pip can't find tensorflow, amongst other dependencies, even though they exist

[Frontear]

Environment

• pip version: 19.3.1
• Python version: 3.8.1
• OS: Manjaro, with Kernel 54

Description
pip is unable to find a matching version of tensorflow, even though said versions can be found and manually downloaded from pypi. It's becoming quite frustrating to have to manually download the wheel packages and install them.

Expected behavior
pip should be able to find and download the libraries

How to Reproduce

1. Run any shell environment
2. Execute pip install tensorflow==1.15.0
3. Errors will follow, specifically that it can't find the versions, although it can be browsed here

Output

ERROR: Could not find a version that satisfies the requirement tensorflow==1.15.0 (from versions: none)
ERROR: No matching distribution found for tensorflow==1.15.0

Edit

On consideration, my issue is far more likely due to the fact that I'm on a very new version of python, and as such, pip can't find a compatible package for my current version.

[Frontear]

After even further consideration, I realized my amateur mistake. My version of python was simply too new for pip to find any compatible packages. As such, it specified the error.

However, I have a suggestion in that regard. pip should instead explicitly state that the version of python is too new/old, so as to reduce confusion.

Edit

For any future reference, since manjaro would totally break should I try to downgrade python, my only solution was to use pyenv, and install an older version of python.

[uranusjr]

You’re not alone. And the mistake is not amateur at all—even experienced developers need some time to process what’s going on when it happens, the message could use a lot of improvements :)

The issue is most broadly tracked in #4649, with several more specific areas that should be worked on.

[vorburger]

#4228, #6526 and #8831 are more narrow issues than #4649 that this issue could perhaps be duplicated to.

[uranusjr]

I’m going to just close this in favour of #10421. This specific error message comes from the legacy resolver and is not going to be improved upon. The newer issue provides more relevant context toward the issue in its current state, against the current resolver implementation.