[toolforge-weld] support back python 3.7
add pkg_resources fallback for when importlib is not available
Bug: T370932 Signed-off-by: Raymond Ndibe rolisaemeka-ctr@wikimedia.org
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add pkg_resources fallback for when importlib is not available
Bug: T370932 Signed-off-by: Raymond Ndibe rolisaemeka-ctr@wikimedia.org