Overview

In a shared development environment, if you put pyenv for each user, the capacity will be great, so A story to put one in common so that it can be reused by general users.

The point

Create a pyenv group
Put one pyenv in the system
Own the pyenv group
group Give read permission
Make general users belong to pyenv group

The method that docker also adopts.

environment

You can use docker, but since it's a big deal, I'll use vagrant.

$ vagrant -v
Vagrant 2.2.3

`Vagrantfile`


Vagrant.configure("2") do |config|
  config.vm.box = "centos/7"
end

Host side

Start up

$ vagrant up

Enter vm

$ vagrant ssh
Last login: Wed Feb  5 03:53:55 2020 from 10.0.2.2
[vagrant@localhost ~]$

After that, run in vm

Be root

[vagrant@localhost ~]$ sudo su -
Last login:Wed February 5 03:50:50 UTC 2020 on pts/1
[root@localhost ~]#

Create pyenv environment

Prepare sh for setting environment variables

`pyenv.sh`


if [ -e /opt/pyenv ]; then
    export PYENV_ROOT=/opt/pyenv
    export PATH="${PYENV_ROOT}/bin:$PATH"
    eval "$(pyenv init -)"
fi

Install to / opt / pyenv.

$ yum install -y \
    @development zlib-devel bzip2 bzip2-devel readline-devel sqlite \
    sqlite-devel openssl-devel xz xz-devel libffi-devel findutils

$ curl https://pyenv.run | PYENV_ROOT=/opt/pyenv bash

$ groupadd pyenv \
    && chown -R :pyenv /opt/pyenv/ \
    && chmod g+r -R /opt/pyenv/

$ cp /vagrant/pyenv.sh /etc/profile.d/

Verification

Re-enter the vm

[vagrant@localhost ~]$ pyenv -v
pyenv 1.2.16

[vagrant@localhost ~]$ pyenv versions
* system (set by /opt/pyenv/version)

Insert python by version specification

Since pyenv install can only be done by root,

[root@localhost ~]# pyenv install 3.8.1
(..snip..)

[root@localhost ~]# pyenv install 3.7.6
(..snip..)

It has entered.

[root@localhost ~]# pyenv  versions
* system (set by /opt/pyenv/version)
  3.7.6
  3.8.1

Also confirmed by general users. I don't have write permission, so I get pyenv: cannot rehash: / opt / pyenv / shims isn't writable, but don't worry.

[root@localhost ~]# su - vagrant
Last login: Wed Feb  5 04:01:04 UTC 2020 from 10.0.2.2 on pts/0
pyenv: cannot rehash: /opt/pyenv/shims isn't writable
[vagrant@localhost ~]$ pyenv versions
* system (set by /opt/pyenv/version)
  3.7.6
  3.8.1

This is the preparation.

Operation check

Run in vm.

Add general user

Don't forget to belong to the pyenv group.

[root@localhost ~]# useradd foo -G pyenv

[root@localhost ~]# id foo
uid=1001(foo) gid=1002(foo) groups=1002(foo),1001(pyenv)

To add an existing user to group:

[root@localhost ~]# useradd bar
[root@localhost ~]# gpasswd -a bar pyenv

[root@localhost ~]# id bar
uid=1002(bar) gid=1003(bar) groups=1003(bar),1001(pyenv)

Use pyenv as a general user

Since pyenv global cannot be used, pyenv local is used for each user.

Those who want to use 3.7.6

[root@localhost ~]# su - bar
Last login: Wed Feb  5 03:55:34 UTC 2020 on pts/2
pyenv: cannot rehash: /opt/pyenv/shims isn't writable

[bar@localhost ~]$ pyenv local 3.7.6
[bar@localhost ~]$ python -V
Python 3.7.6

You can also use virtualenv in pyenv

[bar@localhost ~]$ python -m venv .venv
[bar@localhost ~]$ . .venv/bin/activate

(.venv) [bar@localhost ~]$ python -V
Python 3.7.6
(.venv) [bar@localhost ~]$ which python
~/.venv/bin/python

(.venv) [bar@localhost ~]$ pip install numpy==1.18.1

(.venv) [bar@localhost ~]$ python -c 'import numpy; print(numpy.__version__)'
1.18.1

Those who want to use 3.8.1

[root@localhost ~]# su - foo
Last login: Wed Feb  5 03:54:47 UTC 2020 on pts/1
pyenv: cannot rehash: /opt/pyenv/shims isn't writable

[foo@localhost ~]$ pyenv local 3.8.1
[foo@localhost ~]$ python -V
Python 3.8.1

Don't forget to add the --user option to pip install if you don't use virtualenv.

[foo@localhost ~]$ python -m pip install --user numpy==1.15

[foo@localhost ~]$ python -c 'import numpy; print(numpy.__version__)'
1.15.0

end.

It is unknown what will happen if you use it because it is not operating properly. At Your Own Risk.

I mean

Let's use docker.

The story of sharing the pyenv environment with multiple users