From 40ec4c49aa46c90b42c189beaf3430918f6110da Mon Sep 17 00:00:00 2001
From: Daniel Segesdi <segesdi.dani@gmail.com>
Date: Thu, 27 Oct 2022 13:13:32 +0200
Subject: [PATCH 1/3] Add pyproject.toml with build system dependencies

This should fix missing modules when installed with
`pip install --use-pep517 horovod`
---
 pyproject.toml | 3 +++
 1 file changed, 3 insertions(+)
 create mode 100644 pyproject.toml

diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000000..84a65307e0
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,3 @@
+[build-system]
+requires = ["packaging", "setuptools"]
+

From d521f981aa7de45280609fb7529335ddd447e72b Mon Sep 17 00:00:00 2001
From: Daniel Segesdi <segesdi.dani@gmail.com>
Date: Thu, 27 Oct 2022 13:27:37 +0200
Subject: [PATCH 2/3] Update CHANGELOG

---
 CHANGELOG.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 625085f88e..c965f3e94b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### Fixed
 
+- Fixed install with `--use-pep517` by specifying build-system dependencies. ([#3758](https://github.com/horovod/horovod/pull/3758))
+
 
 ## [v0.26.1] - 2022-10-14
 

From c15dfaffae570e06742382edf0d8092ec504fe5c Mon Sep 17 00:00:00 2001
From: Daniel Segesdi <segesdi.dani@gmail.com>
Date: Fri, 4 Nov 2022 16:43:32 +0100
Subject: [PATCH 3/3] add tensorflow as "dynamic" dependency

---
 _custom_build/backend.py | 13 +++++++++++++
 pyproject.toml           |  2 ++
 setup.py                 |  2 +-
 3 files changed, 16 insertions(+), 1 deletion(-)
 create mode 100644 _custom_build/backend.py

diff --git a/_custom_build/backend.py b/_custom_build/backend.py
new file mode 100644
index 0000000000..d8e011c2d2
--- /dev/null
+++ b/_custom_build/backend.py
@@ -0,0 +1,13 @@
+from setuptools import build_meta as _orig
+
+prepare_metadata_for_build_wheel = _orig.prepare_metadata_for_build_wheel
+build_wheel = _orig.build_wheel
+build_sdist = _orig.build_sdist
+
+
+def get_requires_for_build_wheel(self, config_settings=None):
+    return _orig.get_requires_for_build_wheel(config_settings) + ["tensorflow"]
+
+
+def get_requires_for_build_sdist(self, config_settings=None):
+    return _orig.get_requires_for_build_sdist(config_settings) + ["tensorflow"]
diff --git a/pyproject.toml b/pyproject.toml
index 84a65307e0..4f5b3e7554 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,5 @@
 [build-system]
 requires = ["packaging", "setuptools"]
+build-backend = "backend"
+backend-path = ["_custom_build"]
 
diff --git a/setup.py b/setup.py
index e9ef7b1a60..4743ed61e4 100644
--- a/setup.py
+++ b/setup.py
@@ -28,7 +28,7 @@
 from setuptools import setup, Extension, find_packages
 from setuptools.command.build_ext import build_ext
 
-from horovod import __version__
+__version__ = "0.26.1"
 
 _FRAMEWORK_METADATA_FILE = 'horovod/metadata.json'