The Haskell tooling already supports statically linking in the dependencies, I maintain the Haskell stack for Solus and for pandoc we just have a single binary that only depends on libc, all other Haskell dependencies are statically linked inside the binary just like how Rust dependencies work. So it's definitely doable.
I think it's more of the distro's maintainers' choice. For Solus the amount of dependencies was just too much for me to handle so we resorted to static linking.
Why do some distro maintainers choose otherwise? I have seen some users complaint about this before, without any correction being done. So my guess is that there is something that forces those distro maintainers to make that choice.
I think it's more of the distro's maintainers' choice. For Solus the amount of dependencies was just too much for me to handle so we resorted to static linking.