python3Packages.pyopencl: fix build

Fix the recently broken build by adding `pybind11`
to the build. Also set $HOME to a temporary directory during the build
to avoid "Permission denied" errors in the build script.

This also unbreaks `sasview` and `pybitmessage`.

See also #56826
See also https://hydra.nixos.org/build/89037506

pkgs/development/python-modules/pyopencl/default.nix

@@ -11,14 +11,15 @@
 , six
 , opencl-headers
 , ocl-icd
+, pybind11
 }:
 
 buildPythonPackage rec {
   pname = "pyopencl";
   version = "2018.2.2";
 
   checkInputs = [ pytest ];
-  buildInputs = [ opencl-headers ocl-icd ];
+  buildInputs = [ opencl-headers ocl-icd pybind11 ];
 
   propagatedBuildInputs = [ numpy cffi pytools decorator appdirs six Mako ];
 
@@ -32,6 +33,10 @@ buildPythonPackage rec {
     substituteInPlace setup.py --replace "pytest>=2" ""
   '';
 
+  preBuild = ''
+    export HOME=$(mktemp -d)
+  '';
+
   # gcc: error: pygpu_language_opencl.cpp: No such file or directory
   doCheck = false;