I really like the idea of this, and I go back and forth on this at times.
Philosophically, I think there is certain benefit to separating source-code from the idea of release artifacts, which makes me lean toward using an artifact repository for version management, rather than source-control.
Somewhere in the middle, there are tools that shoe-horn Git into being an artifact repository by abusing LFS, which I find intriguing. See gpm, for example.
I took a PL class in college, and we used Scheme. Ever since then, I noticed the concepts that I learned in that class seeping into other PLs. At the time I was programming Java 7 and JavaScript (ECMAScript 6). As soon as Java 8 hit, they had their stream API, and around the same time TC39 started adding FP-influenced APIs to JS.
My exposure to FP has not been "pure", but I have really enjoyed its influence in the languages that I use every day (Rust being the latest).