pkg_resources.DistributionNotFound: The 'apache-airflow==2.0.0.dev0' distribution was not found and is required by the application

[xu-xiang]

Apache Airflow version:

apache-airflow==2.0.0.dev0
master

Kubernetes version (if you are using kubernetes) (use kubectl version):

Environment:

• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):
  Mac OS 10.15.3
• Kernel (e.g. uname -a):
• Install tools:
• Others:

What happened:
Install Airflow :

(airflowenv) ➜ airflow git:(master) ✗ python3.8 setup.py install






running install
running bdist_egg
running egg_info
writing apache_airflow.egg-info/PKG-INFO
writing dependency_links to apache_airflow.egg-info/dependency_links.txt
writing entry points to apache_airflow.egg-info/entry_points.txt
writing requirements to apache_airflow.egg-info/requires.txt
writing top-level names to apache_airflow.egg-info/top_level.txt
reading manifest file 'apache_airflow.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no previously-included files matching '__pycache__' found anywhere in distribution
warning: no files found matching 'airflow/providers/cncf/kubernetes/example_dags/example_spark_kubernetes_operator_spark_pi.yaml'
writing manifest file 'apache_airflow.egg-info/SOURCES.txt'
installing library code to build/bdist.macosx-10.9-x86_64/egg
running install_lib
running build_py
copying kubernetes_tests/test_kubernetes_pod_operator.py -> build/lib/kubernetes_tests
copying airflow/settings.py -> build/lib/airflow
copying airflow/models/dagrun.py -> build/lib/airflow/models
copying airflow/models/baseoperator.py -> build/lib/airflow/models
copying airflow/jobs/scheduler_job.py -> build/lib/airflow/jobs
......
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byte-compiling build/bdist.macosx-10.9-x86_64/egg/airflow/ti_deps/deps/dag_ti_slots_available_dep.py to dag_ti_slots_available_dep.cpython-38.pyc
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byte-compiling build/bdist.macosx-10.9-x86_64/egg/airflow/example_dags/example_bash_operator.py to example_bash_operator.cpython-38.pyc
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byte-compiling build/bdist.macosx-10.9-x86_64/egg/airflow/kubernetes/pod_runtime_info_env.py to pod_runtime_info_env.cpython-38.pyc
byte-compiling build/bdist.macosx-10.9-x86_64/egg/airflow/kubernetes/pod_launcher.py to pod_launcher.cpython-38.pyc
byte-compiling build/bdist.macosx-10.9-x86_64/egg/airflow/__main__.py to __main__.cpython-38.pyc
byte-compiling build/bdist.macosx-10.9-x86_64/egg/airflow/decorators.py to decorators.cpython-38.pyc
creating build/bdist.macosx-10.9-x86_64/egg/EGG-INFO
copying apache_airflow.egg-info/PKG-INFO -> build/bdist.macosx-10.9-x86_64/egg/EGG-INFO
copying apache_airflow.egg-info/SOURCES.txt -> build/bdist.macosx-10.9-x86_64/egg/EGG-INFO
copying apache_airflow.egg-info/dependency_links.txt -> build/bdist.macosx-10.9-x86_64/egg/EGG-INFO
copying apache_airflow.egg-info/entry_points.txt -> build/bdist.macosx-10.9-x86_64/egg/EGG-INFO
copying apache_airflow.egg-info/not-zip-safe -> build/bdist.macosx-10.9-x86_64/egg/EGG-INFO
copying apache_airflow.egg-info/requires.txt -> build/bdist.macosx-10.9-x86_64/egg/EGG-INFO
copying apache_airflow.egg-info/top_level.txt -> build/bdist.macosx-10.9-x86_64/egg/EGG-INFO
creating 'dist/apache_airflow-2.0.0.dev0-py3.8.egg' and adding 'build/bdist.macosx-10.9-x86_64/egg' to it
removing 'build/bdist.macosx-10.9-x86_64/egg' (and everything under it)
Processing apache_airflow-2.0.0.dev0-py3.8.egg
creating /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages/apache_airflow-2.0.0.dev0-py3.8.egg
Extracting apache_airflow-2.0.0.dev0-py3.8.egg to /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Adding apache-airflow 2.0.0.dev0 to easy-install.pth file
Installing airflow script to /Users/jax/xx/pythonenv/airflowenv/bin

Installed /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages/apache_airflow-2.0.0.dev0-py3.8.egg
Processing dependencies for apache-airflow==2.0.0.dev0
Searching for Werkzeug==0.16.1
Best match: Werkzeug 0.16.1
Adding Werkzeug 0.16.1 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for unicodecsv==0.14.1
Best match: unicodecsv 0.14.1
Adding unicodecsv 0.14.1 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for tzlocal==1.5.1
Best match: tzlocal 1.5.1
Adding tzlocal 1.5.1 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for thrift==0.13.0
Best match: thrift 0.13.0
Adding thrift 0.13.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for tenacity==4.12.0
Best match: tenacity 4.12.0
Adding tenacity 4.12.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for tabulate==0.8.7
Best match: tabulate 0.8.7
Adding tabulate 0.8.7 to easy-install.pth file
Installing tabulate script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for SQLAlchemy-JSONField==0.9.0
Best match: SQLAlchemy-JSONField 0.9.0
Adding SQLAlchemy-JSONField 0.9.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for SQLAlchemy==1.3.18
Best match: SQLAlchemy 1.3.18
Adding SQLAlchemy 1.3.18 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for setproctitle==1.1.10
Best match: setproctitle 1.1.10
Adding setproctitle 1.1.10 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for requests==2.24.0
Best match: requests 2.24.0
Adding requests 2.24.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for python-slugify==4.0.1
Best match: python-slugify 4.0.1
Adding python-slugify 4.0.1 to easy-install.pth file
Installing slugify script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for python-nvd3==0.15.0
Best match: python-nvd3 0.15.0
Adding python-nvd3 0.15.0 to easy-install.pth file
Installing nvd3 script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for python-dateutil==2.8.1
Best match: python-dateutil 2.8.1
Adding python-dateutil 2.8.1 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for python-daemon==2.2.4
Best match: python-daemon 2.2.4
Adding python-daemon 2.2.4 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for Pygments==2.6.1
Best match: Pygments 2.6.1
Adding Pygments 2.6.1 to easy-install.pth file
Installing pygmentize script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for psutil==5.7.0
Best match: psutil 5.7.0
Adding psutil 5.7.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for pendulum==2.1.1
Best match: pendulum 2.1.1
Adding pendulum 2.1.1 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for pandas==1.0.5
Best match: pandas 1.0.5
Adding pandas 1.0.5 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for marshmallow-oneofschema==2.0.1
Best match: marshmallow-oneofschema 2.0.1
Adding marshmallow-oneofschema 2.0.1 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for MarkupSafe==1.1.1
Best match: MarkupSafe 1.1.1
Adding MarkupSafe 1.1.1 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for Markdown==2.6.11
Best match: Markdown 2.6.11
Adding Markdown 2.6.11 to easy-install.pth file
Installing markdown_py script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for lockfile==0.12.2
Best match: lockfile 0.12.2
Adding lockfile 0.12.2 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for lazy-object-proxy==1.5.0
Best match: lazy-object-proxy 1.5.0
Adding lazy-object-proxy 1.5.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for jsonschema==3.2.0
Best match: jsonschema 3.2.0
Adding jsonschema 3.2.0 to easy-install.pth file
Installing jsonschema script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for json-merge-patch==0.2
Best match: json-merge-patch 0.2
Adding json-merge-patch 0.2 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for Jinja2==2.10.3
Best match: Jinja2 2.10.3
Adding Jinja2 2.10.3 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for iso8601==0.1.12
Best match: iso8601 0.1.12
Adding iso8601 0.1.12 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for gunicorn==19.10.0
Best match: gunicorn 19.10.0
Adding gunicorn 19.10.0 to easy-install.pth file
Installing gunicorn script to /Users/jax/xx/pythonenv/airflowenv/bin
Installing gunicorn_paster script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for graphviz==0.14.1
Best match: graphviz 0.14.1
Adding graphviz 0.14.1 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for funcsigs==1.0.2
Best match: funcsigs 1.0.2
Adding funcsigs 1.0.2 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for Flask-WTF==0.14.3
Best match: Flask-WTF 0.14.3
Adding Flask-WTF 0.14.3 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for flask-swagger==0.2.13
Best match: flask-swagger 0.2.13
Adding flask-swagger 0.2.13 to easy-install.pth file
Installing flaskswagger script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for Flask-Login==0.4.1
Best match: Flask-Login 0.4.1
Adding Flask-Login 0.4.1 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for Flask-Caching==1.3.3
Best match: Flask-Caching 1.3.3
Adding Flask-Caching 1.3.3 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for Flask-AppBuilder==3.0.1
Best match: Flask-AppBuilder 3.0.1
Adding Flask-AppBuilder 3.0.1 to easy-install.pth file
Installing fabmanager script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for Flask==1.1.2
Best match: Flask 1.1.2
Adding Flask 1.1.2 to easy-install.pth file
Installing flask script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for dill==0.3.2
Best match: dill 0.3.2
Adding dill 0.3.2 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for cryptography==2.9.2
Best match: cryptography 2.9.2
Adding cryptography 2.9.2 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for croniter==0.3.34
Best match: croniter 0.3.34
Adding croniter 0.3.34 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for connexion==2.7.0
Best match: connexion 2.7.0
Adding connexion 2.7.0 to easy-install.pth file
Installing connexion script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for colorlog==4.0.2
Best match: colorlog 4.0.2
Adding colorlog 4.0.2 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for cattrs==1.0.0
Best match: cattrs 1.0.0
Adding cattrs 1.0.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for cached-property==1.5.1
Best match: cached-property 1.5.1
Adding cached-property 1.5.1 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for attrs==19.3.0
Best match: attrs 19.3.0
Adding attrs 19.3.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for argcomplete==1.12.0
Best match: argcomplete 1.12.0
Adding argcomplete 1.12.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for alembic==1.4.2
Best match: alembic 1.4.2
Adding alembic 1.4.2 to easy-install.pth file
Installing alembic script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for pytz==2020.1
Best match: pytz 2020.1
Adding pytz 2020.1 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for six==1.15.0
Best match: six 1.15.0
Adding six 1.15.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for idna==2.10
Best match: idna 2.10
Adding idna 2.10 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for urllib3==1.25.9
Best match: urllib3 1.25.9
Adding urllib3 1.25.9 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for chardet==3.0.4
Best match: chardet 3.0.4
Adding chardet 3.0.4 to easy-install.pth file
Installing chardetect script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for certifi==2020.6.20
Best match: certifi 2020.6.20
Adding certifi 2020.6.20 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for text-unidecode==1.3
Best match: text-unidecode 1.3
Adding text-unidecode 1.3 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for docutils==0.16
Best match: docutils 0.16
Adding docutils 0.16 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for setuptools==49.6.0
Best match: setuptools 49.6.0
Adding setuptools 49.6.0 to easy-install.pth file
Installing easy_install script to /Users/jax/xx/pythonenv/airflowenv/bin
Installing easy_install-3.8 script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for pytzdata==2020.1
Best match: pytzdata 2020.1
Adding pytzdata 2020.1 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for numpy==1.19.0
Best match: numpy 1.19.0
Adding numpy 1.19.0 to easy-install.pth file
Installing f2py script to /Users/jax/xx/pythonenv/airflowenv/bin
Installing f2py3 script to /Users/jax/xx/pythonenv/airflowenv/bin
Installing f2py3.8 script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for marshmallow==3.7.0
Best match: marshmallow 3.7.0
Adding marshmallow 3.7.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for pyrsistent==0.16.0
Best match: pyrsistent 0.16.0
Adding pyrsistent 0.16.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for itsdangerous==1.1.0
Best match: itsdangerous 1.1.0
Adding itsdangerous 1.1.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for WTForms==2.3.1
Best match: WTForms 2.3.1
Adding WTForms 2.3.1 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for PyYAML==5.3.1
Best match: PyYAML 5.3.1
Adding PyYAML 5.3.1 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for apispec==3.3.1
Best match: apispec 3.3.1
Adding apispec 3.3.1 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for click==6.7
Best match: click 6.7
Adding click 6.7 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for Flask-OpenID==1.2.5
Best match: Flask-OpenID 1.2.5
Adding Flask-OpenID 1.2.5 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for colorama==0.4.3
Best match: colorama 0.4.3
Adding colorama 0.4.3 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for PyJWT==1.7.1
Best match: PyJWT 1.7.1
Adding PyJWT 1.7.1 to easy-install.pth file
Installing pyjwt script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for SQLAlchemy-Utils==0.36.8
Best match: SQLAlchemy-Utils 0.36.8
Adding SQLAlchemy-Utils 0.36.8 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for email-validator==1.1.1
Best match: email-validator 1.1.1
Adding email-validator 1.1.1 to easy-install.pth file
Installing email_validator script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for Flask-SQLAlchemy==2.4.4
Best match: Flask-SQLAlchemy 2.4.4
Adding Flask-SQLAlchemy 2.4.4 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for Flask-JWT-Extended==3.24.1
Best match: Flask-JWT-Extended 3.24.1
Adding Flask-JWT-Extended 3.24.1 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for prison==0.1.3
Best match: prison 0.1.3
Adding prison 0.1.3 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for marshmallow-sqlalchemy==0.23.1
Best match: marshmallow-sqlalchemy 0.23.1
Adding marshmallow-sqlalchemy 0.23.1 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for Flask-Babel==1.0.0
Best match: Flask-Babel 1.0.0
Adding Flask-Babel 1.0.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for marshmallow-enum==1.5.1
Best match: marshmallow-enum 1.5.1
Adding marshmallow-enum 1.5.1 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for cffi==1.14.0
Best match: cffi 1.14.0
Adding cffi 1.14.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for natsort==7.0.1
Best match: natsort 7.0.1
Adding natsort 7.0.1 to easy-install.pth file
Installing natsort script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for swagger-ui-bundle==0.0.6
Best match: swagger-ui-bundle 0.0.6
Adding swagger-ui-bundle 0.0.6 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for openapi-spec-validator==0.2.8
Best match: openapi-spec-validator 0.2.8
Adding openapi-spec-validator 0.2.8 to easy-install.pth file
Installing openapi-spec-validator script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for clickclick==1.2.2
Best match: clickclick 1.2.2
Adding clickclick 1.2.2 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for inflection==0.5.0
Best match: inflection 0.5.0
Adding inflection 0.5.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for python-editor==1.0.4
Best match: python-editor 1.0.4
Adding python-editor 1.0.4 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for Mako==1.1.3
Best match: Mako 1.1.3
Adding Mako 1.1.3 to easy-install.pth file
Installing mako-render script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for python3-openid==3.2.0
Best match: python3-openid 3.2.0
Adding python3-openid 3.2.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for dnspython==1.16.0
Best match: dnspython 1.16.0
Adding dnspython 1.16.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for Babel==2.8.0
Best match: Babel 2.8.0
Adding Babel 2.8.0 to easy-install.pth file
Installing pybabel script to /Users/jax/xx/pythonenv/airflowenv/bin

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for pycparser==2.20
Best match: pycparser 2.20
Adding pycparser 2.20 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Searching for defusedxml==0.6.0
Best match: defusedxml 0.6.0
Adding defusedxml 0.6.0 to easy-install.pth file

Using /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages
Finished processing dependencies for apache-airflow==2.0.0.dev0
(airflowenv) ➜ airflow git:(master) ✗
(airflowenv) ➜ airflow git:(master) ✗
(airflowenv) ➜ airflow git:(master) ✗

What you expected to happen:

(airflowenv) ➜ airflow git:(master) ✗
(airflowenv) ➜ airflow git:(master) ✗
(airflowenv) ➜ airflow git:(master) ✗ airflow --help
Traceback (most recent call last):
  File "/usr/local/bin/airflow", line 6, in <module>
    from pkg_resources import load_entry_point
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pkg_resources/__init__.py", line 3262, in <module>
    def _initialize_master_working_set():
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pkg_resources/__init__.py", line 3245, in _call_aside
    f(*args, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pkg_resources/__init__.py", line 3274, in _initialize_master_working_set
    working_set = WorkingSet._build_master()
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pkg_resources/__init__.py", line 584, in _build_master
    ws.require(__requires__)
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pkg_resources/__init__.py", line 901, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/pkg_resources/__init__.py", line 787, in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'apache-airflow==2.0.0.dev0' distribution was not found and is required by the application
(airflowenv) ➜ airflow git:(master) ✗
(airflowenv) ➜ airflow git:(master) ✗

How to reproduce it:

Anything else we need to know:

[potiuk]

This is because you need to install airflow using older version of PIP (19.0.2). @kaxil and others - should we finally try to see what it take to migrate to the latest version? Anyone remembers why we are pinned to 19.0.2 ?

[potiuk]

Hello @xu-xiang. I just installed Airflow using the latest PIP version (and using the command you provided). It works for me for python 3.8 on Linux. The only thing that I can thing you might have problem with is PIP version (19.0.3 and above < 20.0.0) had a bug that made us pin to 19.0.2. Since PIP 20.2.+ works fine, I got rid of the 19.0.2 pinning in Docker images with #10542. Could you please verify if you have latest pip/easy_install installed and try again ?

[xu-xiang]

(airflowenv) ➜ pythonenv pip --version
pip 20.2.2 from /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages/pip (python 3.8)
(airflowenv) ➜ pythonenv
(airflowenv) ➜ pythonenv pip3 --version
pip 20.2.2 from /Users/jax/xx/pythonenv/airflowenv/lib/python3.8/site-packages/pip (python 3.8)
(airflowenv) ➜ pythonenv

[xu-xiang]

@potiuk My pip version is 20.2.2 when i create this issues.
Use (airflowenv) ➜ airflow git:(master) ✗ python3.8 setup.py install install airflow and error with pkg_resources.DistributionNotFound: The 'apache-airflow==2.0.0.dev0' distribution was not found and is required by the application

[potiuk]

@xu-xiang - can you please try to replicate using the latest master and the standard virtualenv we recommend in CONTRIbUTING (with pyenv or mkvirtualenv and report if you have a success ? I think this.might be about some non-standard virtualenv setting you have