diff --git a/pkgs/by-name/ad/adept/package.nix b/pkgs/by-name/ad/adept/package.nix
new file mode 100644
index 000000000000..6eb215650d53
--- /dev/null
+++ b/pkgs/by-name/ad/adept/package.nix
@@ -0,0 +1,35 @@
+{
+  lib,
+  autoconf,
+  automake,
+  stdenv,
+  fetchurl,
+  pkg-config,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "adept";
+  version = "2.1.1";
+
+  src = fetchurl {
+    url = "https://www.met.reading.ac.uk/clouds/adept/adept-${finalAttrs.version}.tar.gz";
+    hash = "sha256-DO8zToLfRSbTdhvdgxmmPnWCyWsvHMiDkXKQGLSCXEc=";
+  };
+
+  nativeBuildInputs = [
+    autoconf
+    automake
+    pkg-config
+  ];
+
+  doCheck = true;
+
+  meta = {
+    description = "Combined array and automatic differentiation library in C++";
+    homepage = "https://www.met.reading.ac.uk/clouds/adept/";
+    license = lib.licenses.asl20;
+    maintainers = with lib.maintainers; [
+      athas
+    ];
+  };
+})