diff --git a/pkgs/tools/system/sizes/default.nix b/pkgs/tools/system/sizes/default.nix
new file mode 100644
index 00000000000..9be2a709af5
--- /dev/null
+++ b/pkgs/tools/system/sizes/default.nix
@@ -0,0 +1,21 @@
+{ cabal, cmdargs, deepseq, dlist, lens, parallelIo, regexPosix
+, systemFileio, systemFilepath, text
+}:
+
+cabal.mkDerivation (self: {
+  pname = "sizes";
+  version = "2.3.1.1";
+  sha256 = "1k7rvcj5sp30zwm16wnsw40y4rkqnfxlrl3ridqhp91q8286qjbs";
+  isLibrary = false;
+  isExecutable = true;
+  buildDepends = [
+    cmdargs deepseq dlist lens parallelIo regexPosix systemFileio
+    systemFilepath text
+  ];
+  meta = {
+    homepage = "https://github.com/jwiegley/sizes";
+    description = "Recursively show space (size and i-nodes) used in subdirectories";
+    license = self.stdenv.lib.licenses.bsd3;
+    platforms = self.ghc.meta.platforms;
+  };
+})
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 91aa2aac5aa..e655a33ef7d 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -3025,6 +3025,8 @@ let result = let callPackage = x : y : modifyPrio (newScope result.finalReturn x
 
   packunused = callPackage ../development/tools/haskell/packunused {};
 
+  sizes = callPackage ../tools/system/sizes {};
+
   splot = callPackage ../development/tools/haskell/splot {};
 
   timeplot = callPackage ../development/tools/haskell/timeplot {};