diff --git a/lib/maintainers.nix b/lib/maintainers.nix
index 10036c193604..9cc992914a4d 100644
--- a/lib/maintainers.nix
+++ b/lib/maintainers.nix
@@ -132,6 +132,7 @@
   lassulus = "Lassulus <lassulus@gmail.com>";
   lethalman = "Luca Bruno <lucabru@src.gnome.org>";
   lhvwb = "Nathaniel Baxter <nathaniel.baxter@gmail.com>";
+  lihop = "Leroy Hopson <nixos@leroy.geek.nz>";
   linquize = "Linquize <linquize@yahoo.com.hk>";
   linus = "Linus Arver <linusarver@gmail.com>";
   lnl7 = "Daiderd Jordan <daiderd@gmail.com>";
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 45148de8ac3e..6e6e9d4ddc24 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3446,6 +3446,26 @@ let
     };
   };
 
+  jdcal = buildPythonPackage rec {
+    version = "1.0";
+    name = "jdcal-${version}";
+
+    src = pkgs.fetchFromGitHub {
+      owner = "phn";
+      repo = "jdcal";
+      rev = "v${version}";
+      sha256 = "0jjgrrylraqzk3n97hay4gj00ky6vlvkfaapfgqlbcxyq30j24vq";
+    };
+
+    meta = {
+      description = "A module containing functions for converting between Julian dates and calendar dates";
+      homepage = "https://github.com/phn/jdcal";
+      license = licenses.bsd2;
+      maintainers = with maintainers; [ lihop ];
+      platforms = platforms.all;
+    };
+  };
+
   jsonwatch = buildPythonPackage rec {
     name = "jsonwatch-0.2.0";
 
@@ -8079,6 +8099,27 @@ let
     doCheck = false;
   };
 
+  openpyxl = buildPythonPackage rec {
+    version = "2.2.4";
+    name = "openpyxl-${version}";
+
+    src = pkgs.fetchhg {
+      url = "https://bitbucket.org/openpyxl/openpyxl";
+      rev = "${version}";
+      sha256 = "1g9imbg4sjfyv5sqg2s7h4svhdmbnvq16hvc1a8jpaqq8nc2vjj2";
+    };
+
+    propagatedBuildInputs = with self; [ jdcal ];
+
+    meta = {
+      description = "A Python library to read/write Excel 2007 xlsx/xlsm files";
+      homepage = "https://openpyxl.readthedocs.org";
+      license = licenses.mit;
+      maintainers = with maintainers; [ lihop ];
+      platforms = platforms.all;
+    };
+  };
+
   # optfunc = buildPythonPackage ( rec {
   #   name = "optfunc-git";
   #