FTBFS on artful (can't cd to python in override_dh_install)

Also:

x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I/usr/include/python2.7 -c ovs/_json.c -o build/temp.linux-x86_64-2.7/ovs/_json.o
ovs/_json.c:1:20: fatal error: Python.h: No such file or directory
 #include "Python.h"

Ok, the gcc error seems to be "normal"?
Maybe it just went undetected so far.

The good build has this as well:
x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I/usr/include/python2.7 -c ovs/_json.c -o build/temp.linux-x86_64-2.7/ovs/_json.o
ovs/_json.c:1:20: fatal error: Python.h: No such file or directory
 #include "Python.h"
x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -g -O2 -fdebug-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I/usr/include/python3.5m -c ovs/_json.c -o build/temp.linux-x86_64-3.5/ovs/_json.o
ovs/_json.c:1:20: fatal error: Python.h: No such file or directory
 #include "Python.h"

Once per python version, the openvswitch build automatically does:
WARNING: The C extension could not be compiled, speedups are not enabled.
Failure information, if any, is above.
Retrying the build without the C extension.

Need to discuss if that is ok or another issue in itself, but that means the FTBFS atm is only about:
GOOD
running install_scripts
install -D _dpdk/vswitchd/ovs-vswitchd \
        /<<PKGBUILDDIR>>/debian/openvswitch-switch-dpdk/usr/lib/openvswitch-switch-dpdk/ovs-vswitchd-dpdk

BAD
running install_scripts
/bin/sh: 2: cd: can't cd to python
debian/rules:84: recipe for target 'override_dh_install' failed

To ensure debugging isn't too easy a local SBUILD just worked as-is, while reliably failing on Launchpad.

Local repro worked, it seems it is due to two python's being in proposed at once.
The first cd works, but the second fails ... trying a fix now.

Confirmed, pyversions provides two values for
PYTHON3S:=$(shell py3versions -vr)

$ py3versions -vr
3.6 3.5

Fix is working, but I need to fix up more around DPDK and Arm until I push mine together with the others.

Please let me know if that is any more urgent for you.

FYI - still waiting on upstream fix in regard to arm support to be accepted to be "one" upload for the changes.

This bug was fixed in the package openvswitch - 2.7.0-0ubuntu2

---------------
openvswitch (2.7.0-0ubuntu2) artful; urgency=medium

  * d/control, d/rules: Enable DPDK support on Arm (LP: #1691659)
  * d/rules: Fix FTBFS if multiple python interpreters are
    installed (LP: #1691658)
  * d/p/ovs-dev-v3-netdev-dpdk-round-up-mbuf_size-to-cache_line_size.patch:
    round up mbuf_size to cache_line_size to fix some DPDK PMDs e.g. vNIC
    thunderx PMD (LP: #1694221)

 -- Christian Ehrhardt <email address hidden> Wed, 17 May 2017 15:45:13 +0200