Could not install dependency netdisco

Development
1

getting errors on startup, using git checkout:

INFO:homeassistant.util.package:Attempting install of netdisco==0.6.7
Command "C:\Miniconda3\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\clach04\\AppData\\Local\\Temp\\pip-build-60cus39u\\netifaces\\setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n','\n'), __file__, 'exec'))" install --record C:\Users\clach04\AppData\Local\Temp\pip-sy_ft8ke-record\install-record.txt --single-version-externally-managed --compile --home=C:\Users\clach04\AppData\Local\Temp\tmpr5mv8qa7" failed with error code 1 in C:\Users\clach04\AppData\Local\Temp\pip-build-60cus39u\netifaces\ERROR:homeassistant.bootstrap:Not initializing discovery because could not install dependency netdisco==0.6.7

this happens each time which takes a number of seconds to run through and then eventually fail.

Any tips for either debugging this (I have no more error detail, I’ve not attempted a pip3 install) or marking netdisco for ignore? This is pretty minor but I’m brand new to playing with HA so pretty clueless.

2

First try to install netdisco manually with pip, possibly getting some more verbose error logging. You might be missing a build dependency for netifaces, looking at the log. This has been a topic a couple of times in the forum, so you can look at old posts also.

3

Thanks for the quick response, I wanted suggestions before trying the manual install.

So that definitely helped pin point the issue, but did not resolve :slight_smile:

C:\Users\clach04\py\home-assistant>pip install netdisco
Collecting netdisco
  Using cached netdisco-0.6.7-py2.py3-none-any.whl
Collecting netifaces>=0.10.0 (from netdisco)
  Using cached netifaces-0.10.4.tar.gz
Requirement already satisfied (use --upgrade to upgrade): requests>=2.0 in c:\mi
niconda3\lib\site-packages (from netdisco)
Collecting zeroconf==0.17.5 (from netdisco)
  Using cached zeroconf-0.17.5-py2.py3-none-any.whl
Collecting enum-compat (from zeroconf==0.17.5->netdisco)
Collecting six (from zeroconf==0.17.5->netdisco)
  Using cached six-1.10.0-py2.py3-none-any.whl
Building wheels for collected packages: netifaces
  Running setup.py bdist_wheel for netifaces ... error
  Complete output from command C:\Miniconda3\python.exe -u -c "import setuptools
, tokenize;__file__='C:\\Users\\clach04\\AppData\\Local\\Temp\\pip-build-j3xqlk4
2\\netifaces\\setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).r
ead().replace('\r\n', '\n'), __file__, 'exec'))" bdist_wheel -d C:\Users\clach04
\AppData\Local\Temp\tmpbmgncb5wpip-wheel- --python-tag cp35:
  running bdist_wheel
  running build
  running build_ext
  building 'netifaces' extension
  error: Unable to find vcvarsall.bat

  ----------------------------------------
  Failed building wheel for netifaces
  Running setup.py clean for netifaces
Failed to build netifaces
Installing collected packages: netifaces, enum-compat, six, zeroconf, netdisco
  Running setup.py install for netifaces ... error
    Complete output from command C:\Miniconda3\python.exe -u -c "import setuptoo
ls, tokenize;__file__='C:\\Users\\clach04\\AppData\\Local\\Temp\\pip-build-j3xql
k42\\netifaces\\setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__)
.read().replace('\r\n', '\n'), __file__, 'exec'))" install --record C:\Users\cla
ch04\AppData\Local\Temp\pip-ctf51yxf-record\install-record.txt --single-version-
externally-managed --compile:
    running install
    running build
    running build_ext
    building 'netifaces' extension
    error: Unable to find vcvarsall.bat

    ----------------------------------------
Command "C:\Miniconda3\python.exe -u -c "import setuptools, tokenize;__file__='C
:\\Users\\clach04\\AppData\\Local\\Temp\\pip-build-j3xqlk42\\netifaces\\setup.py
';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n',
'\n'), __file__, 'exec'))" install --record C:\Users\clach04\AppData\Local\Temp\
pip-ctf51yxf-record\install-record.txt --single-version-externally-managed --com
pile" failed with error code 1 in C:\Users\clach04\AppData\Local\Temp\pip-build-
j3xqlk42\netifaces\
You are using pip version 8.1.1, however version 8.1.2 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' comm
and.

I’ll do some digging into older posts on netifaces (the upgrade suggestion
from pip sounds hopeful rather than convincing :wink:).

4

So digging into log above along with forum posts and docs. Main issue is Discovery component https://home-assistant.io/components/discovery/ is enabled by default and unless the correct C compiler (and dependencies, e.g. under Linux python-dev) is available pip install will fail.

Options:

  1. For Windows there are pre-built wheels for netifaces, see https://home-assistant.io/components/discovery/ for link.

  2. Disable Discovery, to do this edit the config file and comment out the discovery: line,
    e.g.:

    Discover some devices automatically

    #discovery:

Installing the pre-built binary is certainly easy but I went with #2.