Currently we only collect the OS type, not actually the distribution.
Looking at the admin page on /admin/reports/telemetry - I'd assume that we need something other than just PHP_OS to get what we want. Otherwise it's either Linux or Windows, very likely "Linux" in 99% - which is pointless.

Options:
- php_uname()
- getenv()
... reduced to the info we need.
GitHub Issue #:
5199
Recent comments
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Thanks Alejandro. That was the clues I needed.
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