dev-python/numpy: fix alpha issues

One test that imports numpy from system namespace, disable this test
unless the current version of numpy is already installed.

One test that needs source code patch, submitted upstream.

See: https://github.com/numpy/numpy/pull/25078
Bug: https://bugs.gentoo.org/909738
Signed-off-by: Matoro Mahri <matoro_gentoo@matoro.tk>
Signed-off-by: Sam James <sam@gentoo.org>

dev-python/numpy/files/numpy-1.26.1-alpha.patch

@@ -0,0 +1,25 @@
+https://bugs.gentoo.org/909738
+https://github.com/numpy/numpy/pull/25078
+
+commit 43aaf2093d8dfb3c1fea5d409ea4aa1d0f77816f
+Author: matoro <matoro@users.noreply.github.com>
+Date:   Mon Nov 6 10:21:32 2023 -0500
+
+    BUG: alpha doesn't use REAL(10)
+    
+    Same as e.g. loongarch per gh-24904.  At this point seems like it should
+    be more of an exclude list than an include one...
+
+diff --git a/numpy/f2py/crackfortran.py b/numpy/f2py/crackfortran.py
+index f352bbaa2..d17b052f9 100755
+--- a/numpy/f2py/crackfortran.py
++++ b/numpy/f2py/crackfortran.py
+@@ -2452,7 +2452,7 @@ def _selected_real_kind_func(p, r=0, radix=0):
+     if p < 16:
+         return 8
+     machine = platform.machine().lower()
+-    if machine.startswith(('aarch64', 'arm64', 'loongarch', 'power', 'ppc', 'riscv', 's390x', 'sparc')):
++    if machine.startswith(('aarch64', 'alpha', 'arm64', 'loongarch', 'power', 'ppc', 'riscv', 's390x', 'sparc')):
+         if p <= 33:
+             return 16
+     else:

dev-python/numpy/numpy-1.26.1.ebuild

@@ -49,6 +49,7 @@ BDEPEND="
 		>=dev-python/pytz-2019.3[${PYTHON_USEDEP}]
 	)
 "
+PATCHES=( "${FILESDIR}/${PN}-1.26.1-alpha.patch" )
 
 EPYTEST_XDIST=1
 distutils_enable_tests pytest
@@ -142,6 +143,13 @@ python_test() {
 			;;
 	esac
 
+	if ! has_version -b "~${CATEGORY}/${P}[${PYTHON_USEDEP}]" ; then
+		# depends on importing numpy.random from system namespace
+		EPYTEST_DESELECT+=(
+			'random/tests/test_extending.py::test_cython'
+		)
+	fi
+
 	rm -rf numpy || die
 	epytest --pyargs numpy
 }