diff --git a/pkgs/by-name/di/din/package.nix b/pkgs/by-name/di/din/package.nix
new file mode 100644
index 000000000000..826d3ac9935a
--- /dev/null
+++ b/pkgs/by-name/di/din/package.nix
@@ -0,0 +1,120 @@
+{
+  lib,
+  stdenv,
+  fetchurl,
+  pkg-config,
+  autoreconfHook,
+  libsndfile,
+  freeglut,
+  libGL,
+  libGLU,
+  libjpeg,
+  SDL,
+  tcl,
+
+  # Audio backend — exactly one must be selected.
+  # ALSA is the upstream-recommended Linux backend; JACK is used elsewhere.
+  jackSupport ? !stdenv.hostPlatform.isLinux,
+  jack2,
+  alsaSupport ? stdenv.hostPlatform.isLinux,
+  alsa-lib,
+}:
+
+assert lib.assertMsg (
+  lib.count (x: x) [
+    jackSupport
+    alsaSupport
+  ] == 1
+) "din: exactly one audio backend must be selected (jackSupport or alsaSupport)";
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "din";
+  version = "64.2";
+
+  __structuredAttrs = true;
+  strictDeps = true;
+
+  # Darwin binary should NOT be available on the public cache; always build from source.
+  # https://dinisnoise.org/README/
+  allowSubstitutes = !stdenv.hostPlatform.isDarwin;
+
+  src = fetchurl {
+    url = "https://dinisnoise.org/files/din-${finalAttrs.version}.tar.gz";
+    hash = "sha256-YpaGOAVJmUMDkqvu9+fzW1RbNNSRO2Id8zg8DIblGXE=";
+  };
+
+  nativeBuildInputs = [
+    pkg-config
+    autoreconfHook
+  ];
+
+  buildInputs = [
+    libsndfile
+    libjpeg
+    SDL
+    tcl
+  ]
+  ++ lib.optionals stdenv.hostPlatform.isLinux [
+    freeglut
+    libGL
+    libGLU
+  ]
+  ++ lib.optionals jackSupport [ jack2 ]
+  ++ lib.optionals alsaSupport [ alsa-lib ];
+
+  # Makefile.am hard-codes /usr/include/tcl8.6 and unconditionally links
+  # -lasound. Strip both so Nix controls all flags via configureFlags.
+  # On Darwin, also strip -lGL and -lrt since OpenGL is provided as a framework
+  # and real-time extensions are built into the system library.
+  preConfigure = ''
+    substituteInPlace src/Makefile.am \
+      --replace-fail "-I /usr/include/tcl8.6" "-I${tcl}/include" \
+      --replace-fail " -lasound" ""
+  ''
+  + lib.optionalString stdenv.hostPlatform.isDarwin ''
+    substituteInPlace src/Makefile.am \
+      --replace-fail " -lGL" "" \
+      --replace-fail " -lrt" ""
+  '';
+
+  # Pass the backend macro and linker flags via configure, matching the
+  # upstream build scripts (o3-alsa / o3-jack).
+  # On Darwin, add -framework flags for OpenGL, GLUT, and Cocoa (needed by SDLmain),
+  # silence deprecation warnings, and link SDLmain (provides the main() wrapper for SDL apps on macOS).
+  configureFlags =
+    (
+      if jackSupport then
+        [
+          "CXXFLAGS=-D__UNIX_JACK__${lib.optionalString stdenv.hostPlatform.isDarwin " -DGL_SILENCE_DEPRECATION"}"
+        ]
+      else
+        [
+          "CXXFLAGS=-D__LINUX_ALSA__${lib.optionalString stdenv.hostPlatform.isDarwin " -DGL_SILENCE_DEPRECATION"}"
+        ]
+    )
+    ++ lib.optional jackSupport "LIBS=-ljack"
+    ++ lib.optional alsaSupport "LIBS=-lasound"
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [
+      "LDFLAGS=-framework OpenGL -framework GLUT -framework Cocoa -lSDLmain"
+    ];
+
+  enableParallelBuilding = true;
+
+  meta = {
+    description = "Open source cross-platform sound synthesizer";
+    longDescription = ''
+      DIN Is Noise is a program for making sound, music and noise. Use bezier
+      curves to edit waveforms, envelopes, modulators and FX components; use
+      the keyboard (computer and MIDI) to trigger notes (or noise), use the
+      mouse to sound like the theremin, create drones on microtones, launch,
+      orbit and drag them around; bounce balls on walls to trigger notes in a
+      mondrian inspired drawing and also make binaural beats. Supports MIDI
+      input and scripting through TCL.
+    '';
+    homepage = "https://dinisnoise.org/";
+    license = lib.licenses.gpl2Plus;
+    maintainers = with lib.maintainers; [ fraggerfox ];
+    platforms = lib.platforms.linux ++ lib.platforms.darwin;
+    mainProgram = "din";
+  };
+})