With Github API: get pr merged commit hash -> compare target branch HEAD ... commit -> get status
nixpkgs-tracker not same as nixpk.gs/pr-tracker, it does not pass any requests through server to get PR status.
Therefore, there is no need to worry about any performance issues.
You could get static files with:
nix build github:ocfox/nixpkgs-tracker
Nixpkgs-Tracker
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