Project with multiple Pipfiles

Question

My Project's structure :

root  
|-Pipfile
|-main.py
|
|-first_plugin 
|    |-Pipfile
|    |-main.py
|-second_plugin 
|    |-Pipfile
|    |-main.py

The projects's main.py functionalities are to :

1. Run git clone in order to download each plugin from Github
2. Run pipenv install in order to install their dependencies
3. Execute the run() function from each of the plugins' main.py.

The root/Pipfile :

[[source]]
url = "https://pypi.org/simple"
verify_ssl = true
name = "pypi"

[packages]
GitPython = ">=3.1"
PyYAML = ">=6.0"

[dev-packages]

[requires]
python_version = "3.8"

The first_plugin/Pipfile :

[[source]]
url = "https://pypi.org/simple"
verify_ssl = true
name = "pypi"

[packages]
"-e ." = "*"
PyYAML = ">=6.0"
requests = "*"

[dev-packages]

[requires]
python_version = "3.8"

The first_plugin/main.py :

from Plugins.plugin import Plugin
import requests


class FirstPlugin(Plugin):

    def run(self):
        if self.is_activated:
            print("The First Plugin is being run..")
        else:
            print("The First Plugin can not run because it is not activated")

The function read_from_yml downloads the plugins with git clone nad runs pipenv install in order to instrall their dependencies :

import yaml
import git
import os
import shutil
import subprocess as sp
import sys

"""
Reads plugins from a Yaml file and downloads them 
with git clone if there is not a subdirectory with their 
name in the Plugins directory


The format of the Yaml file must be as shown bellow:

    - It must contain a single list of dictionaries that must have the keys bellow :
    
        - name : The name of the plugin
        - url : a url of the git repo in which the plugin is stored
"""
def read_from_yml():
    #Open the yml file
    with open("plugins.yml", "r") as stream:
        try:
            plugins = yaml.safe_load(stream)

            #Get all the subdirectories of the Plugins directory
            PluginFolder = "Plugins/"
            possible_plugins = os.listdir(PluginFolder)

            for plugin in plugins:
                #if the plugin does not have a url, do nothing
                if plugin["url"] == '':
                    print("Not in the web")
                else:
                    #if the plugin has a url, try to remove the directory of the
                    # plugin from the Plugins directory. We do that in order to download the latest version of
                    # the plugin from the internet 
                    
                    try:
                        shutil.rmtree(PluginFolder + plugin["name"])
                    except OSError as e:
                        print("Error: %s - %s." % (e.filename, e.strerror))
                    
                    # Git clone the repository of the plugin into the Plugins directory
                    git.Repo.clone_from(plugin["url"], os.path.join(os.getcwd(), PluginFolder + plugin["name"]))

                    
                    all_files = os.listdir(PluginFolder + plugin["name"])

                    # Check if there is a requirements.txt file and install
                    # the dependencies it contains
                    if "Pipfile" in all_files:
                        os.chdir(os.getcwd() + "/" + PluginFolder + plugin["name"])
                        print(os.getcwd())
                        sp.check_call(["pipenv", "install"])
                        sp.check_call(["pipenv", "graph"])
                        new_cwd = os.getcwd().replace("/" + PluginFolder + plugin["name"], '')
                        os.chdir(new_cwd)
                        print(os.getcwd())

        except yaml.YAMLError as exc:
            print(exc)

The problem :

When I run the project with the cmd python3 main.py the plugins' dependencies are installed as expected. But when I use the cmd pipenv run python3 main.py, the plugins' dependencies are not installed and the program crashes at the first plugin with this error message :

File "Plugins/First_plugin/main.py", line 2, in <module>
    import requests
ModuleNotFoundError: No module named 'requests'

Edit ;

This cmd sp.check_call(["pipenv", "graph"]) prints all the pacages downloaded by pipenv. I call it in the First_plugin dir and this is the result

PyYAML==6.0
requests==2.26.0
  - certifi [required: >=2017.4.17, installed: 2021.10.8]
  - charset-normalizer [required: ~=2.0.0, installed: 2.0.9]
  - idna [required: >=2.5,<4, installed: 3.3]
  - urllib3 [required: >=1.21.1,<1.27, installed: 1.26.7]

This means that the requests packages is installed. But the program still prints the previous error message afterwards :

File "Plugins/First_plugin/main.py", line 2, in <module>
    import requests
ModuleNotFoundError: No module named 'requests'