diff --git a/pkgs/by-name/de/dealii/package.nix b/pkgs/by-name/de/dealii/package.nix
new file mode 100644
index 000000000000..aa3af4742cfc
--- /dev/null
+++ b/pkgs/by-name/de/dealii/package.nix
@@ -0,0 +1,37 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  cmake,
+  boost,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "dealii";
+  version = "9.7.1";
+
+  src = fetchFromGitHub {
+    owner = "dealii";
+    repo = "dealii";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-hy7Z9DUcSv/k5UU5TOfYzCIEiKXBZZEUrRnJ7jN1gus=";
+  };
+
+  nativeBuildInputs = [ cmake ];
+
+  buildInputs = [ boost ];
+
+  meta = {
+    homepage = "https://dealii.org/";
+    description = "C++ software library supporting the creation of finite element codes";
+    longDescription = ''
+      deal.II is a C++ program library targeted at the computational solution of
+      partial differential equations using adaptive finite elements.
+      It uses state-of-the-art programming techniques to offer you a modern interface
+      to the complex data structures and algorithms required.
+    '';
+    license = lib.licenses.lgpl21Plus;
+    maintainers = with lib.maintainers; [ neural-blade ];
+    platforms = lib.platforms.unix;
+  };
+})