From 39963029c5915c6622becf3d79590c6b4f371286 Mon Sep 17 00:00:00 2001
From: Isaac Overcast <isaac.overcast@gmail.com>
Date: Sun, 22 Sep 2024 11:01:14 -0700
Subject: [PATCH] pca: warn if numpy > 2.0

---
 ipyrad/analysis/pca.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/ipyrad/analysis/pca.py b/ipyrad/analysis/pca.py
index bbac210d..cbe2aa3d 100644
--- a/ipyrad/analysis/pca.py
+++ b/ipyrad/analysis/pca.py
@@ -55,6 +55,13 @@
 this value.
 """
 
+_NUMPY_VERSION_ERROR = """
+PCA module requires numpy < 2.0.0 (see issue #578). Roll back to a
+supported version of numpy.
+
+conda install -c conda-forge numpy\<2.0.0
+"""
+
 # TODO: could allow LDA as alternative to PCA for supervised (labels) dsets.
 
 
@@ -120,6 +127,8 @@ def __init__(
             raise IPyradError(_MISSING_SKLEARN)
         if not sys.modules.get("toyplot"):
             raise IPyradError(_MISSING_TOYPLOT)
+        if np.lib.NumpyVersion(np.__version__) >= '2.0.0':
+            raise IPyradError(_NUMPY_VERSION_ERROR)
 
         # init attributes
         self.quiet = quiet