diff --git a/ftplugin/haskell.vim b/ftplugin/haskell.vim
new file mode 100644
index 0000000..8b057f4
--- /dev/null
+++ b/ftplugin/haskell.vim
@@ -0,0 +1 @@
+nnoremap <buffer> <localleader>x :term runhaskell %<cr>
diff --git a/ftplugin/rust.vim b/ftplugin/rust.vim
index 45a703e..4a3e937 100644
--- a/ftplugin/rust.vim
+++ b/ftplugin/rust.vim
@@ -1,2 +1,3 @@
 nnoremap <buffer> <localleader>x :term cargo run<cr>
 iabbrev print println!("{}",
+iabbrev debug println!("{:?}",
diff --git a/plugin/comment.vim b/plugin/comment.vim
index e96f3c7..3f2246e 100644
--- a/plugin/comment.vim
+++ b/plugin/comment.vim
@@ -18,6 +18,7 @@ let s:comment_map = {
             \ 'cmake': '#',
             \ 'scheme': ';;',
             \ 'yaml': '#'
+            \ 'haskell': '--'
             \ }
 
 let s:block_map = {