Re: Trisquel-users Digest, Vol 126, Issue 34

Hi Trisquel Users!

Today I hit a problem when trying to install the package python3-venv.
It seems to depend upon python3.5-venv and that depends on
python-pip-whl, which does not have any installation candidate on
Trisquel. Here are the outputs of commands I tried:

~~~~~~~~
$ sudo apt-get install python3-venv

Reading package lists... DoneBuilding dependency tree
Reading state information... Done

Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming.The following information may help to resolve the situation:

The following packages have unmet dependencies:

python3-venv : Depends: python3.5-venv (>= 3.5.1-2~) but it is not going to be installed

E: Unable to correct problems, you have held broken packages.

$ dpkg --get-selections | grep hold

(nothing)

$ sudo aptitude install python3.5-venv

The following NEW packages will be installed: python3.5-venv{b}
0 packages upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 6.020 B of archives. After unpacking 28,7 kB will be used.

The following packages have unmet dependencies: python3.5-venv :

Depends: python-pip-whl (>= 8.1.0-2) which is a virtual package and is not provided by any available package. The following actions will resolve these dependencies:

Keep the following packages at their current version:

1)     python3.5-venv [Not Installed]

Accept this solution? [Y/n/q/?] Y

No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B of archives. After unpacking 0 B will be used.
~~~~~~~~

Can I still get Python Venv for Python 3 working somehow?

I see, that in Ubuntu the package does exist:
https://packages.ubuntu.com/xenial/python-pip-whl

Regards,

Zelphir

On 12/23/19 12:00 PM, name at domain wrote:
> Message: 1
> Date: Sun, 22 Dec 2019 18:01:25 +0100 (CET)
> From: name at domain
> To: name at domain
> Subject: Re: [Trisquel-users] Cannot install python-pip, python-typing
> Message-ID:
> <name at domain>
>
> Content-Type: text/plain; charset=UTF-8; format=flowed; delsp=yes
>
> When programming with python in general, you might want to have multiple
> versions of python available - and even if not required by your developing
> work, you still might want to separate the system python from the python
> version you use for programming.
>
> An extremely handy tool for this is pyenv (https://github.com/pyenv/pyenv).
> See https://realpython.com/intro-to-pyenv/ for a good introduction on how to
> use pyenv.
>
> Why am I saying all this? Because once you have pyenv installed, you can
> install a separate python version on your computer in which pip will be
> available.
>
> To keep your computer free from proprietary software, you will of course have
> to check manually all licences of the packages you install through pip.