diff --git a/pkgs/development/python-modules/keepkey/default.nix b/pkgs/development/python-modules/keepkey/default.nix
new file mode 100644
index 000000000000..0d7f7661e7dd
--- /dev/null
+++ b/pkgs/development/python-modules/keepkey/default.nix
@@ -0,0 +1,30 @@
+{ stdenv, fetchPypi, buildPythonPackage, ecdsa
+, mnemonic, protobuf3_0, hidapi }:
+
+buildPythonPackage rec {
+  name = "${pname}-${version}";
+  pname = "keepkey";
+  version = "0.7.3";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "14d2r8dlx997ypgma2k8by90acw7i3l7hfq4gar9lcka0lqfj714";
+  };
+
+  propagatedBuildInputs = [ protobuf3_0 hidapi ];
+
+  buildInputs = [ ecdsa mnemonic ];
+
+  # There are no actual tests: "ImportError: No module named tests"
+  doCheck = false;
+
+  # Remove impossible dependency constraint
+  postPatch = "sed -i -e 's|hidapi==|hidapi>=|' setup.py";
+
+  meta = with stdenv.lib; {
+    description = "KeepKey Python client";
+    homepage = https://github.com/keepkey/python-keepkey;
+    license = licenses.gpl3;
+    maintainers = with maintainers; [ np ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index f832beea6747..ab3a8a28a979 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -29632,36 +29632,14 @@ EOF
 
   mnemonic = callPackage ../development/python-modules/mnemonic.nix { };
 
+  keepkey = callPackage ../development/python-modules/keepkey { };
+
   ledgerblue = callPackage ../development/python-modules/ledgerblue { };
 
   ecpy = callPackage ../development/python-modules/ecpy { };
 
   trezor = callPackage ../development/python-modules/trezor.nix { };
 
-  keepkey = buildPythonPackage rec{
-    version = "0.7.3";
-    name = "keepkey-${version}";
-
-    src = pkgs.fetchurl {
-      url = "mirror://pypi/k/keepkey/${name}.tar.gz";
-      sha256 = "14d2r8dlx997ypgma2k8by90acw7i3l7hfq4gar9lcka0lqfj714";
-    };
-
-    propagatedBuildInputs = with self; [ protobuf3_0 hidapi ];
-
-    buildInputs = with self; [ ecdsa mnemonic ];
-
-    # There are no actual tests: "ImportError: No module named tests"
-    doCheck = false;
-
-    meta = {
-      description = "KeepKey Python client";
-      homepage = https://github.com/keepkey/python-keepkey;
-      license = licenses.gpl3;
-      maintainers = with maintainers; [ np ];
-    };
-  };
-
   semver = buildPythonPackage rec {
     name = "semver-${version}";
     version = "2.2.1";