/yocto-poky/meta/classes/python-dir.bbclass
PYTHON_BASEVERSION = "2.7"
PYTHON_ABI = ""
PYTHON_DIR = "python${PYTHON_BASEVERSION}"
PYTHON_PN = "python"
PYTHON_SITEPACKAGES_DIR = "${libdir}/${PYTHON_DIR}/site-packages"

*Why this is bad:*
well, python2.7 and python3 have a ton of differences. A bug I discovered
is due to usage of filter(), which returns different objects between
Python2/3.

-- 
Regards,
Kun
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