Add support for haskell-ide-engine (#21)

2 files changed, 41 insertions, 0 deletions

diff --git a/lua/nvim_lsp.lua b/lua/nvim_lsp.lua
index c5eb0d01..74d547fa 100644
--- a/lua/nvim_lsp.lua
+++ b/lua/nvim_lsp.lua
@@ -6,6 +6,7 @@ require 'nvim_lsp/clangd'
 require 'nvim_lsp/elmls'
 require 'nvim_lsp/flow'
 require 'nvim_lsp/gopls'
+require 'nvim_lsp/hie'
 require 'nvim_lsp/pyls'
 require 'nvim_lsp/rls'
 require 'nvim_lsp/texlab'
diff --git a/lua/nvim_lsp/hie.lua b/lua/nvim_lsp/hie.lua
new file mode 100644
index 00000000..dac2f7c8
--- /dev/null
+++ b/lua/nvim_lsp/hie.lua
@@ -0,0 +1,40 @@
+local skeleton = require 'nvim_lsp/skeleton'
+local util = require 'nvim_lsp/util'
+local lsp = vim.lsp
+
+skeleton.hie = {
+  default_config = {
+    cmd = {"hie-wrapper"};
+    filetypes = {"haskell"};
+    root_dir = util.root_pattern("stack.yaml", "package.yaml", ".git");
+    log_level = lsp.protocol.MessageType.Warning;
+    settings = {};
+  };
+
+  docs = {
+    description = [[
+https://github.com/haskell/haskell-ide-engine
+
+the following init_options are supported (see https://github.com/haskell/haskell-ide-engine#configuration):
+```lua
+init_options = {
+  languageServerHaskell = {
+    hlintOn = bool;
+    maxNumberOfProblems = number;
+    diagnosticsDebounceDuration = number;
+    liquidOn = bool (default false);
+    completionSnippetsOn = bool (default true);
+    formatOnImportOn = bool (default true);
+    formattingProvider = string (default "brittany", alternate "floskell");
+  }
+}
+```
+        ]];
+
+    default_config = {
+      root_dir = [[root_pattern("stack.yaml", "package.yaml", ".git")]];
+    };
+  };
+};
+
+-- vim:et ts=2 sw=2