diff --git a/default.nix b/default.nix
index e6b5d65..f5b48d3 100644
--- a/default.nix
+++ b/default.nix
@@ -22,6 +22,10 @@ rec {
     inherit adiak;
     inherit maintainers;
   };
+  caliper-reader = pkgs.callPackage ./pkgs/hpc/caliper-reader {
+    inherit caliper;
+    inherit maintainers;
+  };
   conduit = pkgs.callPackage ./pkgs/hpc/conduit {
     inherit maintainers;
   };
@@ -29,6 +33,10 @@ rec {
     inherit conduit;
     inherit maintainers;
   };
+  hatchet = pkgs.callPackage ./pkgs/hpc/hatchet {
+    inherit caliper-reader;
+    inherit maintainers;
+  };
   flux-core = pkgs.callPackage ./pkgs/hpc/flux-core {
     inherit maintainers;
   };
diff --git a/pkgs/hpc/caliper-reader/default.nix b/pkgs/hpc/caliper-reader/default.nix
new file mode 100644
index 0000000..dc1d899
--- /dev/null
+++ b/pkgs/hpc/caliper-reader/default.nix
@@ -0,0 +1,34 @@
+{ lib
+, stdenv
+, python3Packages
+, maintainers
+, caliper
+}:
+
+# TODO maybe should not build this from pypi
+
+python3Packages.buildPythonApplication rec {
+  pname = "caliper-reader";
+  version = "0.3.0";
+
+  src = python3Packages.fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-/AHf9SewztBRrcK9NeUIV7OfARRyZJwkGIStmhbZVxc=";
+  };
+
+  propagatedBuildInputs = [ caliper ];
+  pythonImportsCheck = [
+    "caliperreader"
+  ];
+
+  # Only support for Python 3
+  doCheck = !python3Packages.isPy27;
+
+  meta = with lib; {
+    description = "caliper-reader: A Python reader for Caliper files";
+    homepage = "https://github.com/LLNL/Caliper";
+    license = licenses.bsd3;
+    maintainers = [ maintainers.vsoch ];
+  };
+
+}
diff --git a/pkgs/hpc/hatchet/default.nix b/pkgs/hpc/hatchet/default.nix
new file mode 100644
index 0000000..da2b711
--- /dev/null
+++ b/pkgs/hpc/hatchet/default.nix
@@ -0,0 +1,46 @@
+{ lib
+, stdenv
+, pkgs
+, maintainers
+, fetchurl
+, caliper-reader
+}:
+
+pkgs.python3Packages.buildPythonApplication rec {
+  pname = "hatchet";
+  version = "2022.2.2";
+
+  src = fetchurl {
+    url = "https://github.com/LLNL/hatchet/archive/v${version}.tar.gz";
+    sha256 = "sha256-5dQJH45hcBAIjitS9tH4AOwpp4YcLy6WRktCMXD719Y=";
+  };
+
+  nativeBuildInputs = [
+    pkgs.python3Packages.cython
+    pkgs.python3Packages.setuptools
+  ];
+
+  propagatedBuildInputs = [
+    pkgs.python3Packages.multiprocess
+    pkgs.python3Packages.matplotlib
+    pkgs.python3Packages.pandas
+    pkgs.python3Packages.numpy
+    pkgs.python3Packages.pyyaml
+    pkgs.python3Packages.pydot
+    caliper-reader
+  ];
+
+  # Only support for Python 3
+  doCheck = !pkgs.python3Packages.isPy27;
+
+  pythonImportsCheck = [
+    "hatchet"
+  ];
+
+  meta = with lib; {
+    description = "Graph-indexed Pandas DataFrames for analyzing hierarchical performance data";
+    homepage = "https://github.com/LLNL/hatchet";
+    license = licenses.mit;
+    maintainers = [ maintainers.vsoch ];
+  };
+}