From b4da2596864abc36f04301a286b1c4fd17abdccd Mon Sep 17 00:00:00 2001
From: Markus Kowalewski <markus.kowalewski@gmail.com>
Date: Mon, 6 May 2024 15:14:21 +0200
Subject: [PATCH] python3Packages.h5py: lift requirement for mpi4py version

Unbreak the build for python 3.11 and python 3.12
---
 pkgs/development/python-modules/h5py/default.nix    |  6 ++++++
 .../python-modules/h5py/mpi4py-requirement.patch    | 13 +++++++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 pkgs/development/python-modules/h5py/mpi4py-requirement.patch

diff --git a/pkgs/development/python-modules/h5py/default.nix b/pkgs/development/python-modules/h5py/default.nix
index bc23ce61c176..0da90d4ccb9e 100644
--- a/pkgs/development/python-modules/h5py/default.nix
+++ b/pkgs/development/python-modules/h5py/default.nix
@@ -31,6 +31,12 @@ in buildPythonPackage rec {
     hash = "sha256-e36PeAcqLt7IfJg28l80ID/UkqRHVwmhi0F6M8+yH6k=";
   };
 
+  patches = [
+    # Unlock an overly strict locking of mpi4py version (seems not to be necessary).
+    # See also: https://github.com/h5py/h5py/pull/2418/files#r1589372479
+    ./mpi4py-requirement.patch
+  ];
+
   # avoid strict pinning of numpy
   postPatch = ''
     substituteInPlace pyproject.toml \
diff --git a/pkgs/development/python-modules/h5py/mpi4py-requirement.patch b/pkgs/development/python-modules/h5py/mpi4py-requirement.patch
new file mode 100644
index 000000000000..b32e804ebe5f
--- /dev/null
+++ b/pkgs/development/python-modules/h5py/mpi4py-requirement.patch
@@ -0,0 +1,13 @@
+diff --git a/setup.py b/setup.py
+index b1463422..7f0c7b10 100755
+--- a/setup.py
++++ b/setup.py
+@@ -47,7 +47,7 @@ if setup_configure.mpi_enabled():
+     # incompatible with newer setuptools.
+     RUN_REQUIRES.append('mpi4py >=3.1.1')
+     SETUP_REQUIRES.append("mpi4py ==3.1.1; python_version<'3.11'")
+-    SETUP_REQUIRES.append("mpi4py ==3.1.4; python_version>='3.11'")
++    SETUP_REQUIRES.append("mpi4py >=3.1.4; python_version>='3.11'")
+ 
+ # Set the environment variable H5PY_SETUP_REQUIRES=0 if we need to skip
+ # setup_requires for any reason.