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)
2'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages'>
<input type='hidden' name='id' value='5cc1075a76392666d3d733837f5c6252b1e48002'/><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/commit/?id=5cc1075a76392666d3d733837f5c6252b1e48002'>root</a>/<a href='/guix/commit/gnu?id=5cc1075a76392666d3d733837f5c6252b1e48002'>gnu</a>/<a href='/guix/commit/gnu/packages?id=5cc1075a76392666d3d733837f5c6252b1e48002'>packages</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='5cc1075a76392666d3d733837f5c6252b1e48002'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Ludovic Courtès &lt;ludo@gnu.org&gt;</td><td class='right'>2019-06-27 23:33:48 +0200</td></tr>
<tr><th>committer</th><td>Ludovic Courtès &lt;ludo@gnu.org&gt;</td><td class='right'>2019-06-27 23:33:48 +0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/guix/commit/gnu/packages?id=5cc1075a76392666d3d733837f5c6252b1e48002'>5cc1075a76392666d3d733837f5c6252b1e48002</a> (<a href='/guix/patch/gnu/packages?id=5cc1075a76392666d3d733837f5c6252b1e48002'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/guix/tree/?id=5cc1075a76392666d3d733837f5c6252b1e48002'>aff2a303881a6fe53021a6e78a767958e608719b</a> /<a href='/guix/tree/gnu/packages?id=5cc1075a76392666d3d733837f5c6252b1e48002'>gnu/packages</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/guix/commit/gnu/packages?id=9c2563a80b6f1d8fb8677f5314e6180ea9916aa5'>9c2563a80b6f1d8fb8677f5314e6180ea9916aa5</a> (<a href='/guix/diff/gnu/packages?id=5cc1075a76392666d3d733837f5c6252b1e48002&amp;id2=9c2563a80b6f1d8fb8677f5314e6180ea9916aa5'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/guix/commit/gnu/packages?id=c30d117822a8ca26cd8c06c0a3974955bef68eac'>c30d117822a8ca26cd8c06c0a3974955bef68eac</a> (<a href='/guix/diff/gnu/packages?id=5cc1075a76392666d3d733837f5c6252b1e48002&amp;id2=c30d117822a8ca26cd8c06c0a3974955bef68eac'>diff</a>)</td></tr><tr><th>download</th><td colspan='2' class='oid'><a href='/guix/snapshot/guix-5cc1075a76392666d3d733837f5c6252b1e48002.tar.gz'>guix-5cc1075a76392666d3d733837f5c6252b1e48002.tar.gz</a><br/><a href='/guix/snapshot/guix-5cc1075a76392666d3d733837f5c6252b1e48002.zip'>guix-5cc1075a76392666d3d733837f5c6252b1e48002.zip</a><br/></td></tr></table>
<div class='commit-subject'>Merge branch 'master' into core-updates</div><div class='commit-msg'></div><div class='diffstat-header'><a href='/guix/diff/?id=5cc1075a76392666d3d733837f5c6252b1e48002'>Diffstat</a> (limited to 'gnu/packages')</div><table summary='diffstat' class='diffstat'>