improve configuration of lsp-mode for haskell

seems like 'lsp' is not the right package to use, switched to lsp-mode and
use deferred to give time to nix-shell to do its magic

1 files changed, 2 insertions, 1 deletions

diff --git a/install.el b/install.el
index 938befa..f5712a4 100644
--- a/install.el
+++ b/install.el
@@ -34,4 +34,5 @@
           elm-mode
           terraform-mode
           nix-mode
-          nix-sandbox))
+          nix-sandbox
+          lsp-ui))