When comparing Adélie Linux vs Linux From Scratch, the Slant community recommends Linux From Scratch for most people. In the question“What are the best Linux distros that don't use systemd?” Linux From Scratch is ranked 19th while Adélie Linux is ranked 41st. The most important reason people chose Linux From Scratch is:
It is an opportunity for the learner to learn what's behind every piece of program in the system, because you will install and configure all the packages manually. It is also as an advantage to expand your knowledge by searching the possibilities of crafting your unique flavor, for example your own package manager and update schemes.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Simple packaging system
Built on Alpine's APKBUILD system, which is an accessible and simple packaging system. If you're familiar with Arch's ABS or Gentoo's ebuilds, APKBUILDs are a breeze.
Pro Is pure Python 3
There is a hard and fast rule against Python 2 software in the main repositories, with efforts focused on adapting software to use Python 3 where possible.
Pro Small and performant
A standard installation takes under 200 MB. Only the bare necessities are included.
Pro Inviting and receptive development team
The people building the distro are knowledgeable and helpful when issues arise. Merge requests are actively suggested and reviewed, and the developers thank users for taking the time to learn the distro.
Pro Best for learning the components, libraries and configurations of the whole system one-by-one
It is an opportunity for the learner to learn what's behind every piece of program in the system, because you will install and configure all the packages manually. It is also as an advantage to expand your knowledge by searching the possibilities of crafting your unique flavor, for example your own package manager and update schemes.
Pro For those who wonder what it takes to create an actual Linux distribution
It's a very useful learning experience; showing the user what is required and in what order, to obtain a running Linux system - from the inside out.
Cons
Con Not (yet) ready for Linux newbies
As of November 2018, there isn't an installer yet. If you're familiar with installing Arch or Gentoo (via chroot, fdisk, et al) then it's no big deal. An installer framework (called Horizon) is in the works.
Con Is pure Python 3
Python 2 support is not supported by the distro, so many older upstreams who haven't adapted to Python 3 yet will need their software patched to work (this is both a pro and a con).
Con Somewhat limited package set for servers
As of November 2018, it's still missing some server software. It's primarily a desktop-oriented distribution, but accepts server packages and progress has already been made on that front, including lighttpd, apache, and php-fpm. Contributors are already bringing more server software to the distro, including certbot, cgit, and Nextcloud.
Con Not recommended for Beginners
By creating a Linux system from scratch you will be managing and compiling all of the systems packages by hand, so advanced Linux knowledge is recommended.
Con Takes a while to create the system. Only for those people who would like to create their very own distribution, or just to understand what makes a Linux system tick.
Linux From Scratch, requires the user to download and compile, all the various required system libraries and programs in a ch-rooted environment. This is usually done from within an existing and already running Linux system. This is not really a con, just a note to the new user.