From a5c7553632b043380491abd3251de72e8ac15d04 Mon Sep 17 00:00:00 2001
From: Maciej Jur <maciej@kamoshi.org>
Date: Mon, 10 Jul 2023 15:18:34 +0200
Subject: [PATCH] Add haskell tools

---
 nvim/ftplugin/haskell.lua       | 32 ++++++++++++++++++++++++++++++++
 nvim/lazy-lock.json             |  1 +
 nvim/lua/configs/treesitter.lua |  2 ++
 nvim/lua/plugins.lua            | 20 ++++++++++++++------
 4 files changed, 49 insertions(+), 6 deletions(-)
 create mode 100644 nvim/ftplugin/haskell.lua

diff --git a/nvim/ftplugin/haskell.lua b/nvim/ftplugin/haskell.lua
new file mode 100644
index 0000000..444ffa6
--- /dev/null
+++ b/nvim/ftplugin/haskell.lua
@@ -0,0 +1,32 @@
+local ht = require('haskell-tools')
+local def_opts = { noremap = true, silent = true, }
+ht.start_or_attach {
+  hls = {
+    on_attach = function(client, bufnr)
+      local opts = vim.tbl_extend('keep', def_opts, { buffer = bufnr, })
+      -- haskell-language-server relies heavily on codeLenses,
+      -- so auto-refresh (see advanced configuration) is enabled by default
+      vim.keymap.set('n', '<space>ca', vim.lsp.codelens.run, opts)
+      vim.keymap.set('n', '<space>hs', ht.hoogle.hoogle_signature, opts)
+      vim.keymap.set('n', '<space>ea', ht.lsp.buf_eval_all, opts)
+    end,
+  },
+}
+
+-- Suggested keymaps that do not depend on haskell-language-server:
+local bufnr = vim.api.nvim_get_current_buf()
+-- set buffer = bufnr in ftplugin/haskell.lua
+local opts = { noremap = true, silent = true, buffer = bufnr }
+
+-- Toggle a GHCi repl for the current package
+vim.keymap.set('n', '<leader>rr', ht.repl.toggle, opts)
+-- Toggle a GHCi repl for the current buffer
+vim.keymap.set('n', '<leader>rf', function()
+  ht.repl.toggle(vim.api.nvim_buf_get_name(0))
+end, def_opts)
+vim.keymap.set('n', '<leader>rq', ht.repl.quit, opts)
+
+-- Detect nvim-dap launch configurations
+-- (requires nvim-dap and haskell-debug-adapter)
+-- ht.dap.discover_configurations(bufnr)
+
diff --git a/nvim/lazy-lock.json b/nvim/lazy-lock.json
index 51979b1..9f39e48 100644
--- a/nvim/lazy-lock.json
+++ b/nvim/lazy-lock.json
@@ -1,4 +1,5 @@
 {
+  "haskell-tools.nvim": { "branch": "1.x.x", "commit": "2c8cb26417cb4ce6f4271efb72578576464a5424" },
   "kanagawa.nvim": { "branch": "master", "commit": "1749cea392acb7d1548a946fcee1e6f1304cd3cb" },
   "lazy.nvim": { "branch": "main", "commit": "da8b00581a52f5f87ad2aba9f52171fda7491f18" },
   "lualine.nvim": { "branch": "master", "commit": "05d78e9fd0cdfb4545974a5aa14b1be95a86e9c9" },
diff --git a/nvim/lua/configs/treesitter.lua b/nvim/lua/configs/treesitter.lua
index 52fffc8..e6b170d 100644
--- a/nvim/lua/configs/treesitter.lua
+++ b/nvim/lua/configs/treesitter.lua
@@ -16,6 +16,8 @@ return function()
       "markdown",
       -- nix
       "nix",
+      -- haskell
+      "haskell",
       -- latex
       "latex", "bibtex",
       -- misc
diff --git a/nvim/lua/plugins.lua b/nvim/lua/plugins.lua
index 2e9288a..181fd47 100644
--- a/nvim/lua/plugins.lua
+++ b/nvim/lua/plugins.lua
@@ -3,6 +3,14 @@ return {
     "nvim-telescope/telescope.nvim",
     dependencies = { "nvim-lua/plenary.nvim" },
   },
+  {
+    "nvim-treesitter/nvim-treesitter",
+    config = require "configs/treesitter",
+    build = ":TSUpdate",
+    init = function()
+      vim.treesitter.language.register("markdown", "mdx")
+    end
+  },
   {
     "neovim/nvim-lspconfig",
     config = require "configs/lspconfig",
@@ -12,12 +20,12 @@ return {
     config = require "configs/rust-tools",
   },
   {
-    "nvim-treesitter/nvim-treesitter",
-    config = require "configs/treesitter",
-    build = ":TSUpdate",
-    init = function()
-      vim.treesitter.language.register("markdown", "mdx")
-    end
+    "mrcjkb/haskell-tools.nvim",
+    dependencies = {
+      "nvim-lua/plenary.nvim",
+      "nvim-telescope/telescope.nvim",
+    },
+    branch = "1.x.x",
   },
   {
     "andweeb/presence.nvim",