294
360
What is PEP 517?
PEP 517 defines a
standard interface between build frontends such as pip
and uv, and build backends such as Setuptools, Flit,
Hatchling, and PDM.
It allows projects to declare their build dependencies in the
[build-system] table of pyproject.toml.
Legend
- Green projects (294; 81.7%): declares a PEP 517 build backend
- Yellow projects (61; 16.9%): no PEP 517 backend, but a universal wheel
- Orange projects (1; 0.3%): no PEP 517 backend and no universal wheel
- Gray projects (4; 1.1%): no source distribution
The package ranking comes from Hugo van Kemenade. The complete build-system dataset is available as csv.
boto3
packaging
typing-extensions
certifi
idna
urllib3
charset-normalizer
requests
cryptography
cffi
pluggy
pyyaml
pycparser
pygments
python-dateutil
six
setuptools
pydantic
pydantic-core
click
numpy
botocore
anyio
annotated-types
pytest
iniconfig
typing-inspection
h11
attrs
markupsafe
httpx
httpcore
s3transfer
protobuf
python-dotenv
pyjwt
jinja2
pandas
aiobotocore
starlette
opentelemetry-api
platformdirs
pillow
uvicorn
pathspec
rpds-py
fsspec
jsonschema
filelock
jmespath
tzdata
referencing
tomlkit
jsonschema-specifications
multidict
markdown-it-py
rich
aiohttp
yarl
mdurl
propcache
pip
annotated-doc
websockets
fastapi
googleapis-common-protos
pytz
frozenlist
tqdm
pyasn1
aiosignal
aiohappyeyeballs
sniffio
pydantic-settings
wrapt
python-multipart
google-auth
pyarrow
trove-classifiers
zipp
lxml
tenacity
importlib-metadata
pyasn1-modules
ruff
sqlalchemy
jiter
greenlet
hatchling
wheel
pyparsing
grpcio
regex
truststore
scipy
grpcio-status
openai
httpx2
watchfiles
httpcore2
psutil
google-api-core
openpyxl
et-xmlfile
soupsieve
distro
opentelemetry-semantic-conventions
coverage
opentelemetry-sdk
beautifulsoup4
shellingham
sse-starlette
s3fs
mypy-extensions
typer
mcp
proto-plus
colorama
wcwidth
uvloop
huggingface-hub
dnspython
requests-oauthlib
httptools
tomli
pytest-asyncio
cachetools
opentelemetry-proto
docstring-parser
editables
oauthlib
werkzeug
more-itertools
virtualenv
defusedxml
sortedcontainers
opentelemetry-exporter-otlp-proto-common
networkx
pytest-cov
redis
distlib
exceptiongroup
hf-xet
fonttools
msgpack
psycopg2-binary
itsdangerous
opentelemetry-exporter-otlp-proto-http
mako
alembic
requests-toolbelt
orjson
prompt-toolkit
tiktoken
scikit-learn
tokenizers
rsa
cloudpickle
threadpoolctl
mypy
isodate
flask
email-validator
anthropic
nodeenv
pyopenssl
python-discovery
httpx-sse
joblib
psycopg
blinker
matplotlib
zstandard
tzlocal
execnet
pytest-xdist
h2
google-cloud-core
hpack
websocket-client
psycopg-binary
hyperframe
tabulate
pynacl
azure-core
kiwisolver
pypdf
ruamel-yaml
bcrypt
opentelemetry-instrumentation
google-cloud-storage
google-cloud-bigquery
chardet
msal
google-crc32c
contourpy
cycler
langchain
prometheus-client
dill
librt
google-resumable-media
google-genai
xxhash
keyring
xlsxwriter
langchain-core
decorator
identify
grpcio-tools
pre-commit
jaraco-classes
cfgv
jaraco-functools
uv
jsonpointer
sentry-sdk
sympy
jeepney
gitpython
mpmath
secretstorage
jaraco-context
backoff
asgiref
docutils
deprecated
docker
asn1crypto
toml
uritemplate
smmap
webencodings
ptyprocess
narwhals
traitlets
gitdb
google-api-python-client
azure-identity
asyncpg
aiofiles
google-auth-httplib2
pexpect
rapidfuzz
httplib2
opentelemetry-util-http
msal-extensions
authlib
pytest-json-ctrf
fastjsonschema
jsonpatch
black
playwright
executing
google-auth-oauthlib
opentelemetry-exporter-otlp-proto-grpc
sqlparse
python-docx
babel
pyee
async-timeout
pymupdf
gunicorn
tornado
markdown
grpc-google-iam-v1
joserfc
python-pptx
transformers
tinycss2
paramiko
jedi
structlog
parso
snowflake-connector-python
flatbuffers
ipython
asttokens
xmltodict
mcp-types
pyzmq
pytest-timeout
brotli
pyproject-hooks
onnxruntime
matplotlib-inline
pure-eval
azure-storage-blob
watchdog
build
ast-serialize
stack-data
python-json-logger
aioitertools
litellm
isort
cachecontrol
griffelib
google-cloud-aiplatform
jupyter-core
typedload
nbformat
croniter
pytest-mock
debugpy
marshmallow
types-pyyaml
langsmith
nest-asyncio
awscli
poetry-core
cython
safetensors
pypdfium2
multiprocess
slack-sdk
databricks-sdk
sqlglot
lz4
awswrangler
lark
kubernetes
jupyter-client
beartype
pytokens
uuid-utils
tomli-w
setuptools-scm
opentelemetry-instrumentation-asgi
pycryptodome
pymysql
opentelemetry-instrumentation-fastapi
types-requests
fastuuid
reportlab
termcolor
loguru
jsonref
xlrd
argon2-cffi-bindings
cyclopts
text-unidecode
pyperclip
argon2-cffi
vcs-versioning
python-slugify
pathable
mdit-py-plugins
jsonschema-path
rfc3339-validator
mccabe
shapely
faker
semver
cbor2
graphql-core
opentelemetry-instrumentation-requests
mistune
wsproto
rich-rst