title: Run Django's model makemigration from package
body: <p>I have different package's structure and i want to run makemigration and then migrate but it doesn't work. i have app <strong>user_app</strong> and models package where is my custom user model's file. when i run makemigration i have this - &gt; <strong>No changes detected in app 'user_app'</strong>
  what i can do?
  it's my project structure</p>
  <p><a href="https://i.stack.imgur.com/RNVe6.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/RNVe6.png" alt="enter image description here" /></a></p>
  <p><strong>user.py</strong></p>
  <pre><code>from django.db import models
  from django.contrib.auth.models import AbstractUser, BaseUserManager
  from django.db.models.signals import post_save
  from django.dispatch import receiver
  from rest_framework.authtoken.models import Token
  from django.core.exceptions import ValidationError
  from user_app.const import STATUS_CHOICES
  
  
  def validate_length(value):
      if len(str(value)) != 11:
          raise ValidationError(('Passport must be 11 digit!'))
  
  
  class MyUserManager(BaseUserManager):
      def create_user(self, email, last_name, first_name, passport_id, password=None):
          if not email:
              raise ValueError('Email is required')
          elif not last_name:
              raise ValueError('Last name is required')
          elif not first_name:
              raise ValueError('First name is required')
          elif not passport_id:
              raise ValueError('Passport is required')
          user = self.model(
              email=self.normalize_email(email),
              last_name=last_name,
              first_name=first_name,
              passport_id=passport_id
          )
          user.set_password(password)
          user.save(using=self._db)
          return user
  
      def create_superuser(self, email, password):
          user = self.model(
              email=self.normalize_email(email),
          )
          user.set_password(password)
          user.is_admin = True
          user.is_staff = True
          user.is_superuser = True
          user.save(using=self._db)
          return user
  
  
  class User(AbstractUser):
      email = models.EmailField(unique=True, verbose_name='Email', error_messages={'unique': 'This email already exists'})
      first_name = models.CharField(max_length=20, verbose_name='First name')
      last_name = models.CharField(max_length=25, verbose_name='Last name')
      passport_id = models.BigIntegerField(validators=[validate_length], verbose_name='Passport')
      status = models.CharField(max_length=20, choices=STATUS_CHOICES)
  
      object = MyUserManager()
      USERNAME_FIELD = 'email'
      REQUIRED_FIELDS = []
  
      class Meta:
          verbose_name = ('User')
  
      def __str__(self):
          return self.email
  
  
  @receiver(post_save, sender=User)
  def create_auth_token(sender, instance=None, created=False, **kwargs):
      if created:
          Token.objects.create(user=instance)
  </code></pre>