Build Error: /usr/bin/python3.9: No module named pip (Django Vercel Deployment)

[dalbanhi]

Summary

Vercel deployment of Django project is failing due to:

/usr/bin/python3.9: No module named pip

Interestingly, this doesn't fail loudly, but it does prevent any of the packages from being installed, I think, because it then fails to install Django.

Here is my build file (taken from this similar issue

#Build the project
echo "Building the project..."
python3.9 -m pip install -r requirements.txt

echo "Make Migration..."
python3.9 manage.py makemigrations --noinput
python3.9 manage.py migrate --noinput

echo "Collect Static..."
python3.9 manage.py collectstatic --noinput --clear

Later on, I also get:

Traceback (most recent call last):
  File "/vercel/path0/manage.py", line 11, in main
    from django.core.management import execute_from_command_line
ModuleNotFoundError: No module named 'django'

For reference, this is my requirements.txt

aiohttp==3.9.1
aiosignal==1.3.1
asgiref==3.7.2
attrs==23.1.0
certifi==2023.7.22
click==8.1.3
distlib==0.3.7
Django==4.2.7
django-admin-datta==1.0.10
django-cors-headers==4.2.0
django-highlightjs==0.2.11
django-webpack-loader==2.0.1
djangorestframework==3.14.0
djhtml==3.0.6
fastjsonschema==2.19.0
filelock==3.12.2
frozenlist==1.4.0
idna==3.6
jsonschema==4.20.0
jsonschema-specifications==2023.11.2
jupyter_core==5.5.0
markdown2==2.4.9
multidict==6.0.5
mypy-extensions==1.0.0
nbformat==5.9.2
packaging==23.1
pathspec==0.11.1
pigar==2.1.1
pipenv==2023.7.23
platformdirs==3.9.1
psycopg2==2.9.9
pycodestyle==2.10.0
pytz==2023.3
referencing==0.31.1
rpds-py==0.13.2
sqlparse==0.4.4
traitlets==5.14.0
virtualenv==20.24.2
virtualenv-clone==0.5.7
yarl==1.9.3

and this is my vercel.json

{
    "builds": [
      {
        "src": "core/wsgi.py",
        "use": "@vercel/python",
        "config": { "maxLambdaSize": "15mb", "runtime": "python3.9" }
      },
      {
        "src": "build_files.sh",
        "use": "@vercel/static-build",
        "config": {
          "distDir": "staticfiles"
        }
      }
    ],
    "routes": [
      {
        "src": "/static/(.*)",
        "dest": "/static/$1"
      },
      {
        "src": "/(.*)",
        "dest": "core/wsgi.py"
      }
    ]
  }

Why is pip not found as a module?

Example

No response

Steps to Reproduce

1. Clone my repo from here
2. Attempt to deploy on vercel

[yaroslav-maksymiv]

I have got the same problem. Did you manage to resolve it?

[thezades]

i have got the same problem but changing node.js to 18x fixed it . https://vercel.com/docs/functions/runtimes/node-js#setting-the-node.js-version-in-project-settings.hope it helps somone :)

[yaroslav-maksymiv]

I changed node.js version to 18x in settings and it helped! Thank you so much!