argunix pre-flight: no connected builder satisfies this derivation's requiredSystemFeatures. Failing fast instead of waiting for nix's remote-build scheduler to give up. attribute: packages.x86_64-linux.test-cuda-nvidia derivation: /nix/store/9nl3v0inr652nqz1n8kxdgvm0jrbv8sg-vm-test-run-saxpy-cuda-test.drv required (system, features): (x86_64-linux, ["cuda", "kvm", "nixos-test", "uid-range"]) connected builders: - eu: systems=["x86_64-linux", "aarch64-linux", "i686-linux", "x86_64-windows"] features=["benchmark", "big-parallel", "kvm", "nixos-test", "uid-range"] max_jobs=12 state=Active - us: systems=["x86_64-linux", "aarch64-linux", "i686-linux", "x86_64-windows"] features=["benchmark", "big-parallel", "kvm", "nixos-test", "uid-range"] max_jobs=12 state=Active - work: systems=["x86_64-linux", "aarch64-linux", "i686-linux"] features=["benchmark", "big-parallel", "devnet", "kvm", "nixos-test", "uid-range"] max_jobs=16 state=Active Fix one of: 1. Add the missing feature(s) to a builder's nix.settings.system-features. 2. Add a builder host that natively satisfies the feature. 3. Drop the requirement from the derivation if it isn't actually needed.