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path: root/pkgs/tools/networking/dropbear/default.nix
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{ stdenv, fetchurl, zlib, enableStatic ? false,
sftpPath ? "/var/run/current-system/sw/libexec/sftp-server" }:

stdenv.mkDerivation rec {
  name = "dropbear-2015.71";

  src = fetchurl {
    url = "http://matt.ucc.asn.au/dropbear/releases/${name}.tar.bz2";
    sha256 = "1bw3lzmisn6gs6zy9vcqbfnicl437ydskqcayklpw60fkhb18qip";
  };

  dontDisableStatic = enableStatic;

  configureFlags = stdenv.lib.optional enableStatic "LDFLAGS=-static";

  CFLAGS = "-DSFTPSERVER_PATH=\\\"${sftpPath}\\\"";

  # http://www.gnu.org/software/make/manual/html_node/Libraries_002fSearch.html
  preConfigure = ''
    makeFlags=VPATH=`cat $NIX_CC/nix-support/orig-libc`/lib
  '';

  crossAttrs = {
    # This works for uclibc, at least.
    preConfigure = ''
      makeFlags=VPATH=`cat ${stdenv.ccCross}/nix-support/orig-libc`/lib
    '';
  };

  patches = [
    # Allow sessions to inherit the PATH from the parent dropbear.
    # Otherwise they only get the usual /bin:/usr/bin kind of PATH
    ./pass-path.patch
  ];

  buildInputs = [ zlib ];

  meta = with stdenv.lib; {
    homepage = http://matt.ucc.asn.au/dropbear/dropbear.html;
    description = "An small footprint implementation of the SSH 2 protocol";
    license = licenses.mit;
    maintainers = with maintainers; [ abbradar ];
    platforms = platforms.unix;
  };
}