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I accidentally ran calamari-predict from the top-level (instead of a sub-venv), which tried to update my GT4HistOCR model to the more recent TF – overwriting the checkpoint JSON.

Now, I tried to download that model again:

ocrd resmgr download --overwrite ocrd-calamari-recognize qurator-gt4histocr-1.0
INFO ocrd.cli.resmgr - Downloading resource {'url': 'https://qurator-data.de/calamari-models/GT4HistOCR/2019-12-11T11_10+0100/model.tar.xz', 'type': 'tarball', 'name': 'qurator-gt4histocr-1.0', 'description': 'Calamari model trained with GT4HistOCR', 'size': 90275264, 'path_in_archive': '.', 'version_range': '>= 1.0.0', 'parameter_usage': 'as-is'}
INFO ocrd.resource_manager._download_impl - Downloading https://qurator-data.de/calamari-models/GT4HistOCR/2019-12-11T11_10+0100/model.tar.xz to download.tar.xx
  [####################################]  100%          INFO ocrd.resource_manager.download - Extracting tarball
INFO ocrd.resource_manager.download - Copying '.' from tarball to /.local/share/ocrd-resources/ocrd-calamari-recognize/qurator-gt4histocr-1.0

Traceback (most recent call last):
  File "/venv/bin/ocrd", line 8, in <module>
    sys.exit(cli())
  File "/venv/lib/python3.6/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/venv/lib/python3.6/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/venv/lib/python3.6/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/venv/lib/python3.6/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/venv/lib/python3.6/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/venv/lib/python3.6/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/venv/lib/python3.6/site-packages/ocrd/cli/resmgr.py", line 137, in download
    progress_cb=lambda delta: bar.update(delta)
  File "/venv/lib/python3.6/site-packages/ocrd/resource_manager.py", line 225, in download
    copytree(path_in_archive, str(fpath))
  File "/usr/lib/python3.6/shutil.py", line 321, in copytree
    os.makedirs(dst)
  File "/usr/lib/python3.6/os.py", line 220, in makedirs
    mkdir(name, mode)
FileExistsError: [Errno 17] File exists: '/.local/share/ocrd-resources/ocrd-calamari-recognize/qurator-gt4histocr-1.0'

Looks like overwrite is not implemented properly.