Conditionally print certificate info #367
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The cryptography package (which pyOpenSSL depends on) doesn't support being loaded in multiple sub interpreters from version 41.0.0. Doing it in previous versions seemed to work, but could apparenly cause soundness issues, so it errors out from version 41.0.0. Note that this isn't a change in the cryptography package, but in pyo3 from version 0.17.0, which cryptography uses. This causes the script to fail when reloading it, or if you load it after another script with the same dependency. However, since pyOpenSSL is only used to print certificate info, wrap it in a try and skip printing info instead of crashing if pyOpenSSL can't be imported. There is another issue with a dependency of matrix-nio using pyo3 (rpds-py via jsonschema), but this at least helps with part of the problem. See poljar#357 for more details.
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The cryptography package (which pyOpenSSL depends on) doesn't support being loaded in multiple sub interpreters from version 41.0.0. Doing it in previous versions seemed to work, but could apparenly cause soundness issues, so it errors out from version 41.0.0. Note that this isn't a change in the cryptography package, but in pyo3 from version 0.17.0, which cryptography uses.
This causes the script to fail when reloading it, or if you load it after another script with the same dependency. However, since pyOpenSSL is only used to print certificate info, wrap it in a try and skip printing info instead of crashing if pyOpenSSL can't be imported.
There is another issue with a dependency of matrix-nio using pyo3 (rpds-py via jsonschema), but this at least helps with part of the problem.
See #357 for more details.