diff --git a/pkgs/development/python-modules/smmap2/default.nix b/pkgs/development/python-modules/smmap2/default.nix
deleted file mode 100644
index cf0b76d1a87b9..0000000000000
--- a/pkgs/development/python-modules/smmap2/default.nix
+++ /dev/null
@@ -1,20 +0,0 @@
-{ lib, fetchPypi, buildPythonPackage, nosexcover }:
-
-buildPythonPackage rec {
-  pname = "smmap2";
-  version = "2.0.5";
-
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "29a9ffa0497e7f2be94ca0ed1ca1aa3cd4cf25a1f6b4f5f87f74b46ed91d609a";
-  };
-
-  checkInputs = [ nosexcover ];
-
-  meta = {
-    description = "A pure python implementation of a sliding window memory map manager";
-    homepage = https://pypi.org/project/smmap2;
-    maintainers = [ ];
-    license = lib.licenses.bsd3;
-  };
-}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 15b45c7bffe87..0773a1984ab5d 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -5754,7 +5754,7 @@ in {
 
   smmap = callPackage ../development/python-modules/smmap { };
 
-  smmap2 = callPackage ../development/python-modules/smmap2 { };
+  smmap2 = throw "smmap2 has been deprecated, use smmap instead."; # added 2020-03-14
 
   transaction = callPackage ../development/python-modules/transaction { };