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nixpkgs/pkgs/tools/networking/ntp/default.nix

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Nix

{ stdenv, fetchurl, autoreconfHook, libcap ? null, openssl ? null }:
assert stdenv.isLinux -> libcap != null;
stdenv.mkDerivation rec {
name = "ntp-4.2.8p8";
src = fetchurl {
url = "http://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-4.2/${name}.tar.gz";
sha256 = "1vlpgd0dk2wkpmmf869sfxi8f46sfnmjgk51vl8n6vj5y2sx1cra";
};
configureFlags = [
"--sysconfdir=/etc"
"--localstatedir=/var"
"--enable-ignore-dns-errors"
] ++ stdenv.lib.optional (libcap != null) "--enable-linuxcaps";
nativeBuildInputs = [ autoreconfHook ];
buildInputs = [ libcap openssl ];
hardeningEnable = [ "pie" ];
postInstall = ''
rm -rf $out/share/doc
'';
meta = {
homepage = http://www.ntp.org/;
description = "An implementation of the Network Time Protocol";
maintainers = [ stdenv.lib.maintainers.eelco ];
platforms = stdenv.lib.platforms.linux;
};
}