diff --git a/pkgs/by-name/dt/dtcmp/package.nix b/pkgs/by-name/dt/dtcmp/package.nix
new file mode 100644
index 000000000000..cd8f54e25d31
--- /dev/null
+++ b/pkgs/by-name/dt/dtcmp/package.nix
@@ -0,0 +1,30 @@
+{ lib, stdenv, fetchFromGitHub, autoreconfHook, pkg-config, mpi, lwgrp }:
+
+stdenv.mkDerivation rec {
+  pname = "dtcmp";
+  version = "1.1.5";
+
+  src = fetchFromGitHub {
+    owner = "LLNL";
+    repo = "dtcmp";
+    rev = "v${version}";
+    hash = "sha256-Dc+c8JCc5D23CtpwiWkHCqngywEZXw7cYsRiSYiQdWk=";
+  };
+
+  outputs = [ "out" "dev" ];
+
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
+  buildInputs = [ lwgrp ];
+
+  configureFlags = [ "--with-lwgrp=${lib.getDev lwgrp}" ];
+
+  propagatedBuildInputs = [ mpi ];
+
+  meta = with lib; {
+    description = "MPI datatype comparison library";
+    homepage = "https://github.com/LLNL/dtcmp";
+    platforms = platforms.linux;
+    license = licenses.bsd3;
+    maintainers = [ maintainers.markuskowa ];
+  };
+}