core/pkgs/build-support/fetchsvnssh/default.nix

{ stdenvNoCC, subversion, sshSupport ? true, openssh ? null, expect }:
{ username, password, url, rev ? "HEAD", sha256 ? "" }:

stdenvNoCC.mkDerivation {
  name = "svn-export-ssh";
  builder = ./builder.sh;
  nativeBuildInputs = [ subversion expect ];

  outputHashAlgo = "sha256";
  outputHashMode = "recursive";
  outputHash = sha256;

  sshSubversion = ./sshsubversion.exp;

  inherit username password url rev sshSupport openssh;
}