Revert "seahub: fix build"
Revert "seahub: fix build"

This reverts commit 2189b95ebf4ddeb7b0397df7de8719f998020d47.

Breaks eval by setting format a second time.

Duplicates b5393c3f78a19da8e56e6a02f48a958e5d6592cb

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs