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1babccfe50
Since 547570cd79 we do not always build
PyGObject and our development environment is broken when trying to use
GStreamer python when built against system PyGObject with the following
error importing Gst in there:
```
12345678** (gst-plugin-scanner:710617): CRITICAL **: 11:45:02.343: can't find gi.repository.Gst
Traceback (most recent call last):
File "/usr/lib/python3.9/site-packages/gi/repository/__init__.py", line 23, in <module>
from ..importer import DynamicImporter
File "/usr/lib64/python3.9/site-packages/gi/importer.py", line 33, in <module>
from .overrides import load_overrides
ImportError: cannot import name 'load_overrides' from 'gi.overrides' (/var/home/thiblahute/devel/gstreamer/gstreamer/subprojects/gst-editing-services/bindings/python/gi/overrides/__init__.py)
Factory Details:
```
The approach to fixing it is to implement override `gi` in
`gst-python/gi/` which we add to `PYTHONPATH`) and in there reset the
`gi` module to the right place and we get overrides from paths from
`_GI_OVERRIDES_PATH` we set in `gst-env.py` which points to all the
overrides that will be installed.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1155>
45 lines
1.2 KiB
Python
45 lines
1.2 KiB
Python
import gi
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import os
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import sys
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import imp
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from pathlib import Path
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# Remove this dummy module the python path and
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# try to import the actual gi module
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sys.path.remove(str(Path(__file__).parents[1]))
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del sys.modules["gi"]
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import gi
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class GstOverrideImport:
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def find_module(self, fullname, path=None, target=None):
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if fullname.startswith('gi.overrides'):
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fp = None
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try:
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fp, _, _ = imp.find_module(fullname.split(
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'.')[-1], os.environ.get('_GI_OVERRIDES_PATH', '').split(os.pathsep),)
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except ImportError:
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return None
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finally:
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if fp:
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fp.close()
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return self
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return None
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def load_module(self, name):
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if name in sys.modules:
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return sys.modules[name]
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fp, pathname, description = imp.find_module(name.split(
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'.')[-1], os.environ.get('_GI_OVERRIDES_PATH', '').split(os.pathsep),)
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try:
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module = imp.load_module(name, fp, pathname, description)
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finally:
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if fp:
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fp.close()
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sys.modules[name] = module
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return module
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sys.meta_path.insert(0, GstOverrideImport())
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