minimal ntpsec file for nixpkgs

fix-tests-nixos.patch

diff --git a/tests/libntp/decodenetnum.c b/tests/libntp/decodenetnum.c
index a681e4f73..0f1257241 100644
--- a/tests/libntp/decodenetnum.c
+++ b/tests/libntp/decodenetnum.c
@@ -17,6 +17,7 @@ TEST_TEAR_DOWN(decodenetnum) {}
 
 
 TEST(decodenetnum, Services) {
+	TEST_IGNORE_MESSAGE("/etc/services doesn't exist in the build sandbox, resolving for \"ntp\" will fail");
 	struct addrinfo *res;
 	int ret;
 
@@ -60,6 +61,7 @@ TEST(decodenetnum, IPv4AddressWithPort) {
 
 /* test for named port */
 TEST(decodenetnum, IPv4AddressWithPort2) {
+	TEST_IGNORE_MESSAGE("/etc/services doesn't exist in the build sandbox, resolving for \"ntp\" will fail");
 	const char *str = "192.168.2.2:ntp";
 	sockaddr_u actual;
         int ret;

ntpsec.nix

{
  stdenv,
  wafHook,
  fetchFromGitLab,
  python3,
  m4,
  bison,
  openssl,
}:
stdenv.mkDerivation (finalAttrs: {
  pname = "ntpsec";
  version = "1.2.4";
  
  src = fetchFromGitLab {
    owner = "NTPsec";
    repo = "ntpsec";
    tag = "NTPsec_${builtins.replaceStrings ["."] ["_"] finalAttrs.version}";
    hash = "sha256-+lZEoN6iaNYJR63bYDZdogQPyeFAMktCMwPHIfWvQ9Q=";
  };

  nativeBuildInputs = [
    wafHook
    python3
    m4
    bison
    openssl
  ];
  
  patches = [
    ./fix-tests-nixos.patch
  ];
});