pkgs/development/python-modules/cairocffi/dlopen-paths.patch

   1 Patch dlopen() to allow direct paths to all required libs
   2
   3 diff --git a/cairocffi/__init__.py b/cairocffi/__init__.py
   4 index f917d90..31dab12 100644
   5 --- a/cairocffi/__init__.py
   6 +++ b/cairocffi/__init__.py
   7 @@ -22,6 +22,14 @@ VERSION = __version__ = '1.7.1'
   8  version = '1.17.2'
   9  version_info = (1, 17, 2)
  10
  11 +# Use hardcoded soname, because ctypes.util use gcc/objdump which shouldn't be
  12 +# required for runtime
  13 +_LIBS = {
  14 +    'cairo': '@cairo@/lib/libcairo@ext@',
  15 +    'glib-2.0': '@glib@/lib/libglib-2.0@ext@',
  16 +    'gobject-2.0': '@glib@/lib/libgobject-2.0@ext@',
  17 +    'gdk_pixbuf-2.0': '@gdk_pixbuf@/lib/libgdk_pixbuf-2.0@ext@',
  18 +}
  19
  20  # Python 3.8 no longer searches for DLLs in PATH, so we can add everything in
  21  # CAIROCFFI_DLL_DIRECTORIES manually. Note that unlike PATH, add_dll_directory
  22 @@ -36,26 +44,14 @@ if dll_directories and hasattr(os, 'add_dll_directory'):
  23
  24  def dlopen(ffi, library_names, filenames):
  25      """Try various names for the same library, for different platforms."""
  26 -    exceptions = []
  27 -
  28      for library_name in library_names:
  29 -        library_filename = find_library(library_name)
  30 -        if library_filename:
  31 -            filenames = (library_filename, *filenames)
  32 -        else:
  33 -            exceptions.append(
  34 -                'no library called "{}" was found'.format(library_name))
  35 -
  36 -    for filename in filenames:
  37 -        try:
  38 -            return ffi.dlopen(filename)
  39 -        except OSError as exception:  # pragma: no cover
  40 -            exceptions.append(exception)
  41 -
  42 -    error_message = '\n'.join(  # pragma: no cover
  43 -        str(exception) for exception in exceptions)
  44 -    raise OSError(error_message)  # pragma: no cover
  45 +        path = _LIBS.get(library_name, None)
  46 +        if path:
  47 +            lib = ffi.dlopen(path)
  48 +            if lib:
  49 +                return lib
  50
  51 +    raise OSError("dlopen() failed to load a library: %s as %s" % (library_name, path))
  52
  53  cairo = dlopen(
  54      ffi, ('cairo-2', 'cairo', 'libcairo-2'),