Hi,
I’m having some trouble installing the above or rather HA is 
I’m on an RPI 3 running Stretch on AIO install of HA. HA can’t install gattlib and when I tried to install it manually it fails with some kind of internal compiler error. Has any got any ideas why it wouldn’t install?
TIA for any clues 
Edit : I’m running HA 56.2 tho’ this problem has been going on for a while now
Edit: In the VE running command python show I’m running Python 3.5.3
There’s many possible issues, but if you don’t tell us the actual error it’s hard for anybody to help 
IRRC when I last tried to diagnose the problem all the information it gave was that there had been an internal compiler error, however I will run it again and see if I can get anything more from it
Collecting gattlib==0.20150805
Using cached gattlib-0.20150805.tar.gz
Building wheels for collected packages: gattlib
Running setup.py bdist_wheel for gattlib ... error
Complete output from command /srv/homeassistant/homeassistant_venv/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-yuwcluvo/gattlib/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d /tmp/tmpt3pe8r1fpip-wheel- --python-tag cp35:
running bdist_wheel
running build
running build_ext
building 'gattlib' extension
creating build
creating build/temp.linux-armv7l-3.5
creating build/temp.linux-armv7l-3.5/src
creating build/temp.linux-armv7l-3.5/src/bluez
creating build/temp.linux-armv7l-3.5/src/bluez/lib
creating build/temp.linux-armv7l-3.5/src/bluez/attrib
creating build/temp.linux-armv7l-3.5/src/bluez/src
creating build/temp.linux-armv7l-3.5/src/bluez/src/shared
creating build/temp.linux-armv7l-3.5/src/bluez/btio
arm-linux-gnueabihf-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -g -fdebug-prefix-map=/build/python3.5-RUbMX3/python3.5-3.5.3=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -DVERSION="5.25" -I/usr/include/glib-2.0 -I/usr/lib/arm-linux-gnueabihf/glib-2.0/include -Isrc/bluez -I/usr/include/python3.5m -I/srv/homeassistant/homeassistant_venv/include/python3.5m -c src/gattservices.cpp -o build/temp.linux-armv7l-3.5/src/gattservices.o
cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
arm-linux-gnueabihf-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -g -fdebug-prefix-map=/build/python3.5-RUbMX3/python3.5-3.5.3=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -DVERSION="5.25" -I/usr/include/glib-2.0 -I/usr/lib/arm-linux-gnueabihf/glib-2.0/include -Isrc/bluez -I/usr/include/python3.5m -I/srv/homeassistant/homeassistant_venv/include/python3.5m -c src/beacon.cpp -o build/temp.linux-armv7l-3.5/src/beacon.o
cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
arm-linux-gnueabihf-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -g -fdebug-prefix-map=/build/python3.5-RUbMX3/python3.5-3.5.3=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -DVERSION="5.25" -I/usr/include/glib-2.0 -I/usr/lib/arm-linux-gnueabihf/glib-2.0/include -Isrc/bluez -I/usr/include/python3.5m -I/srv/homeassistant/homeassistant_venv/include/python3.5m -c src/bindings.cpp -o build/temp.linux-armv7l-3.5/src/bindings.o
cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++
arm-linux-gnueabihf-gcc: internal compiler error: Killed (program cc1plus)
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-6/README.Bugs> for instructions.
error: command 'arm-linux-gnueabihf-gcc' failed with exit status 4
----------------------------------------
Failed building wheel for gattlibOk, not seen that before.
Your install is ok? No issues with the power supply (sudo vcgencmd get_throttled shows 0x0)? Nothing else running that would be using up the RAM?
Install seems OK, HA uses 100 of one core 99% of the time.
sudo vcgencmd get_throttled shows…
throttled=0x50005
I will give another PSU a try
Snapshot of ‘top’
cpu ram%
11161 homeass+ 20 0 422116 87068 10244 S 98.7 9.2 295:23.79 hass
4264 root -81 0 118788 8868 6552 S 7.2 0.9 1:37.82 pilight-daemon
3905 root 20 0 0 0 0 S 4.9 0.0 0:43.54 kworker/0:0
6354 pi 20 0 8240 3360 2760 R 2.0 0.4 0:00.62 top
2101 root 20 0 127148 28736 9560 S 0.7 3.0 146:48.75 node
7 root 20 0 0 0 0 S 0.3 0.0 12:46.09 rcu_sched
79 root 20 0 0 0 0 S 0.3 0.0 25:43.08 mmcqd/0
773 influxdb 20 0 1082320 189884 7876 S 0.3 20.0 302:24.62 influxd
2259 pi 20 0 11584 2040 1788 S 0.3 0.2 0:47.78 sshd
2381 root 20 0 0 0 0 S 0.3 0.0 0:01.29 kworker/1:1
3416 root 20 0 0 0 0 S 0.3 0.0 0:02.03 kworker/u8:1
1 root 20 0 28200 4232 3252 S 0.0 0.4 1:32.91 systemd
influx seems to be the only user of a significant amount of ram.
You’ve certainly got a power issues there 
With another PSU I get 0x50000 so better I guess but not zero
The bad news is, it’s bit 16 (the 1 of that 5) that indicates an under power situation. At least it’s now not actively reporting it.
Check the micro USB cable, it could be part of the problem.