Create goal card and 4 prerequisite cards for building authentik from a
custom Nix derivation instead of using pkgs.authentik from nixpkgs. This
removes the dependency on the nixpkgs packaging timeline and gives full
version control over authentik releases.
Chain: mikado/authentik-source-build
Leaf nodes: authentik-api-client-generation, authentik-python-backend-derivation
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
