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What's the most obscure distro you can think of
(slrpnk.net)
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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You may wish to look into NixOS or GNU Guix as taking the same ideas to the logical conclusion, or stal/ix which aspires to take a more traditional approach and in that way is perhaps closer to Gobo. All three are very much alive and actively maintained, even thriving by some metrics.