return !toolChain.meets(ToolChainRequirement.SWIFTC);
    }

    private static class ToolChainExecution extends Execution {
        private final AvailableToolChains.ToolChainCandidate toolChain;

        public ToolChainExecution(AvailableToolChains.ToolChainCandidate toolChain) {
            this.toolChain = toolChain;
        }

        @Override