From 17b03a7b12667bb49ebfca49c58de8d663818461 Mon Sep 17 00:00:00 2001
From: Ilan Gold <ilanbassgold@gmail.com>
Date: Mon, 11 Nov 2024 16:55:02 +0100
Subject: [PATCH] (fix): resolve cupy import error on `cupy-cuda12x<0.13`
 (#1754)

* (fix): resolve cupy import error on `cupy-cuda12x<0.13`

* (chore): release note
---
 docs/release-notes/1754.bugfix.md |  1 +
 src/anndata/compat/__init__.py    | 11 ++++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)
 create mode 100644 docs/release-notes/1754.bugfix.md

diff --git a/docs/release-notes/1754.bugfix.md b/docs/release-notes/1754.bugfix.md
new file mode 100644
index 000000000..492553ef1
--- /dev/null
+++ b/docs/release-notes/1754.bugfix.md
@@ -0,0 +1 @@
+Fix `cupy<0.13` imports in non-gpu environments {user}`ilan-gold`
diff --git a/src/anndata/compat/__init__.py b/src/anndata/compat/__init__.py
index b5ec3d415..255ffa548 100644
--- a/src/anndata/compat/__init__.py
+++ b/src/anndata/compat/__init__.py
@@ -140,7 +140,16 @@ def __repr__():
             return "mock dask.array.core.Array"
 
 
-if find_spec("cupy") or TYPE_CHECKING:
+# https://github.com/scverse/anndata/issues/1749
+def is_cupy_importable() -> bool:
+    try:
+        import cupy  # noqa: F401
+    except ImportError:
+        return False
+    return True
+
+
+if is_cupy_importable() or TYPE_CHECKING:
     from cupy import ndarray as CupyArray
     from cupyx.scipy.sparse import csc_matrix as CupyCSCMatrix
     from cupyx.scipy.sparse import csr_matrix as CupyCSRMatrix