Hi nicolas, there is a patch at Enable cross compilation on buildGoPackage by dingxiangfei2009 · Pull Request #63603 · NixOS/nixpkgs · GitHub pending review, which will enable you to cross-compile cni-plugins to ARM. In addition, cni-plugins: add version pin by dingxiangfei2009 · Pull Request #63604 · NixOS/nixpkgs · GitHub will relax the platform constraint to allow builds to linux.
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