From 9d3554c59dc012ad4e6b6a7d34b72f7fd62883af Mon Sep 17 00:00:00 2001
From: George Macon <George.Macon@gtri.gatech.edu>
Date: Fri, 30 Sep 2022 09:57:28 -0400
Subject: [PATCH] python3Packages.hdbscan: Patch out runtime Cython dependency

Upstream declares a dependency on Cython at runtime, but that's not a
true requirements. Remove it so that derivations depending on this one
can build without pip complaining that Cython cannot be found.
---
 pkgs/development/python-modules/hdbscan/default.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/python-modules/hdbscan/default.nix b/pkgs/development/python-modules/hdbscan/default.nix
index 9fa932c7e418..29dd585d8bec 100644
--- a/pkgs/development/python-modules/hdbscan/default.nix
+++ b/pkgs/development/python-modules/hdbscan/default.nix
@@ -9,6 +9,7 @@
 , fetchPypi
 , joblib
 , six
+, pythonRelaxDepsHook
 }:
 
 buildPythonPackage rec {
@@ -28,7 +29,8 @@ buildPythonPackage rec {
     })
   ];
 
-  nativeBuildInputs = [ cython ];
+  pythonRemoveDeps = [ "cython" ];
+  nativeBuildInputs = [ pythonRelaxDepsHook cython ];
   propagatedBuildInputs = [ numpy scipy scikit-learn joblib six ];
   preCheck = ''
     cd hdbscan/tests