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29027fd1e1
Using pkgs.lib on the spine of module evaluation is problematic because the pkgs argument depends on the result of module evaluation. To prevent an infinite recursion, pkgs and some of the modules are evaluated twice, which is inefficient. Using ‘with lib’ prevents this problem.
35 lines
713 B
Nix
35 lines
713 B
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let kernelVersion = config.boot.kernelPackages.kernel.version; in
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{
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###### interface
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options = {
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networking.enableB43Firmware = mkOption {
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default = false;
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type = types.bool;
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description = ''
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Turn on this option if you want firmware for the NICs supported by the b43 module.
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'';
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};
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};
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###### implementation
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config = mkIf config.networking.enableB43Firmware {
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assertions = singleton
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{ assertion = lessThan 0 (builtins.compareVersions kernelVersion "3.2");
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message = "b43 firmware for kernels older than 3.2 not packaged yet!";
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};
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hardware.firmware = [ pkgs.b43Firmware_5_1_138 ];
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};
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}
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