This patch was borrowed from Debian's package:
https://salsa.debian.org/debian-astro-team/aoflagger/-/blob/0484ef75a663e3e07738550cdade46f433a53dac/debian/patches/Use-system-provided-pybind11.patch
Description: Use system provided pybind11
Author: Ole Streicher <olebole@debian.org>
Origin: Debian
Last-Update: Mon, 30 Aug 2021 11:05:37 +0200
---
 CMakeLists.txt | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 655ea5e..824ee2a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -62,11 +62,6 @@ foreach(ExternalSubmodule IN LISTS ExternalSubmoduleDirectories)
   endif()
 endforeach()
 
-# Include aocommon/pybind11 headers
-include_directories("${CMAKE_SOURCE_DIR}/external/aocommon/include")
-add_subdirectory("${CMAKE_SOURCE_DIR}/external/pybind11")
-include_directories(SYSTEM ${pybind11_INCLUDE_DIR})
-
 find_package(
   HDF5
   COMPONENTS C CXX
@@ -101,6 +96,11 @@ find_package(PythonInterp REQUIRED)
 message(STATUS "Using python version ${PYTHON_VERSION_STRING}")
 include_directories(SYSTEM ${PYTHON_INCLUDE_DIRS})
 
+# Include pybind11 headers
+find_package(pybind11 REQUIRED)
+include_directories("${CMAKE_SOURCE_DIR}/external/aocommon/include")
+include_directories(${pybind11_INCLUDE_DIR})
+
 # boost::alignment requires Boost 1.56
 find_package(Boost 1.56.0 REQUIRED COMPONENTS date_time filesystem system
                                               unit_test_framework)
lass='form'><form class='right' method='get' action='/guix/log/tests/system.scm'>
<input type='hidden' name='id' value='f8ce73c5e29af418d1d575493e616edee4f2b0b0'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=f8ce73c5e29af418d1d575493e616edee4f2b0b0'>root</a>/<a href='/guix/log/tests?id=f8ce73c5e29af418d1d575493e616edee4f2b0b0'>tests</a>/<a href='/guix/log/tests/system.scm?id=f8ce73c5e29af418d1d575493e616edee4f2b0b0'>system.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/system.scm?id=f8ce73c5e29af418d1d575493e616edee4f2b0b0&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2022-10-22 01:46:55 +0200'>2022-10-22</span></td><td><a href='/guix/commit/tests/system.scm?id=a3619079f95213c4f983e69210ed12b38fd31022'>Remove now unnecessary uses of (guix grafts).</a><span class='msg-avail'>...<span class='msg-tooltip'>These modules would use (guix grafts) just to access '%graft?' and
related bindings, which are now in (guix store).

* gnu/ci.scm,
guix/gexp.scm,
guix/lint.scm,
guix/scripts.scm,
guix/scripts/archive.scm,
guix/scripts/build.scm,
guix/scripts/challenge.scm,
guix/scripts/deploy.scm,
guix/scripts/environment.scm,
guix/scripts/home.scm,
guix/scripts/pack.scm,
guix/scripts/package.scm,
guix/scripts/pull.scm,
guix/scripts/size.scm,
guix/scripts/system.scm,
guix/scripts/weather.scm,
tests/builders.scm,
tests/channels.scm,
tests/cpan.scm,
tests/derivations.scm,
tests/gexp.scm,
tests/graph.scm,
tests/guix-daemon.sh,
tests/monads.scm,
tests/pack.scm,
tests/packages.scm,
tests/profiles.scm,
tests/system.scm: Remove #:use-module (guix grafts).
</span></span></td><td>Ludovic Courtès</td></tr>