diff --git a/requirements-test-db.txt b/requirements-test-db.txt
new file mode 100644
index 0000000..cfd42eb
--- /dev/null
+++ b/requirements-test-db.txt
@@ -0,0 +1 @@
+pytest-postgresql
diff --git a/requirements-test.txt b/requirements-test.txt
index 170e10c..6bf9fdc 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -1,6 +1,5 @@
 pytest
-pytest-postgresql
 requests-mock
 hypothesis >= 3.11.0
 pre-commit
 pytz
diff --git a/setup.py b/setup.py
index 43d5dca..3544b4d 100755
--- a/setup.py
+++ b/setup.py
@@ -1,83 +1,87 @@
 #!/usr/bin/env python3
 # Copyright (C) 2015-2018  The Software Heritage developers
 # See the AUTHORS file at the top-level directory of this distribution
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 import os
 from setuptools import setup, find_packages
 
 from os import path
 from io import open
 
 here = path.abspath(path.dirname(__file__))
 
 # Get the long description from the README file
 with open(path.join(here, 'README.md'), encoding='utf-8') as f:
     long_description = f.read()
 
 
 def parse_requirements(*names):
     requirements = []
     for name in names:
         if name:
             reqf = 'requirements-%s.txt' % name
         else:
             reqf = 'requirements.txt'
 
         if not os.path.exists(reqf):
             return requirements
 
         with open(reqf) as f:
             for line in f.readlines():
                 line = line.strip()
                 if not line or line.startswith('#'):
                     continue
                 requirements.append(line)
     return requirements
 
 
 setup(
     name='swh.core',
     description='Software Heritage core utilities',
     long_description=long_description,
     long_description_content_type='text/markdown',
     author='Software Heritage developers',
     author_email='swh-devel@inria.fr',
     url='https://forge.softwareheritage.org/diffusion/DCORE/',
     packages=find_packages(),
     py_modules=['pytest_swh_core'],
     scripts=[],
     install_requires=parse_requirements(None, 'swh'),
     setup_requires=['vcversioner'],
     extras_require={
-        'testing': parse_requirements('test', 'db', 'http', 'logging'),
+        'testing-core': parse_requirements('test'),
         'logging': parse_requirements('logging'),
         'db': parse_requirements('db'),
+        'testing-db': parse_requirements('test-db'),
         'http': parse_requirements('http'),
+        # kitchen sink, please do not use
+        'testing': parse_requirements('test', 'test-db', 'db', 'http',
+                                      'logging'),
     },
     vcversioner={},
     include_package_data=True,
     entry_points='''
         [console_scripts]
         swh=swh.core.cli:main
         swh-db-init=swh.core.cli.db:db_init
         [swh.cli.subcommands]
         db=swh.core.cli.db:db
         db-init=swh.core.cli.db:db_init
         [pytest11]
         pytest_swh_core = swh.core.pytest_plugin
     ''',
     classifiers=[
         "Programming Language :: Python :: 3",
         "Intended Audience :: Developers",
         "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",
         "Operating System :: OS Independent",
         "Development Status :: 5 - Production/Stable",
     ],
     project_urls={
         'Bug Reports': 'https://forge.softwareheritage.org/maniphest',
         'Funding': 'https://www.softwareheritage.org/donate',
         'Source': 'https://forge.softwareheritage.org/source/swh-core',
     },
 )
diff --git a/tox.ini b/tox.ini
index ec24e0f..d82c117 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,40 +1,40 @@
 [tox]
 envlist=flake8,mypy,py3-{core,db,server}
 
 [testenv]
 deps =
-  -rrequirements-test.txt
-  core: -rrequirements-logging.txt
-  db: .[db]
+  .[testing-core]
+  core: .[logging]
+  db: .[db,testing-db]
   db: pifpaf
   server: .[http]
   cover: pytest-cov
 commands =
   db: pifpaf run postgresql -- \
     pytest --doctest-modules \
   slow: --hypothesis-profile=slow \
   cover: --cov={envsitepackagesdir}/swh/core --cov-branch \
   core: {envsitepackagesdir}/swh/core/tests \
   db: {envsitepackagesdir}/swh/core/db/tests \
   server: {envsitepackagesdir}/swh/core/api/tests \
     {posargs}
 
 [testenv:py3]
 skip_install = true
 deps = tox
 commands = tox -e py3-core-db-server-slow-cover -- {posargs}
 
 [testenv:flake8]
 skip_install = true
 deps =
   flake8
 commands =
   {envpython} -m flake8
 
 [testenv:mypy]
 skip_install = true
 deps =
-  .[testing]
+  .[logging,db,http,testing-core,testing-db]
   mypy
 commands =
   mypy swh