how to install kallithea from source

[Thomas De Schampheleire]

(explicitly address Uwe)

On Thu, Aug 13, 2020, 18:16 Thomas De Schampheleire <
patrickdepinguin at gmail.com> wrote:

> Hi Uwe,
>
> On Thu, Aug 13, 2020, 17:50 Uwe Brauer <oub at mat.ucm.es> wrote:
>
>>
>> Hi
>>
>> Since I cannot install kallitea via pip (my python version in Ubuntu
>> 16.04 is too old) I thought to give the installation from source a try.
>>
>>
>> The documentation in
>> https://kallithea.readthedocs.io/en/stable/installation.html
>>
>> Reads
>>
>> ,----
>> | hg clone https://kallithea-scm.org/repos/kallithea -u stable
>> | cd kallithea
>> | python3 -m venv ../kallithea-venv
>> | . ../kallithea-venv/bin/activate
>> | pip install --upgrade pip setuptools
>> | pip install --upgrade -e .
>> | python3 setup.py compile_catalog   # for translation of the UI
>> `----
>>
>> I don't understand the lines
>>
>>  python3 -m venv ../kallithea-venv
>>  . ../kallithea-venv/bin/activate
>>
>> Is this supposed to be one line?
>> What does the . At the beginning of the second line supposed to be?
>>
>
> The '.' is an alias to the 'source' shell command. It reads and executes
> the file provided as arguments.
> See section "Shell Builtin Commands" at:
> https://linux.die.net/man/1/bash
>
> The 'activate' script is provided by virtualenv/venv and sets certain
> environment variables, like PATH to make sure the right python executable
> and libraries are used.
> This would not be possible of the script were directly executed, as
> opposed to source'ing it, because environment variables set by a program or
> script do not impact its parent (shell) process, only the program/script
> itself and its children.
>
> Note that virtualenv/venv will use the python3 found in PATH, so if you
> only have python 3.5 you will still not be able to install kallithea.
> If you can install python 3 6 or later in another way, you can make sure
> to call that python executable instead of 'python3', e.g
>
> python3.6 -m venv ../kallithea-venv
>
> There exist ways to install a specific python version as a normal user,
> e.g. with pyenv (https://github.com/pyenv/pyenv) or other similar tools.
> You could also install a python version from source manually.
>
> Best regards,
> Thomas
>
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