title: Not able to install packages or upgrade pip with Heroku
body: <p>I'm using GitHub and Heroku to run my Django app.  The app works as expected locally but I'm running into problems when pushing (via GitHub) it up to Heroku.  I think I boiled it down to something not working with requirements.txt or the general pip set up.  Specifically, I've been trying to install Django-Bootstrap4.  It is in the requirements file.</p>
  
  <p>I definitely don't understand this process and I very well might not even be asking the right questions. But I've tried following all of the documentation found here: <a href="https://devcenter.heroku.com/articles/python-pip" rel="noreferrer">https://devcenter.heroku.com/articles/python-pip</a>.</p>
  
  <p>When I'm in the virtual environment locally, everything looks fine.  Then after doing:</p>
  
  <pre><code>&gt; heroku login
  &gt; heroku run pip install django-bootstrap4 (or pip or pandas)
  </code></pre>
  
  <p>It seems to install, but then running:</p>
  
  <pre><code>&gt; heroku run pip list
  </code></pre>
  
  <p>nothing has changed.  TIA</p>
  
  <p>requirements.txt</p>
  
  <pre><code>certifi==2018.8.24
  chardet==3.0.4
  dj-database-url==0.5.0
  Django==2.1.2
  django-bootstrap4==0.0.7
  django-heroku==0.3.1
  django-registration-redux==2.5
  gunicorn==19.9.0
  idna==2.7
  psycopg2==2.7.5
  pytz==2018.5
  requests==2.19.1
  urllib3==1.23
  whitenoise==4.1
  </code></pre>
  
  <p>Pipfile</p>
  
  <pre><code>[[source]]
  url = "https://pypi.org/simple"
  verify_ssl = true
  name = "pypi"
  
  [packages]
  
  [dev-packages]
  
  [requires]
  python_version = "3.6"
  </code></pre>
  
  <p>Adding Log:</p>
  
  <pre><code>2018-11-06T02:34:49.915341+00:00 app[web.1]: Traceback (most recent call last):
  2018-11-06T02:34:49.915343+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
  2018-11-06T02:34:49.915345+00:00 app[web.1]: worker.init_process()
  2018-11-06T02:34:49.915346+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/workers/base.py", line 129, in init_process
  2018-11-06T02:34:49.915347+00:00 app[web.1]: self.load_wsgi()
  2018-11-06T02:34:49.915349+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/workers/base.py", line 138, in load_wsgi
  2018-11-06T02:34:49.915350+00:00 app[web.1]: self.wsgi = self.app.wsgi()
  2018-11-06T02:34:49.915351+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/base.py", line 67, in wsgi
  2018-11-06T02:34:49.915352+00:00 app[web.1]: self.callable = self.load()
  2018-11-06T02:34:49.915354+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py", line 52, in load
  2018-11-06T02:34:49.915355+00:00 app[web.1]: return self.load_wsgiapp()
  2018-11-06T02:34:49.915356+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py", line 41, in load_wsgiapp
  2018-11-06T02:34:49.915357+00:00 app[web.1]: return util.import_app(self.app_uri)
  2018-11-06T02:34:49.915358+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/util.py", line 350, in import_app
  2018-11-06T02:34:49.915359+00:00 app[web.1]: __import__(module)
  2018-11-06T02:34:49.915360+00:00 app[web.1]: File "/app/app/wsgi.py", line 7, in &lt;module&gt;
  2018-11-06T02:34:49.915362+00:00 app[web.1]: application = get_wsgi_application()
  2018-11-06T02:34:49.915363+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/django/core/wsgi.py", line 12, in get_wsgi_application
  2018-11-06T02:34:49.915364+00:00 app[web.1]: django.setup(set_prefix=False)
  2018-11-06T02:34:49.915365+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/django/__init__.py", line 24, in setup
  2018-11-06T02:34:49.915366+00:00 app[web.1]: apps.populate(settings.INSTALLED_APPS)
  2018-11-06T02:34:49.915367+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/django/apps/registry.py", line 89, in populate
  2018-11-06T02:34:49.915368+00:00 app[web.1]: app_config = AppConfig.create(entry)
  2018-11-06T02:34:49.915369+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/django/apps/config.py", line 90, in create
  2018-11-06T02:34:49.915370+00:00 app[web.1]: module = import_module(entry)
  2018-11-06T02:34:49.915372+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/importlib/__init__.py", line 126, in import_module
  2018-11-06T02:34:49.915373+00:00 app[web.1]: return _bootstrap._gcd_import(name[level:], package, level)
  2018-11-06T02:34:49.915426+00:00 app[web.1]: ModuleNotFoundError: No module named 'bootstrap4'
  2018-11-06T02:34:49.915794+00:00 app[web.1]: [2018-11-06 02:34:49 +0000] [11] [INFO] Worker exiting (pid: 11)
  2018-11-06T02:34:49.919437+00:00 app[web.1]: [2018-11-06 02:34:49 +0000] [10] [ERROR] Exception in worker process
  2018-11-06T02:34:49.919439+00:00 app[web.1]: Traceback (most recent call last):
  2018-11-06T02:34:49.919441+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
  2018-11-06T02:34:49.919443+00:00 app[web.1]: worker.init_process()
  2018-11-06T02:34:49.919444+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/workers/base.py", line 129, in init_process
  2018-11-06T02:34:49.919446+00:00 app[web.1]: self.load_wsgi()
  2018-11-06T02:34:49.919447+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/workers/base.py", line 138, in load_wsgi
  2018-11-06T02:34:49.919448+00:00 app[web.1]: self.wsgi = self.app.wsgi()
  2018-11-06T02:34:49.919450+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/base.py", line 67, in wsgi
  2018-11-06T02:34:49.919451+00:00 app[web.1]: self.callable = self.load()
  2018-11-06T02:34:49.919453+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py", line 52, in load
  2018-11-06T02:34:49.919454+00:00 app[web.1]: return self.load_wsgiapp()
  2018-11-06T02:34:49.919456+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py", line 41, in load_wsgiapp
  2018-11-06T02:34:49.919458+00:00 app[web.1]: return util.import_app(self.app_uri)
  2018-11-06T02:34:49.919459+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/util.py", line 350, in import_app
  2018-11-06T02:34:49.919461+00:00 app[web.1]: __import__(module)
  2018-11-06T02:34:49.919462+00:00 app[web.1]: File "/app/app/wsgi.py", line 7, in &lt;module&gt;
  2018-11-06T02:34:49.919464+00:00 app[web.1]: application = get_wsgi_application()
  2018-11-06T02:34:49.919465+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/django/core/wsgi.py", line 12, in get_wsgi_application
  2018-11-06T02:34:49.919467+00:00 app[web.1]: django.setup(set_prefix=False)
  2018-11-06T02:34:49.919469+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/django/__init__.py", line 24, in setup
  2018-11-06T02:34:49.919470+00:00 app[web.1]: apps.populate(settings.INSTALLED_APPS)
  2018-11-06T02:34:49.919472+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/django/apps/registry.py", line 89, in populate
  2018-11-06T02:34:49.919473+00:00 app[web.1]: app_config = AppConfig.create(entry)
  2018-11-06T02:34:49.919474+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/django/apps/config.py", line 90, in create
  2018-11-06T02:34:49.919476+00:00 app[web.1]: module = import_module(entry)
  2018-11-06T02:34:49.919477+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/importlib/__init__.py", line 126, in import_module
  2018-11-06T02:34:49.919479+00:00 app[web.1]: return _bootstrap._gcd_import(name[level:], package, level)
  2018-11-06T02:34:49.919480+00:00 app[web.1]: ModuleNotFoundError: No module named 'bootstrap4'
  2018-11-06T02:34:49.920093+00:00 app[web.1]: [2018-11-06 02:34:49 +0000] [10] [INFO] Worker exiting (pid: 10)
  2018-11-06T02:34:50.079130+00:00 app[web.1]: [2018-11-06 02:34:50 +0000] [4] [INFO] Shutting down: Master
  2018-11-06T02:34:50.079281+00:00 app[web.1]: [2018-11-06 02:34:50 +0000] [4] [INFO] Reason: Worker failed to boot.
  </code></pre>