custom user model that maintains id as pk

src/apps/lyric/apps.py

@@ -2,4 +2,4 @@ from django.apps import AppConfig
 
 
 class LyricConfig(AppConfig):
-    name = 'lyric'
+    name = 'apps.lyric'

src/apps/lyric/migrations/0001_initial.py

@@ -0,0 +1,21 @@
+# Generated by Django 6.0 on 2026-01-30 20:02
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='User',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('email', models.EmailField(max_length=254, unique=True)),
+            ],
+        ),
+    ]

src/apps/lyric/models.py

@@ -1,3 +1,10 @@
 from django.db import models
 
-# Create your models here.
+class User(models.Model):
+    # email = models.EmailField(primary_key=True)
+    email = models.EmailField(unique=True)
+
+    REQUIRED_FIELDS = []
+    USERNAME_FIELD = "email"
+    is_anonymous = False
+    is_authenticated = True

src/apps/lyric/tests.py

@@ -1,3 +0,0 @@
-from django.test import TestCase
-
-# Create your tests here.

src/apps/lyric/tests/test_models.py

@@ -0,0 +1,15 @@
+from django.contrib import auth
+from django.test import TestCase
+from ..models import User
+
+class UserModelTest(TestCase):
+    def test_model_is_configured_for_django_auth(self):
+        self.assertEqual(auth.get_user_model(), User)
+    
+    def test_user_is_valid_with_email_only(self):
+        user = User(email="a@b.cde")
+        user.full_clean() # should not raise
+
+    def test_id_is_primary_key(self):
+        user = User(id="123")
+        self.assertEqual(user.pk, "123")

src/core/settings.py

@@ -47,6 +47,7 @@ INSTALLED_APPS = [
     'django.contrib.staticfiles',
     # Custom apps
     'apps.dashboard',
+    'apps.lyric',
     # Depend apps
 ]
 
@@ -110,6 +111,8 @@ AUTH_PASSWORD_VALIDATORS = [
     },
 ]
 
+AUTH_USER_MODEL = "lyric.User"
+
 
 # Internationalization
 # https://docs.djangoproject.com/en/6.0/topics/i18n/