Hi,
According to recent messages, it seems manylinux2010 won't be ready soon. However, the baseline software in manylinux1 is becoming very old. As an example, a popular C++ library (Abseil - https://abseil.io/) requires a more recent glibc (see https://github.com/abseil/abseil-cpp/commit/add89fd0e4bfd7d874bb55b67f4e13bf8beca762#diff-9f9c7fefa83b53e16cd568e31f1bfcb9R81).
What do you think of publishing manylinux1 wheels that would require a more recent glibc? This is being discussed currently for the pyarrow package.