html_url,issue_url,id,node_id,user,user_label,created_at,updated_at,author_association,body,reactions,issue,issue_label,performed_via_github_app
https://github.com/simonw/datasette/pull/2056#issuecomment-1506485287,https://api.github.com/repos/simonw/datasette/issues/2056,1506485287,IC_kwDOBm6k_c5ZyyQn,3709715,cclauss,2023-04-13T07:29:38Z,2023-04-13T07:41:55Z,NONE,"Ruff (written in Rust, not Python) is a 23MB executable so the time to download and pip install it dwarfs its runtime.

Let's run ruff with and without GitHub Actions pip cache side-by-side to see the relative performance.

Once you approve the workflows below, `ruff_with_cache` should echo `cache-hit = false` but if you rerun that job hopefully it should echo `cache-hit = true`.  That will be the execution time that we are interested to compare.

There are two great problems in computer science: ;-)
1. Naming things
2. Cache invalidation
3. Off-by-one errors

For 2., https://github.com/actions/setup-python#caching-packages-dependencies is vital reading.
Only _exactly pinned requirements_ can be cached.  Currently in `setup.py` the only pinned dependencies are:
1. Sphinx==6.1.3
2. furo==2023.3.27
3. black==23.3.0
4. blacken-docs==1.13.0  # but unpinned elsewhere in `setup.py`

This means that there will be very few cache hits in the current actions.  See the link below to print out cache hits:
https://github.com/actions/setup-python/blob/main/docs/advanced-usage.md#cache-hit

> PyPI uses Fastly's CDN to quickly serve content to end-users, allowing us to minimize our hosting infrastructure and obscure possible downtime. -- https://pypi.org/sponsors

I would be shocked if Fastly does not have beefy CDN nodes in the same datacenters where GitHub Actions run so GHA requests to download `ruff` probably never hit a PyPI server.
","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1661860507,GitHub Action to lint Python code with ruff,
https://github.com/simonw/datasette/pull/2056#issuecomment-1509852821,https://api.github.com/repos/simonw/datasette/issues/2056,1509852821,IC_kwDOBm6k_c5Z_oaV,3709715,cclauss,2023-04-15T14:24:45Z,2023-04-15T14:24:45Z,NONE,Status?,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1661860507,GitHub Action to lint Python code with ruff,