## TL;DR

On Windows 10 with a conda Python 3.8 env, pip install whylogs==0.4.8 fails with ERROR: No matching distribution found for whylabs-datasketches==2.2.0b1. The protobuf import error was a red herring from the stale 0.1.5 install.

## Steps

1. On Windows 10 with a conda Python 3.8 env, `pip install whylogs==0.4.8` fails with `ERROR: No matching distribution found for whylabs-datasketches==2.2.0b1`. The same install works on Linux. The protobuf import error was a red herring from the stale 0.1.5 install.

2. The root cause was that `whylabs-datasketches` had no prebuilt wheel for Windows, so pip could not resolve the dependency on Windows while Linux installed fine. The maintainers published Windows binaries for whylabs-datasketches 2.2.0b1 (2021-08-24) and closed the issue. The workaround before that was to run whylogs under WSL. If you hit this on an old pin, upgrade whylabs-datasketches.

## When to use

You are seeing this: The maintainers published Windows binaries for whylabs-datasketches 2.2.0b1 (2021-08-24) and closed the issue. Use this skill when you run into "pip install whylogs fails on Windows: No matching distribution for whylabs-datasketches".

## When not to use

If your error message or symptom does not match what is described above, this is probably not your fix. Search for your exact error text instead of forcing this one to fit.

## Versions

Versions mentioned in the source: whylogs 0.4.8, stale 0.1.5. If you are on something much newer or older, the details may have shifted.

## Why this happens

The original report does not dig into a root cause. It documents the symptom and the fix that resolved it.