What I'm working with:

• CentOS Linux 7 (Core)
• Python 3.9.10
• pip 22.0.3
• Using virtualenv where pip list is

Package    Version
---------- -------
pip        22.0.3
setuptools 60.9.3
wheel      0.37.1

How I'm trying to install psycopg (tried sudo and/or pip3 on each too):

1:

pip install psycopg[binary]

Collecting psycopg[binary]
  Using cached psycopg-3.0.9-py3-none-any.whl (141 kB)
  Using cached psycopg-3.0.8-py3-none-any.whl (142 kB)
  Using cached psycopg-3.0.7-py3-none-any.whl (141 kB)
  Using cached psycopg-3.0.6-py3-none-any.whl (141 kB)
  Using cached psycopg-3.0.5-py3-none-any.whl (141 kB)
  Using cached psycopg-3.0.4-py3-none-any.whl (140 kB)
  Using cached psycopg-3.0.3-py3-none-any.whl (140 kB)
  Using cached psycopg-3.0.2-py3-none-any.whl (140 kB)
  Using cached psycopg-3.0.1-py3-none-any.whl (140 kB)
  Using cached psycopg-3.0-py3-none-any.whl (140 kB)
ERROR: Cannot install psycopg[binary]==3.0, psycopg[binary]==3.0.1, psycopg[binary]==3.0.2, psycopg[binary]==3.0.3, psycopg[binary]==3.0.4, psycopg[binary]==3.0.5, psycopg[binary]==3.0.6, psycopg[binary]==3.0.7, psycopg[binary]==3.0.8 and psycopg[binary]==3.0.9 because these package versions have conflicting dependencies.

The conflict is caused by:
    psycopg[binary] 3.0.9 depends on psycopg-binary==3.0.9; extra == "binary"
    psycopg[binary] 3.0.8 depends on psycopg-binary==3.0.8; extra == "binary"
    psycopg[binary] 3.0.7 depends on psycopg-binary==3.0.7; extra == "binary"
    psycopg[binary] 3.0.6 depends on psycopg-binary==3.0.6; extra == "binary"
    psycopg[binary] 3.0.5 depends on psycopg-binary==3.0.5; extra == "binary"
    psycopg[binary] 3.0.4 depends on psycopg-binary==3.0.4; extra == "binary"
    psycopg[binary] 3.0.3 depends on psycopg-binary==3.0.3; extra == "binary"
    psycopg[binary] 3.0.2 depends on psycopg-binary==3.0.2; extra == "binary"
    psycopg[binary] 3.0.1 depends on psycopg-binary==3.0.1; extra == "binary"
    psycopg[binary] 3.0 depends on psycopg-binary==3.0; extra == "binary"

To fix this you could try to:
1. loosen the range of package versions you've specified
2. remove package versions to allow pip attempt to solve the dependency conflict

ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/topics/dependency-resolution/#dealing-with-dependency-conflicts

2:

pip install psycopg[binary]==3.0.8

Collecting psycopg[binary]==3.0.8
  Using cached psycopg-3.0.8-py3-none-any.whl (142 kB)
ERROR: Could not find a version that satisfies the requirement psycopg-binary==3.0.8; extra == "binary" (from psycopg[binary]) (from versions: none)
ERROR: No matching distribution found for psycopg-binary==3.0.8; extra == "binary"

3:

pip install psycopg-binary

ERROR: Could not find a version that satisfies the requirement psycopg-binary (from versions: none)
ERROR: No matching distribution found for psycopg-binary

Running out of options here, any help would be appreciated. It works on my local machine, but not on EC2.

CodePudding user response：

I use:

pip install psycopg2-binary