diff --git a/manifest.dhall b/manifest.dhall
index ac2953911a794c7a3d3643a881590f1dadc75dfa..4dbfeed4ea34c791730250c8555f1d1c7edf3d18 100644
--- a/manifest.dhall
+++ b/manifest.dhall
@@ -803,6 +803,7 @@ in  [ callHackage "Cabal" "3.8.1.0"
     , callHackage "warp" "3.3.22"
     , callHackage "warp-tls" "3.3.3"
     , callHackage "websockets" "0.12.7.3"
+    , callHackage "weigh" "0.0.16"
     , callHackage "witherable" "0.4.2"
     , callHackage "with-utf8" "1.0.2.3"
     , callHackage "wizards" "1.0.3"
diff --git a/overlay.nix b/overlay.nix
index e706449a6384d7bb84d5f8d43ba6a3b1e61f0999..cd1c7898e4e3f07bd15ea87a51363cb243094a01 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -1233,6 +1233,8 @@ self: with pkgs.haskell.lib; {
 
   websockets = self.callPackage (./pkgs/websockets.nix) { };
 
+  weigh = self.callPackage (./pkgs/weigh.nix) { };
+
   with-utf8 = self.callPackage (./pkgs/with-utf8.nix) { };
 
   witherable = self.callPackage (./pkgs/witherable.nix) { };
diff --git a/pkgs/weigh.nix b/pkgs/weigh.nix
new file mode 100644
index 0000000000000000000000000000000000000000..7bda63c9e048177c0741267557ffbfb24140bbc2
--- /dev/null
+++ b/pkgs/weigh.nix
@@ -0,0 +1,41 @@
+{ mkDerivation
+, base
+, deepseq
+, ghc
+, lib
+, mtl
+, process
+, split
+, temporary
+}:
+mkDerivation {
+  pname = "weigh";
+  version = "0.0.16";
+  sha256 = "a92a19209b6e8999be21fed8c6ddad8cddf5b98352341b58d2c3e3ef4e96eb8e";
+  revision = "1";
+  editedCabalFile = "0y71p1fg2q9ig955b21fhfaipdamdrlzfl302prqz8g0sfcxvmfg";
+  isLibrary = true;
+  isExecutable = false;
+  enableSeparateDataOutput = false;
+  libraryHaskellDepends = [
+    base
+    deepseq
+    ghc
+    mtl
+    process
+    split
+    temporary
+  ];
+  testHaskellDepends = [ base deepseq ];
+  enableLibraryProfiling = false;
+  enableExecutableProfiling = false;
+  doHaddock = false;
+  jailbreak = true;
+  doCheck = false;
+  doBenchmark = false;
+  hyperlinkSource = false;
+  homepage = "https://github.com/fpco/weigh#readme";
+  description = "Measure allocations of a Haskell functions/values";
+  license = lib.licenses.bsd3;
+  broken = false;
+}