40 lines
1.5 KiB
Diff
40 lines
1.5 KiB
Diff
From 17dc5b6cd96dcfe64fd71789c771ca9b96d260e5 Mon Sep 17 00:00:00 2001
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From: "Andrew J. Hesford" <ajh@sideband.org>
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Date: Fri, 21 Jul 2023 09:50:00 -0400
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Subject: [PATCH] Fix builds with Cython 3
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This is a *de minimis* fix for building with Cython 3. Recent Cython<3
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releases provided `Cython.Distutils.build_ext` as an alias to
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`Cython.Distutils.old_build_ext.old_build_ext`; Cython 3 drops this
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alias and instead uses a wholly new `Cython.Distutils.build_ext` that
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does not provide the `cython_sources` function used in `setup.py`.
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Explicitly importing `old_build_ext` preserves the existing behavior for
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recent Cython<3 and uses the correct behavior for Cython 3. Should the
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import fail (*e.g.*, because the version of Cython available predates
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the availability of `old_build_ext`), the import falls back to just
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`Cython.Distutils.build_ext`.
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Signed-off-by: Andrew J. Hesford <ajh@sideband.org>
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---
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setup.py | 6 +++++-
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1 file changed, 5 insertions(+), 1 deletion(-)
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diff --git a/setup.py b/setup.py
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index 944e7fa2..462b1e95 100644
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--- a/setup.py
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+++ b/setup.py
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@@ -82,7 +82,11 @@
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with_cython = True
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try:
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from Cython.Distutils.extension import Extension as _Extension
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- from Cython.Distutils import build_ext as _build_ext
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+ try:
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+ from Cython.Distutils.old_build_ext import old_build_ext as _build_ext
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+ except ImportError:
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+ from Cython.Distutils import build_ext as _build_ext
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+
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with_cython = True
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except ImportError:
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if with_cython:
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