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path: root/pkgs/tools/networking/unbound/default.nix
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{ stdenv, fetchurl, openssl, nettle, expat, libevent, dns-root-data }:

stdenv.mkDerivation rec {
  pname = "unbound";
  version = "1.10.1";

  src = fetchurl {
    url = "https://unbound.net/downloads/${pname}-${version}.tar.gz";
    sha256 = "0dnmh9jjh2v274f0hl31bgv40pl77mmfgky8bkqr5kvi3b17fdmp";
  };

  # https://github.com/NLnetLabs/unbound/pull/90
  postPatch = ''
    substituteInPlace validator/val_secalgo.c \
      --replace '&nettle_secp_256r1' 'nettle_get_secp_256r1()' \
      --replace '&nettle_secp_384r1' 'nettle_get_secp_384r1()'
  '';

  outputs = [ "out" "lib" "man" ]; # "dev" would only split ~20 kB

  buildInputs = [ openssl nettle expat libevent ];

  configureFlags = [
    "--with-ssl=${openssl.dev}"
    "--with-libexpat=${expat.dev}"
    "--with-libevent=${libevent.dev}"
    "--localstatedir=/var"
    "--sysconfdir=/etc"
    "--sbindir=\${out}/bin"
    "--with-rootkey-file=${dns-root-data}/root.key"
    "--enable-pie"
    "--enable-relro-now"
  ];

  installFlags = [ "configfile=\${out}/etc/unbound/unbound.conf" ];

  postInstall = ''
    make unbound-event-install
  '';

  preFixup = stdenv.lib.optionalString (stdenv.isLinux && !stdenv.hostPlatform.isMusl) # XXX: revisit
    # Build libunbound again, but only against nettle instead of openssl.
    # This avoids gnutls.out -> unbound.lib -> openssl.out.
    # There was some problem with this on Darwin; let's not complicate non-Linux.
    ''
      configureFlags="$configureFlags --with-nettle=${nettle.dev} --with-libunbound-only"
      configurePhase
      buildPhase
      installPhase
    ''
    # get rid of runtime dependencies on $dev outputs
  + ''substituteInPlace "$lib/lib/libunbound.la" ''
    + stdenv.lib.concatMapStrings
      (pkg: " --replace '-L${pkg.dev}/lib' '-L${pkg.out}/lib' --replace '-R${pkg.dev}/lib' '-R${pkg.out}/lib'")
      buildInputs;

  meta = with stdenv.lib; {
    description = "Validating, recursive, and caching DNS resolver";
    license = licenses.bsd3;
    homepage = "https://www.unbound.net";
    maintainers = with maintainers; [ ehmry fpletz globin ];
    platforms = stdenv.lib.platforms.unix;
  };
}