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nixpkgs/pkgs/applications/virtualization/lkl/default.nix

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{ stdenv, fetchFromGitHub, bc, python, fuse, libarchive }:
stdenv.mkDerivation rec {
name = "lkl-${stdenv.lib.substring 0 7 rev}";
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rev = "d74707304d4e4614081ae2a612a833aeb46622b5";
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nativeBuildInputs = [ bc python ];
buildInputs = [ fuse libarchive ];
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src = fetchFromGitHub {
inherit rev;
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owner = "lkl";
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repo = "linux";
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sha256 = "0x1hdjsrj6hfk1sgfw11ihm00fmp6g158sr2q3cgjy2b6jnsr4hp";
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};
# Fix a /usr/bin/env reference in here that breaks sandboxed builds
prePatch = "patchShebangs arch/lkl/scripts";
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installPhase = ''
mkdir -p $out/{bin,lib}
# This tool assumes a different directory structure so let's point it at the right location
cp tools/lkl/bin/lkl-hijack.sh $out/bin
substituteInPlace $out/bin/lkl-hijack.sh --replace '/../' '/../lib'
cp tools/lkl/{cptofs,cpfromfs,fs2tar,lklfuse} $out/bin
cp -r tools/lkl/include $out
cp tools/lkl/liblkl*.{a,so} $out/lib
'';
# We turn off format and fortify because of these errors (fortify implies -O2, which breaks the jitter entropy code):
# fs/xfs/xfs_log_recover.c:2575:3: error: format not a string literal and no format arguments [-Werror=format-security]
# crypto/jitterentropy.c:54:3: error: #error "The CPU Jitter random number generator must not be compiled with optimizations. See documentation. Use the compiler switch -O0 for compiling jitterentropy.c."
hardeningDisable = [ "format" "fortify" ];
makeFlags = "-C tools/lkl";
enableParallelBuilding = true;
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meta = with stdenv.lib; {
description = "LKL (Linux Kernel Library) aims to allow reusing the Linux kernel code as extensively as possible with minimal effort and reduced maintenance overhead";
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homepage = https://github.com/lkl/linux/;
platforms = [ "x86_64-linux" ]; # Darwin probably works too but I haven't tested it
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license = licenses.gpl2;
maintainers = with maintainers; [ copumpkin ];
};
}