diff --git a/pkgs/by-name/fa/fakedir/package.nix b/pkgs/by-name/fa/fakedir/package.nix
new file mode 100644
index 000000000000..4103cc9c7133
--- /dev/null
+++ b/pkgs/by-name/fa/fakedir/package.nix
@@ -0,0 +1,40 @@
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  nix-update-script,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "fakedir";
+  version = "0-unstable-2025-12-02";
+
+  src = fetchFromGitHub {
+    owner = "nixie-dev";
+    repo = "fakedir";
+    rev = "82bfac1f58a76f56fc4ef928982f507e01c552a5";
+    hash = "sha256-wPseLfbRffX0Pr4TxJh59cmuY1OEfSDTvM2KrORafKs=";
+  };
+
+  CFLAGS = "-Ofast -DSTRIP_DEBUG";
+
+  installPhase = ''
+    install -Dm755 libfakedir.dylib $out/lib/libfakedir.dylib
+  '';
+
+  passthru.updateScript = nix-update-script {
+    extraArgs = [
+      "--version=branch"
+      "--version-regex=(0-unstable-.*)"
+    ];
+  };
+
+  meta = {
+    description = "Substitutes a directory elsewhere on macOS by replacing system calls";
+    homepage = "https://github.com/nixie-dev/fakedir";
+    license = lib.licenses.unfree;
+    maintainers = with lib.maintainers; [ eveeifyeve ];
+    mainProgram = "fakedir";
+    platforms = lib.platforms.darwin;
+  };
+})