Prepare for upstream reformat in mkl-service

Author: urob

patches/mkl-service/dll_directory.patch

@@ -1,20 +1,19 @@
 diff --git a/mkl/__init__.py b/mkl/__init__.py
-index d2fefc7..47f35b9 100644
+index 4a86a64..1ebe93a 100644
 --- a/mkl/__init__.py
 +++ b/mkl/__init__.py
-@@ -23,7 +23,11 @@
+@@ -23,7 +23,10 @@
  # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 +import contextlib
 +import os
  import sys
 +from importlib.metadata import PackageNotFoundError, files
-+
 
- class RTLD_for_MKL():
-     def __init__(self):
-@@ -38,6 +42,20 @@ class RTLD_for_MKL():
+ 
+ class RTLD_for_MKL:
+@@ -41,6 +44,21 @@ class RTLD_for_MKL:
              sys.setdlopenflags(self.saved_rtld | ctypes.RTLD_GLOBAL)
          except AttributeError:
              pass
@@ -23,12 +22,13 @@ index d2fefc7..47f35b9 100644
 +            AttributeError, FileNotFoundError, StopIteration, PackageNotFoundError
 +        ):
 +            if os.name == "nt":
-+                # Add MKL library to DLL search path on Windows.
++                # Add MKL library path to DLL search path on Windows.
 +                dll = next(p for p in files("mkl") if p.match("*mkl_rt*.dll"))
 +                dll_dir = dll.locate().resolve().parent
 +                os.add_dll_directory(dll_dir)
 +            else:
-+                # Preload MKL library on Linux.
++                # There's no easy way to expand LD_LIBRARY_PATH at runtime in
++                # Linux. Instead preload MKL library directly.
 +                dll = next(p for p in files("mkl") if p.match("*libmkl_rt.so*"))
 +                ctypes.CDLL(dll.locate().resolve(), mode=ctypes.RTLD_GLOBAL)
 +