From 9b0b85345ce982426d6d16f086c06eb174d9a024 Mon Sep 17 00:00:00 2001
From: Frederik Rietdijk <fridh@fridh.nl>
Date: Thu, 19 Dec 2019 19:57:42 +0100
Subject: [PATCH] pythonPackages.pybind11: hardcode include directory

---
 .../0001-Find-include-directory.patch         | 53 +++++++++++++++++++
 .../python-modules/pybind11/default.nix       | 10 +++-
 2 files changed, 61 insertions(+), 2 deletions(-)
 create mode 100644 pkgs/development/python-modules/pybind11/0001-Find-include-directory.patch

diff --git a/pkgs/development/python-modules/pybind11/0001-Find-include-directory.patch b/pkgs/development/python-modules/pybind11/0001-Find-include-directory.patch
new file mode 100644
index 00000000000..d5b669dab7a
--- /dev/null
+++ b/pkgs/development/python-modules/pybind11/0001-Find-include-directory.patch
@@ -0,0 +1,53 @@
+From a027e2590d5d2d384d23568a8d47b7095054b6b7 Mon Sep 17 00:00:00 2001
+From: Frederik Rietdijk <fridh@fridh.nl>
+Date: Thu, 19 Dec 2019 19:51:07 +0100
+Subject: [PATCH] Find include directory
+
+---
+ pybind11/__init__.py | 33 +--------------------------------
+ 1 file changed, 1 insertion(+), 32 deletions(-)
+
+diff --git a/pybind11/__init__.py b/pybind11/__init__.py
+index c625e8c..c8a707b 100644
+--- a/pybind11/__init__.py
++++ b/pybind11/__init__.py
+@@ -2,35 +2,4 @@ from ._version import version_info, __version__  # noqa: F401 imported but unuse
+ 
+ 
+ def get_include(user=False):
+-    from distutils.dist import Distribution
+-    import os
+-    import sys
+-
+-    # Are we running in a virtual environment?
+-    virtualenv = hasattr(sys, 'real_prefix') or \
+-        sys.prefix != getattr(sys, "base_prefix", sys.prefix)
+-
+-    # Are we running in a conda environment?
+-    conda = os.path.exists(os.path.join(sys.prefix, 'conda-meta'))
+-
+-    if virtualenv:
+-        return os.path.join(sys.prefix, 'include', 'site',
+-                            'python' + sys.version[:3])
+-    elif conda:
+-        if os.name == 'nt':
+-            return os.path.join(sys.prefix, 'Library', 'include')
+-        else:
+-            return os.path.join(sys.prefix, 'include')
+-    else:
+-        dist = Distribution({'name': 'pybind11'})
+-        dist.parse_config_files()
+-
+-        dist_cobj = dist.get_command_obj('install', create=True)
+-
+-        # Search for packages in user's home directory?
+-        if user:
+-            dist_cobj.user = user
+-            dist_cobj.prefix = ""
+-        dist_cobj.finalize_options()
+-
+-        return os.path.dirname(dist_cobj.install_headers)
++    return "@include@"
+-- 
+2.23.0
+
diff --git a/pkgs/development/python-modules/pybind11/default.nix b/pkgs/development/python-modules/pybind11/default.nix
index 442e6e70018..76e60fda86a 100644
--- a/pkgs/development/python-modules/pybind11/default.nix
+++ b/pkgs/development/python-modules/pybind11/default.nix
@@ -39,6 +39,14 @@ buildPythonPackage rec {
   dontUsePipInstall = true;
   dontUseSetuptoolsCheck = true;
 
+  patches = [
+    ./0001-Find-include-directory.patch
+  ];
+
+  postPatch = ''
+    substituteInPlace pybind11/__init__.py --subst-var-by include "$out/include"
+  '';
+
   preFixup = ''
     pushd ..
     export PYBIND11_USE_CMAKE=1
@@ -50,8 +58,6 @@ buildPythonPackage rec {
     popd
   '';
 
-  doCheck = true;
-
   checkInputs = [
     pytest
     numpy