Add libssl as host installation requirement

[mzakharocsc]

Versions

• Python: 3.6.9
• OS: Ubuntu 18.04

Description

Need to install libssl-dev on host prior to building hostpython in order for hostpython to support import ssl and allow pip to download packages from pypi.org that use https://

Host setup requirements for pythonforandroid and buildozer need to be updated to reflect this.

Build error

urllib3.exceptions.SSLError: Can't connect to HTTPS URL because the SSL module is not available.

[AndreMiras]

Yes you're right. Would you mind to make a PR to solve this?
Options I can think of are (from easiest to hardest):

1. document it in the trouble shooting guide or/and in the hostpython3 recipe docstring
2. add warning if libssl dependency is not found during the hostpython building phase
3. ship hostopenssl recipe

Maybe you have other options in mind

[mzakharocsc]

Yes you're right. Would you mind to make a PR to solve this?
Options I can think of are (from easiest to hardest):

1. document it in the trouble shooting guide or/and in the hostpython3 recipe docstring
2. add warning if libssl dependency is not found during the hostpython building phase
3. ship hostopenssl recipe

Maybe you have other options in mind

Hey -> thanks -> I actually would have preferred option number 3, however, coming from bitbake/poky world, it seems like a maintenance burden to add more files to support building host/vs target recipes. Why is it not just one single openssl recipe file that can be retargeted depending on what you want? This could be fascilitated with separate depends and hostdepends array that would allow build system to know what are build and what are runtime dependencies.

Sorry for the rant, but as a result, I would probably think that option number 1 would be probably less to maintain -> hence would updating the following pages be enough?

• https://github.com/kivy/buildozer/blob/master/docs/source/installation.rst

• https://github.com/kivy/python-for-android/blob/master/doc/source/quickstart.rst

[AndreMiras]

Yes we can complain as much as we want specially if we provide PR to improve things up.
So yes PRs for any options are welcome.
If you want to go for 1, then I would say https://github.com/kivy/python-for-android/blob/2b33eae/doc/source/troubleshooting.rst

[Sahil-pixel]

I have also same problem ..

[SivaramNalliboyana]

How can I install libssl

[SivaramNalliboyana]

Like should I write libssl-dev in my requirments or should I install it separately

[RobertFlatt]

Installed ssl
sudo apt install libssl-dev
But get this error:

RAN: /usr/bin/bash -c 'venv/bin/pip install Cython'

STDOUT:
WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Collecting Cython

But a manual import of ssl works:

>python3
Python 3.8.2 (default, Apr 27 2020, 15:53:34)
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
 >>> import ssl
 >>>

any ideas?

[RobertFlatt]

Got it.
I have to reinstall p4a after installing libssl-dev