Installing Server downgrades prefect to 1.4?

[bjarneschroeder]

Hello,
I am currently trying to setup a prefect server locally.
Therefore I am following the installation accrodingly.

Installing prefect with:

pip install prefect

Result of prefect --version:

2.6.4

Fine, typing prefect server start results in:

No such command 'server'.

So now I started the Installation section of server-repo:

1. Cloning the repo, no problem.
2. But then running:

pip install -e .

Results in the following trace for me:

Obtaining file:///Users/bjarne/git/server
  Installing build dependencies ... done
  Checking if build backend supports build_editable ... done
  Getting requirements to build editable ... done
  Preparing editable metadata (pyproject.toml) ... done
Requirement already satisfied: urllib3>=1.26.0 in /opt/homebrew/lib/python3.10/site-packages (from prefect-server==2022.9.23+15.g356da2d.dirty) (1.26.12)
Requirement already satisfied: alembic>=1.2 in /opt/homebrew/lib/python3.10/site-packages (from prefect-server==2022.9.23+15.g356da2d.dirty) (1.8.1)
Collecting prefect<2.0.0,>=1.0.0
  Using cached prefect-1.4.0-py3-none-any.whl (605 kB)
Requirement already satisfied: docker>=3.4 in /opt/homebrew/lib/python3.10/site-packages (from prefect-server==2022.9.23+15.g356da2d.dirty) (6.0.0)
Collecting graphql-core<3.1
  Using cached graphql_core-3.0.6-py3-none-any.whl (181 kB)
Requirement already satisfied: asyncpg>=0.20 in /opt/homebrew/lib/python3.10/site-packages (from prefect-server==2022.9.23+15.g356da2d.dirty) (0.26.0)
Requirement already satisfied: pydantic>=1.7 in /opt/homebrew/lib/python3.10/site-packages (from prefect-server==2022.9.23+15.g356da2d.dirty) (1.10.2)
Collecting ariadne>=0.8.0
  Using cached ariadne-0.16.1-py3-none-any.whl (52 kB)
Requirement already satisfied: httpx>=0.13.0 in /opt/homebrew/lib/python3.10/site-packages (from prefect-server==2022.9.23+15.g356da2d.dirty) (0.23.0)
Requirement already satisfied: pyyaml>=3.13 in /Users/bjarne/Library/Python/3.10/lib/python/site-packages (from prefect-server==2022.9.23+15.g356da2d.dirty) (6.0)
Requirement already satisfied: click>=6.7 in /opt/homebrew/lib/python3.10/site-packages (from prefect-server==2022.9.23+15.g356da2d.dirty) (8.1.3)
Requirement already satisfied: uvicorn>=0.11.4 in /opt/homebrew/lib/python3.10/site-packages (from prefect-server==2022.9.23+15.g356da2d.dirty) (0.19.0)
Requirement already satisfied: python-slugify>=1.2 in /opt/homebrew/lib/python3.10/site-packages (from prefect-server==2022.9.23+15.g356da2d.dirty) (6.1.2)
Collecting psycopg2-binary>=2.7
  Downloading psycopg2_binary-2.9.5-cp310-cp310-macosx_11_0_arm64.whl (2.0 MB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 2.0/2.0 MB 5.5 MB/s eta 0:00:00
Requirement already satisfied: starlette>=0.13 in /opt/homebrew/lib/python3.10/site-packages (from prefect-server==2022.9.23+15.g356da2d.dirty) (0.20.4)
Requirement already satisfied: toml>=0.9.0 in /opt/homebrew/lib/python3.10/site-packages (from prefect-server==2022.9.23+15.g356da2d.dirty) (0.10.2)
Collecting json-log-formatter>=0.3.0
  Using cached JSON-log-formatter-0.5.1.tar.gz (4.8 kB)
  Preparing metadata (setup.py) ... done
Requirement already satisfied: packaging>=20.0 in /Users/bjarne/Library/Python/3.10/lib/python/site-packages (from prefect-server==2022.9.23+15.g356da2d.dirty) (21.3)
Requirement already satisfied: coolname>=1.1 in /opt/homebrew/lib/python3.10/site-packages (from prefect-server==2022.9.23+15.g356da2d.dirty) (2.0.0)
Requirement already satisfied: SQLAlchemy>=1.3.0 in /opt/homebrew/lib/python3.10/site-packages (from alembic>=1.2->prefect-server==2022.9.23+15.g356da2d.dirty) (1.4.42)
Requirement already satisfied: Mako in /opt/homebrew/lib/python3.10/site-packages (from alembic>=1.2->prefect-server==2022.9.23+15.g356da2d.dirty) (1.2.3)
Requirement already satisfied: typing-extensions>=3.6.0 in /opt/homebrew/lib/python3.10/site-packages (from ariadne>=0.8.0->prefect-server==2022.9.23+15.g356da2d.dirty) (4.4.0)
Collecting ariadne>=0.8.0
  Using cached ariadne-0.16.0-py3-none-any.whl (52 kB)
  Using cached ariadne-0.15.1-py3-none-any.whl (45 kB)
  Using cached ariadne-0.15.0-py3-none-any.whl (45 kB)
  Using cached ariadne-0.14.1-py3-none-any.whl (44 kB)
Collecting starlette>=0.13
  Using cached starlette-0.17.1-py3-none-any.whl (58 kB)
Collecting ariadne>=0.8.0
  Using cached ariadne-0.14.0-py3-none-any.whl (54 kB)
  Using cached ariadne-0.13.0-py3-none-any.whl (52 kB)
  Using cached ariadne-0.12.0-py3-none-any.whl (51 kB)
Collecting starlette>=0.13
  Using cached starlette-0.13.8-py3-none-any.whl (60 kB)
Requirement already satisfied: requests>=2.26.0 in /opt/homebrew/lib/python3.10/site-packages (from docker>=3.4->prefect-server==2022.9.23+15.g356da2d.dirty) (2.28.1)
Requirement already satisfied: websocket-client>=0.32.0 in /opt/homebrew/lib/python3.10/site-packages (from docker>=3.4->prefect-server==2022.9.23+15.g356da2d.dirty) (1.4.1)
Requirement already satisfied: rfc3986[idna2008]<2,>=1.3 in /opt/homebrew/lib/python3.10/site-packages (from httpx>=0.13.0->prefect-server==2022.9.23+15.g356da2d.dirty) (1.5.0)
Requirement already satisfied: httpcore<0.16.0,>=0.15.0 in /opt/homebrew/lib/python3.10/site-packages (from httpx>=0.13.0->prefect-server==2022.9.23+15.g356da2d.dirty) (0.15.0)
Requirement already satisfied: certifi in /opt/homebrew/lib/python3.10/site-packages (from httpx>=0.13.0->prefect-server==2022.9.23+15.g356da2d.dirty) (2022.9.24)
Requirement already satisfied: sniffio in /opt/homebrew/lib/python3.10/site-packages (from httpx>=0.13.0->prefect-server==2022.9.23+15.g356da2d.dirty) (1.3.0)
Requirement already satisfied: pyparsing!=3.0.5,>=2.0.2 in /Users/bjarne/Library/Python/3.10/lib/python/site-packages (from packaging>=20.0->prefect-server==2022.9.23+15.g356da2d.dirty) (3.0.9)
Requirement already satisfied: cloudpickle>=1.3.0 in /opt/homebrew/lib/python3.10/site-packages (from prefect<2.0.0,>=1.0.0->prefect-server==2022.9.23+15.g356da2d.dirty) (2.2.0)
Collecting mypy-extensions>=0.4.0
  Using cached mypy_extensions-0.4.3-py2.py3-none-any.whl (4.5 kB)
Collecting distributed>=2.17.0
  Using cached distributed-2022.10.0-py3-none-any.whl (908 kB)
Collecting importlib-resources>=3.0.0
  Using cached importlib_resources-5.10.0-py3-none-any.whl (34 kB)
Requirement already satisfied: python-dateutil>=2.7.0 in /opt/homebrew/lib/python3.10/site-packages (from prefect<2.0.0,>=1.0.0->prefect-server==2022.9.23+15.g356da2d.dirty) (2.8.2)
Collecting python-box>=5.1.0
  Using cached python_box-6.0.2-py3-none-any.whl (26 kB)
Requirement already satisfied: pendulum>=2.0.4 in /opt/homebrew/lib/python3.10/site-packages (from prefect<2.0.0,>=1.0.0->prefect-server==2022.9.23+15.g356da2d.dirty) (2.1.2)
Collecting marshmallow>=3.0.0b19
  Using cached marshmallow-3.18.0-py3-none-any.whl (48 kB)
Collecting msgpack>=0.6.0
  Using cached msgpack-1.0.4-cp310-cp310-macosx_11_0_arm64.whl (69 kB)
Requirement already satisfied: pytz>=2018.7 in /opt/homebrew/lib/python3.10/site-packages (from prefect<2.0.0,>=1.0.0->prefect-server==2022.9.23+15.g356da2d.dirty) (2022.5)
Collecting dask>=2021.06.0
  Using cached dask-2022.10.0-py3-none-any.whl (1.1 MB)
Collecting marshmallow-oneofschema>=2.0.0b2
  Using cached marshmallow_oneofschema-3.0.1-py2.py3-none-any.whl (5.8 kB)
Requirement already satisfied: croniter>=0.3.24 in /opt/homebrew/lib/python3.10/site-packages (from prefect<2.0.0,>=1.0.0->prefect-server==2022.9.23+15.g356da2d.dirty) (1.3.7)
Collecting tabulate>=0.8.0
  Using cached tabulate-0.9.0-py3-none-any.whl (35 kB)
Requirement already satisfied: text-unidecode>=1.3 in /opt/homebrew/lib/python3.10/site-packages (from python-slugify>=1.2->prefect-server==2022.9.23+15.g356da2d.dirty) (1.3)
Requirement already satisfied: h11>=0.8 in /opt/homebrew/lib/python3.10/site-packages (from uvicorn>=0.11.4->prefect-server==2022.9.23+15.g356da2d.dirty) (0.12.0)
Collecting toolz>=0.8.2
  Using cached toolz-0.12.0-py3-none-any.whl (55 kB)
Requirement already satisfied: fsspec>=0.6.0 in /opt/homebrew/lib/python3.10/site-packages (from dask>=2021.06.0->prefect<2.0.0,>=1.0.0->prefect-server==2022.9.23+15.g356da2d.dirty) (2022.10.0)
Collecting partd>=0.3.10
  Using cached partd-1.3.0-py3-none-any.whl (18 kB)
Collecting tblib>=1.6.0
  Using cached tblib-1.7.0-py2.py3-none-any.whl (12 kB)
Collecting sortedcontainers!=2.0.0,!=2.0.1
  Using cached sortedcontainers-2.4.0-py2.py3-none-any.whl (29 kB)
Collecting tornado<6.2,>=6.0.3
  Using cached tornado-6.1.tar.gz (497 kB)
  Preparing metadata (setup.py) ... done
Requirement already satisfied: psutil>=5.0 in /Users/bjarne/Library/Python/3.10/lib/python/site-packages (from distributed>=2.17.0->prefect<2.0.0,>=1.0.0->prefect-server==2022.9.23+15.g356da2d.dirty) (5.9.2)
Collecting locket>=1.0.0
  Using cached locket-1.0.0-py2.py3-none-any.whl (4.4 kB)
Collecting zict>=0.1.3
  Using cached zict-2.2.0-py2.py3-none-any.whl (23 kB)
Requirement already satisfied: jinja2 in /Users/bjarne/Library/Python/3.10/lib/python/site-packages (from distributed>=2.17.0->prefect<2.0.0,>=1.0.0->prefect-server==2022.9.23+15.g356da2d.dirty) (3.1.2)
Requirement already satisfied: anyio==3.* in /opt/homebrew/lib/python3.10/site-packages (from httpcore<0.16.0,>=0.15.0->httpx>=0.13.0->prefect-server==2022.9.23+15.g356da2d.dirty) (3.6.2)
Requirement already satisfied: idna>=2.8 in /opt/homebrew/lib/python3.10/site-packages (from anyio==3.*->httpcore<0.16.0,>=0.15.0->httpx>=0.13.0->prefect-server==2022.9.23+15.g356da2d.dirty) (3.4)
Requirement already satisfied: pytzdata>=2020.1 in /opt/homebrew/lib/python3.10/site-packages (from pendulum>=2.0.4->prefect<2.0.0,>=1.0.0->prefect-server==2022.9.23+15.g356da2d.dirty) (2020.1)
Requirement already satisfied: six>=1.5 in /opt/homebrew/lib/python3.10/site-packages (from python-dateutil>=2.7.0->prefect<2.0.0,>=1.0.0->prefect-server==2022.9.23+15.g356da2d.dirty) (1.16.0)
Requirement already satisfied: charset-normalizer<3,>=2 in /opt/homebrew/lib/python3.10/site-packages (from requests>=2.26.0->docker>=3.4->prefect-server==2022.9.23+15.g356da2d.dirty) (2.1.1)
Requirement already satisfied: MarkupSafe>=0.9.2 in /Users/bjarne/Library/Python/3.10/lib/python/site-packages (from Mako->alembic>=1.2->prefect-server==2022.9.23+15.g356da2d.dirty) (2.1.1)
Collecting heapdict
  Using cached HeapDict-1.0.1-py3-none-any.whl (3.9 kB)
Building wheels for collected packages: prefect-server, json-log-formatter, tornado
  Building editable for prefect-server (pyproject.toml) ... done
  Created wheel for prefect-server: filename=prefect_server-2022.9.23+15.g356da2d.dirty-0.editable-py3-none-any.whl size=9198 sha256=66e03134fb1d2a4599c00827e1d9d6d72a1e6f5e39ed1af070d1279b51aabee5
  Stored in directory: /private/var/folders/6l/88g0f0s92x7bfrlzntsdljnw0000gn/T/pip-ephem-wheel-cache-0rkkssav/wheels/35/5d/5f/5694a88791dad3f2e2951f8d30bca6dd0c7161d6975c6c9769
  Building wheel for json-log-formatter (setup.py) ... done
  Created wheel for json-log-formatter: filename=JSON_log_formatter-0.5.1-py3-none-any.whl size=5075 sha256=8be9f559a332868f3201dc1469e0e2c0a74b508ea0529064d0fcbc82cf96f29c
  Stored in directory: /Users/bjarne/Library/Caches/pip/wheels/fd/44/02/86fb37c85d18ed2d2453630a13ff00b5ede92725a3ecd98526
  Building wheel for tornado (setup.py) ... done
  Created wheel for tornado: filename=tornado-6.1-cp310-cp310-macosx_12_0_arm64.whl size=416700 sha256=ef2463725c7fb484746c041f992a920947991ede0683ef31a5b54453f34665b5
  Stored in directory: /Users/bjarne/Library/Caches/pip/wheels/80/32/8d/21cf0fa6ee4e083f6530e5b83dfdfa9489a3890d320803f4c7
Successfully built prefect-server json-log-formatter tornado
Installing collected packages: sortedcontainers, mypy-extensions, msgpack, json-log-formatter, heapdict, zict, tornado, toolz, tblib, tabulate, starlette, python-box, psycopg2-binary, locket, importlib-resources, graphql-core, partd, marshmallow, ariadne, marshmallow-oneofschema, dask, distributed, prefect, prefect-server
  Attempting uninstall: starlette
    Found existing installation: starlette 0.20.4
    Uninstalling starlette-0.20.4:
      Successfully uninstalled starlette-0.20.4
  Attempting uninstall: prefect
    Found existing installation: prefect 2.6.4
    Uninstalling prefect-2.6.4:
      Successfully uninstalled prefect-2.6.4
ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
jupyter-client 7.3.5 requires tornado>=6.2, but you have tornado 6.1 which is incompatible.
fastapi 0.85.1 requires starlette==0.20.4, but you have starlette 0.13.8 which is incompatible.
Successfully installed ariadne-0.12.0 dask-2022.10.0 distributed-2022.10.0 graphql-core-3.0.6 heapdict-1.0.1 importlib-resources-5.10.0 json-log-formatter-0.5.1 locket-1.0.0 marshmallow-3.18.0 marshmallow-oneofschema-3.0.1 msgpack-1.0.4 mypy-extensions-0.4.3 partd-1.3.0 prefect-1.4.0 prefect-server-2022.9.23+15.g356da2d.dirty psycopg2-binary-2.9.5 python-box-6.0.2 sortedcontainers-2.4.0 starlette-0.13.8 tabulate-0.9.0 tblib-1.7.0 toolz-0.12.0 tornado-6.1 zict-2.2.0

[notice] A new release of pip available: 22.2.2 -> 22.3
[notice] To update, run: python3.10 -m pip install --upgrade pip

After that, I can't call prefect --version anymore because it got uninstalled.
I can call prefect version though which results in:

1.4.0

I can get the server running afterwards but it seems like it is running on the first version.
From remote clients I can register agents but only if Prefect 1 is installed.

What am I missing? Is this a bug or is the installation planned to behave like that?
Many thanks!

[zanieb]

Hi! The server is bundled with Prefect 2. The separate prefect-server package is for Prefect 1. The command you're looking for is prefect orion start. See https://docs.prefect.io/tutorials/deployments/#run-a-prefect-orion-server

[bjarneschroeder]

Ohh wow super basic mistake on my behalf. Thank you so much for the fast response! ❤️