add telescope, haskell-tools and a C language server

nvim/init.vim

@@ -8,6 +8,7 @@ set expandtab
 set shiftwidth=4
 set autoindent
 set completeopt=menu,menuone,noselect
+
 filetype plugin on
 
 lua require('plugins')

nvim/lua/haskell-config.lua

@@ -0,0 +1,21 @@
+local ht = require('haskell-tools')
+local def_opts = { noremap = true, silent = true, }
+ht.setup {
+  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)
+    end,
+  },
+}
+-- Suggested keymaps that do not depend on haskell-language-server
+-- Toggle a GHCi repl for the current package
+vim.keymap.set('n', '<leader>rr', ht.repl.toggle, def_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, def_opts)

nvim/lua/nvim-lsp-config.lua

@@ -41,3 +41,5 @@ require('lspconfig')['pyright'].setup {
     on_attach = on_attach,
     flags = lsp_flags,
 }
+
+require'lspconfig'.clangd.setup{}

nvim/lua/plugins.lua

@@ -34,14 +34,22 @@ return require('packer').startup(function(use)
         use 'nvim-treesitter/nvim-treesitter'
 
         use 'neovim/nvim-lspconfig' -- Configurations for Nvim LSP
+
+        -- (batch)commenting tool
         use 'preservim/nerdcommenter'
 
         use "lukas-reineke/indent-blankline.nvim"
 
+        -- themeing
         use "EdenEast/nightfox.nvim"
 
+        -- thin bar indicating an arbitray character limit
         use "lukas-reineke/virt-column.nvim"
 
+        -- fuzzy file finder
+        use 'nvim-telescope/telescope.nvim'
+
+        -- autocompletion engine, plugs into lsp
         use {
             "hrsh7th/nvim-cmp",
             requires = {
@@ -53,6 +61,7 @@ return require('packer').startup(function(use)
             }
         }
 
+        -- renders images in nvim
         use {
             'samodostal/image.nvim',
             requires = {
@@ -61,6 +70,17 @@ return require('packer').startup(function(use)
             },
         }
 
+        use {
+            'mrcjkb/haskell-tools.nvim',
+            requires = {
+                'nvim-lua/plenary.nvim',
+                'nvim-telescope/telescope.nvim'
+            },
+            branch = '1.x.x',
+        }
+
+        use 'dense-analysis/ale'
+
         vim.cmd([[
         augroup packer_user_config
             autocmd!
@@ -74,9 +94,14 @@ return require('packer').startup(function(use)
         require('nvim-tree-config')
         require('nvim-cmp-config')
         require('image-config')
+        require('haskell-config')
+        require('telescope-config')
         require('lualine').setup()
         require("virt-column").setup()
 
+
+        vim.g.ale_linters = { haskell =  {'hlint', 'hdevtools', 'hfmt'} }
+
         if packer_bootstrap then
             require('packer').sync()
         end

nvim/lua/telescope-config.lua

@@ -0,0 +1,8 @@
+require('telescope').setup()
+
+local builtin = require('telescope.builtin')
+
+vim.keymap.set('n', '<leader>ff', builtin.find_files, {})
+vim.keymap.set('n', '<leader>fg', builtin.live_grep, {})
+vim.keymap.set('n', '<leader>fb', builtin.buffers, {})
+vim.keymap.set('n', '<leader>fh', builtin.help_tags, {})