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liminix/default.nix

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{ device ? (import devices/gl-ar750.nix)
}:
let
overlay = import ./overlay.nix;
nixpkgs = import <nixpkgs> ( device.system // {overlays = [overlay]; });
inherit (nixpkgs.pkgs) callPackage writeText liminix;
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config = (import ./merge-modules.nix) [
./modules/base.nix
({ lib, ... } : { config = { inherit (device) kernel; }; })
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<liminix-config>
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./modules/s6
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./modules/users.nix
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] nixpkgs.pkgs;
squashfs = liminix.builders.squashfs config.filesystem.contents;
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kernel = callPackage ./kernel {
inherit (config.kernel) config checkedConfig;
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};
outputs = rec {
inherit squashfs kernel;
uimage = kernel.uimage {
inherit (device.boot) loadAddress entryPoint;
inherit (kernel) vmlinux;
};
combined-image = nixpkgs.pkgs.runCommand "firmware.bin" {
nativeBuildInputs = [ nixpkgs.buildPackages.ubootTools ];
} ''
mkdir $out
dd if=${uimage} of=$out/firmware.bin bs=128k conv=sync
dd if=${squashfs} of=$out/firmware.bin bs=128k conv=sync,nocreat,notrunc oflag=append
'';
directory = nixpkgs.pkgs.runCommand "both-kinds" {} ''
mkdir $out
cd $out
ln -s ${squashfs} squashfs
ln -s ${kernel.vmlinux} vmlinux
'';
# this exists so that you can run "nix-store -q --tree" on it and find
# out what's in the image, which is nice if it's unexpectedly huge
manifest = writeText "manifest.json" (builtins.toJSON config.filesystem.contents);
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tftpd = nixpkgs.pkgs.buildPackages.tufted;
};
in {
outputs = outputs // { default = outputs.${device.outputs.default}; };
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# this is just here as a convenience, so that we can get a
# cross-compiling nix-shell for any package we're customizing
inherit (nixpkgs) pkgs;
}