Added patch

sci-libs/scikit-learn/files/eb85684feb0505694e66365ba9f4d10a409f8f0b.patch

@@ -0,0 +1,107 @@
+From eb85684feb0505694e66365ba9f4d10a409f8f0b Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?J=C3=A9r=C3=A9mie=20du=20Boisberranger?=
+ <34657725+jeremiedbb@users.noreply.github.com>
+Date: Wed, 11 Oct 2023 11:43:47 +0200
+Subject: [PATCH] MAINT Follow cython performance hints (#27521)
+
+---
+ .../_middle_term_computer.pyx.tp                   |  2 +-
+ .../preprocessing/_csr_polynomial_expansion.pyx    |  2 +-
+ sklearn/tree/_splitter.pyx                         |  2 +-
+ sklearn/tree/_utils.pxd                            |  2 +-
+ sklearn/tree/_utils.pyx                            | 14 ++++++--------
+ 5 files changed, 10 insertions(+), 12 deletions(-)
+
+diff --git a/sklearn/metrics/_pairwise_distances_reduction/_middle_term_computer.pyx.tp b/sklearn/metrics/_pairwise_distances_reduction/_middle_term_computer.pyx.tp
+index f2d89ed65909c..bfe465394c4d2 100644
+--- a/sklearn/metrics/_pairwise_distances_reduction/_middle_term_computer.pyx.tp
++++ b/sklearn/metrics/_pairwise_distances_reduction/_middle_term_computer.pyx.tp
+@@ -82,7 +82,7 @@ cdef void _middle_term_sparse_dense_{{name_suffix}}(
+     intp_t Y_end,
+     bint c_ordered_middle_term,
+     float64_t * dist_middle_terms,
+-) nogil:
++) noexcept nogil:
+     # This routine assumes that dist_middle_terms is a pointer to the first element
+     # of a buffer filled with zeros of length at least equal to n_X × n_Y, conceptually
+     # representing a 2-d C-ordered of F-ordered array.
+diff --git a/sklearn/preprocessing/_csr_polynomial_expansion.pyx b/sklearn/preprocessing/_csr_polynomial_expansion.pyx
+index 90f81c0399a6e..017af83f035b2 100644
+--- a/sklearn/preprocessing/_csr_polynomial_expansion.pyx
++++ b/sklearn/preprocessing/_csr_polynomial_expansion.pyx
+@@ -166,7 +166,7 @@ cpdef void _csr_polynomial_expansion(
+     INDEX_B_t[:] result_indptr,     # OUT
+     FLAG_t interaction_only,
+     FLAG_t degree
+-) nogil:
++):
+     """
+     Perform a second or third degree polynomial or interaction expansion on a
+     compressed sparse row (CSR) matrix. The method used only takes products of
+diff --git a/sklearn/tree/_splitter.pyx b/sklearn/tree/_splitter.pyx
+index a9d3a169ec84a..81cd61ed22631 100644
+--- a/sklearn/tree/_splitter.pyx
++++ b/sklearn/tree/_splitter.pyx
+@@ -263,7 +263,7 @@ cdef inline void shift_missing_values_to_left_if_required(
+     SplitRecord* best,
+     intp_t[::1] samples,
+     intp_t end,
+-) nogil:
++) noexcept nogil:
+     cdef intp_t i, p, current_end
+     # The partitioner partitions the data such that the missing values are in
+     # samples[-n_missing:] for the criterion to consume. If the missing values
+diff --git a/sklearn/tree/_utils.pxd b/sklearn/tree/_utils.pxd
+index 4167230bfbf4d..b59d18879ca94 100644
+--- a/sklearn/tree/_utils.pxd
++++ b/sklearn/tree/_utils.pxd
+@@ -39,7 +39,7 @@ ctypedef fused realloc_ptr:
+     (Cell*)
+     (Node**)
+ 
+-cdef realloc_ptr safe_realloc(realloc_ptr* p, size_t nelems) except * nogil
++cdef int safe_realloc(realloc_ptr* p, size_t nelems) except -1 nogil
+ 
+ 
+ cdef cnp.ndarray sizet_ptr_to_ndarray(intp_t* data, intp_t size)
+diff --git a/sklearn/tree/_utils.pyx b/sklearn/tree/_utils.pyx
+index 3c0c312b25fbe..b6115d4f21d18 100644
+--- a/sklearn/tree/_utils.pyx
++++ b/sklearn/tree/_utils.pyx
+@@ -22,22 +22,20 @@ from ..utils._random cimport our_rand_r
+ # Helper functions
+ # =============================================================================
+ 
+-cdef realloc_ptr safe_realloc(realloc_ptr* p, size_t nelems) except * nogil:
++cdef int safe_realloc(realloc_ptr* p, size_t nelems) except -1 nogil:
+     # sizeof(realloc_ptr[0]) would be more like idiomatic C, but causes Cython
+     # 0.20.1 to crash.
+     cdef size_t nbytes = nelems * sizeof(p[0][0])
+     if nbytes / sizeof(p[0][0]) != nelems:
+         # Overflow in the multiplication
+-        with gil:
+-            raise MemoryError("could not allocate (%d * %d) bytes"
+-                              % (nelems, sizeof(p[0][0])))
++        raise MemoryError(f"could not allocate ({nelems} * {sizeof(p[0][0])}) bytes")
++
+     cdef realloc_ptr tmp = <realloc_ptr>realloc(p[0], nbytes)
+     if tmp == NULL:
+-        with gil:
+-            raise MemoryError("could not allocate %d bytes" % nbytes)
++        raise MemoryError(f"could not allocate {nbytes} bytes")
+ 
+     p[0] = tmp
+-    return tmp  # for convenience
++    return 0
+ 
+ 
+ def _realloc_test():
+@@ -111,7 +109,7 @@ cdef class WeightedPQueue:
+         or 0 otherwise.
+         """
+         self.array_ptr = 0
+-        # Since safe_realloc can raise MemoryError, use `except *`
++        # Since safe_realloc can raise MemoryError, use `except -1`
+         safe_realloc(&self.array_, self.capacity)
+         return 0
+ 

sci-libs/scikit-learn/scikit-learn-1.3.2.ebuild

@@ -38,6 +38,10 @@ BDEPEND="
 	dev-python/cython[${PYTHON_USEDEP}]
 "
 
+PATCHES=(
+	"${FILESDIR}/eb85684feb0505694e66365ba9f4d10a409f8f0b.patch"
+)
+
 distutils_enable_tests pytest
 # For some reason this wants to use urllib to fetch things from the internet
 # distutils_enable_sphinx doc \