awesome VS bedrocklinux-userland

Try this list https://github.com/firasuke/awesome

Stuff like Business Card Linux might be worth a look. There's some useful links here

Other projects that could be worth a look are Kiss, Crux, Exherbo & Void...there's a few other pointers in this list.

Gentoo's quite a complex beast, you could look at simpler stuff with code a single human has a chance of understanding. mkroot, Kiss, Glaucus, Sta.li, few more here

If you are interested in the nuts an bolts of operating systems there's a nice list of interesting projects here.

https://github.com/firasuke/awesome (last updated yesterday)

If you search on this link there are a few attempts to use the linux kernel with a bsd userland.

Glaucus is another one man project, his Github site has a lot of good info and links to other awesome projects

Back when I used a debian based distribution I made use of https://bedrocklinux.org/ to make use of the AUR. It's not for everyone though.

Now this is interesting... apparently it is possible to run Nix AKA "The Nix Package Manager" on Alpine -- despite the fact that Alpine is Busybox and Musl based and NixOS is Coreutils and Glibc based!

Well done Nix engineers and contributors!

(I may switch to Alpine w/Nix Package Manager in the future, depending on how well it works!)

Related:

Bedrock Linux: https://bedrocklinux.org/

Sure, just install Bedrock Linux and add the Arch stratum on top

There's a Bedrock Linux distro already...

Bedrock Linux. It is allows you to make a system out of various seemingly-incompatible parts of other distros. I haven't gotten around to trying it myself, but it's really cool.

If you want to actually use multiple distributions at once integrated tightly into each other (like using Ubuntu with AUR packages) I highly recommend https://bedrocklinux.org/. It uses some chroot and symbolic link magic to share files across filesystems.