init 5.10_rt with nkio nkmcu

hc

2023-12-06 d38611ca164021d018c1b23eee65bbebc09c63e0

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# Locally computed:
sha256    b769620c1b52d6c1548c6c4f055613f4eee3120ed8a5cff4ba4ffbbc8a582286  bitstring-3.1.5.tar.gz