Package: vim-runtime Version: 2:8.1.0875-5 Tags: patch This made it into https://github.com/sdiehl/haskell-vim-proto/blob/master/vim/syntax/cabal.vim#L74 three years ago but was apparently not incorporated into vim-runtime.
--- /usr/share/vim/vim82/syntax/cabal.vim 2020-10-27 21:38:24.000000000
-0400
+++ /tmp/cabal.vim 2020-11-01 11:14:57.123500824 -0500
@@ -81,6 +81,7 @@
\ branch
\ bug-reports
\ build-depends
+ \ build-tool-depends
\ build-tools
\ build-type
\ buildable
