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{ stdenv, fetchurl, cpio, xz, pkgs }:
let
version = "1.43";
dmgRange = "420107885-421933300"; # the whole download is 1.3GB, this cuts it down to 2MB
firmwareIn = "./System/Library/Extensions/AppleCameraInterface.kext/Contents/MacOS/AppleCameraInterface";
firmwareOut = "firmware.bin";
firmwareOffset = "81920";
firmwareSize = "603715";
# separated this here as the script will fail without the 'exit 0'
unpack = pkgs.writeScriptBin "unpack" ''
xzcat -Q $src | cpio --format odc -i -d ${firmwareIn}
exit 0
'';
in
stdenv.mkDerivation {
name = "facetimehd-firmware-${version}";
src = fetchurl {
url = "https://support.apple.com/downloads/DL1849/en_US/osxupd10.11.2.dmg";
sha256 = "1jw6sy9vj27amfak83cs2c7q856y4mk1wix3rl4q10yvd9bl4k9x";
curlOpts = "-r ${dmgRange}";
};
phases = [ "buildPhase" ];
buildInputs = [ cpio xz ];
buildPhase = ''
${unpack}/bin/unpack
dd bs=1 skip=${firmwareOffset} count=${firmwareSize} if=${firmwareIn} of=${firmwareOut}.gz &> /dev/null
mkdir -p $out/lib/firmware/facetimehd
gunzip -c ${firmwareOut}.gz > $out/lib/firmware/facetimehd/${firmwareOut}
'';
meta = with stdenv.lib; {
description = "facetimehd firmware";
homepage = https://support.apple.com/downloads/DL1849;
license = licenses.unfree;
maintainers = [ maintainers.womfoo ];
platforms = platforms.linux;
};
}
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