catullus: add libcoap

packages/libcoap.nix

@@ -0,0 +1,29 @@
+{ fetchFromGitHub, automake, autoconf, which, libtool, stdenv }:
+stdenv.mkDerivation {
+  name = "libcoap";
+  src = fetchFromGitHub {
+    repo = "libcoap";
+    owner = "obgm";
+    rev = "25863042ae1e95138776f65c772f9fa6ce60495c";
+    fetchSubmodules = true;
+    sha256 = "1nic584jwkndg0w831h0fnxk0zx0apf2lw5md079m3di7zcxs6bw";
+  };
+  buildInputs = [
+    automake
+    autoconf
+    which
+    libtool
+  ];
+  preConfigure = ''./autogen.sh'';
+  configureFlags = [
+    "--disable-documentation"
+    "--disable-shared"
+  ];
+  meta = with stdenv.lib; {
+    homepage = https://github.com/obgm/libcoap;
+    description = "A CoAP (RFC 7252) implementation in C";
+    platforms = platforms.linux;
+    license = licenses.bsd2;
+    maintainers = [ maintainers.kmein ];
+  };
+}