Fixing nvim-cmp, adding Racket support, etc.

.config/nvim/lua/keymap.lua

@@ -12,6 +12,7 @@ end
 
 -- Change leader to a comma
 vim.g.mapleader = ','
+vim.g.maplocalleader = ' '
 
 -----------------------------------------------------------
 -- General
@@ -130,6 +131,5 @@ map('n', '<leader>D', '<cmd>lua vim.lsp.buf.type_definition()<CR>')
 map('n', '<leader>rn', '<cmd>lua vim.lsp.buf.rename()<CR>')
 map('n', '<leader>ca', '<cmd>lua vim.lsp.buf.code_action()<CR>')
 map('n', '<leader>q', '<cmd>lua vim.lsp.diagnostic.set_loclist()<CR>')
-map('n', '<leader>e', '<cmd>lua vim.lsp.diagnostic.open_float()<CR>')
 map('n', '[c', '<cmd>lua vim.diagnostic.goto_prev { wrap = false }<CR>')
 map('n', ']c', '<cmd>lua vim.diagnostic.goto_next { wrap = false }<CR>')

.config/nvim/lua/packer_init.lua

@@ -67,13 +67,18 @@ return require('packer').startup(function(use)
     -- Neovim-native LSP Implementation
     use 'neovim/nvim-lspconfig'
 
+    -- Snippet engine is REQUIRED for nvim-cmp.
+    use 'L3MON4D3/LuaSnip'
+
     -- nvim-cmp - completion plugin, used for LSP and Metals
     use {
         'hrsh7th/nvim-cmp',
         requires = {
             'hrsh7th/cmp-nvim-lsp',
             'hrsh7th/cmp-path',
-            'hrsh7th/cmp-buffer'
+            'hrsh7th/cmp-buffer',
+            'saadparwaiz1/cmp_luasnip'
+            --'PaterJason/cmp-conjure'
         }
     }
 
@@ -139,4 +144,13 @@ return require('packer').startup(function(use)
         end
     }
 
+    -- Racket support
+    use 'benknoble/vim-racket'
+
+    -- Conjure: Supports all Lisps that I work with.
+    use {
+        'Olical/conjure',
+        ft = { 'rkt', 'racket' }
+    }
+
 end)

.config/nvim/lua/plugins/cmp.lua

@@ -1,13 +1,21 @@
 local cmp = require('cmp')
 
 cmp.setup{
+    snippet = {
+        -- REQUIRED - you must specify a snippet engine
+        expand = function(args)
+            require('luasnip').lsp_expand(args.body)
+        end,
+    },
     sources = {
         { name = 'nvim_lsp' },
+        { name = 'luasnip' },
         { name = 'path' },
         { name = 'buffer', option = { keyword_length = 4 }, },
     },
     mapping = {
-        ['<CR>'] = cmp.mapping.confirm({}),
+        ['<CR>'] = cmp.mapping.confirm({ select = true }),
+        ['<C-Space>'] = cmp.mapping.complete(),
         ['<Tab>'] = function(fallback)
             if cmp.visible() then
                 cmp.select_next_item()
@@ -24,3 +32,12 @@ cmp.setup{
         end,
     },
 }
+  -- Setup conjure, only for supported files
+cmp.setup.filetype('racket', {
+    sources = {
+        { name = 'conjure' },
+        { name = 'luasnip' },
+        { name = 'path' },
+        { name = 'buffer', option = { keyword_length = 4 }, },
+    }
+})