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UK Online Safety Act Blocks Nixpkgs Package Downloads from repo.or.cz

By

RGBCube

7mo ago· 6 min readenCode

Summary

The article reports a technical issue where the fetchFromRepoOrCz function in Nixpkgs cannot download source packages from repo.or.cz for UK-based build machines due to the site blocking connections from the UK. This blocking is attributed to the Online Safety Act, causing build failures for packages like tinycc, cdimgtools, and docutils. The issue affects Nixpkgs version 25.05 and redirects UK requests to a blocked page, preventing source downloads and breaking builds.

Key quotes

· 3 pulled
The fetchFromRepoOrCz function in pkgs/build-support/fetchrepoorcz/default.nix downloads sources from https://repo.or.cz/
Unfortunately, the site blocks connections from the UK due to the Online Safety act and redirects all requests to https://repo.or.cz/uk-blocked.html
I noticed this while trying to build docutils from a UK-based build machine
Snippet from the RSS feed
Nixpkgs version Stable (25.05) Steps to reproduce The fetchFromRepoOrCz function in pkgs/build-support/fetchrepoorcz/default.nix downloads sources from https://repo.or.cz/ Unfortunately, the site b...

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