.dir-locals.el

(("dir1" . ((nil . ((dante-target . "target1")))))
 ("dir2" . ((nil . ((dante-target . "target2")))))
 ("dir3" . ((nil . ((dante-target . "target3")))))
 (nil . ((dante-repl-command-line
          . ("nix-shell" "--run"
(concat "cabal new-repl " dante-target " --builddir=dist/dante"))))))