Slackware Linux, is my favorite OS, after living for many years with Gentoo, Devuan, Debian, and Arch before that, and dabbling in many others, on desktop and on the server. I have enjoyed the simplicity of Slackware, its stability, and the ease of understanding and modifying it, without it fighting me and breaking my changes all the time. I maintain some Slackware software packages on the SlackBuilds[1] website. If you are facing issues with pre-compiled software demanding newer glibc library versions, you may be interested in looking into how I get Signal[2] binaries to work there by patching their ELF headers to override the dynamic linker and glibc libraries, allowing the usage of more up to date versions of them, without updating the base system defaults.