Fix LSP and update plugins

- Structure LSP configuration code
- Since `lsp-zero` is deprecated, instead use `nvim-lspconfig`
- Use `nvim_lsp_signature_help` instead of `lsp_signature`

nvim/lua/config/bindings.lua

@@ -11,3 +11,4 @@ vim.keymap.set("n", "<leader>q", "<Cmd>bd<CR>")
 vim.keymap.set("n", "<leader>l", "<Cmd>bl<CR>")
 vim.keymap.set("n", "<leader>lb", "<Cmd>VGit toggle_live_blame<CR>")
 vim.keymap.set("n", "<leader>bp", "<Cmd>VGit buffer_blame_preview<CR>")
+

nvim/lua/config/editor.lua

@@ -3,9 +3,12 @@ vim.opt.softtabstop = 4
 vim.opt.shiftwidth = 4
 vim.opt.expandtab = true
 vim.opt.smartindent = true
+
 vim.opt.nu = false
 vim.opt.relativenumber = true
+
 vim.opt.wrap = false
+
 vim.opt.termguicolors = true
 vim.opt.swapfile = false
 vim.opt.backup = false

nvim/lua/config/lsp.lua

@@ -1,72 +1,25 @@
-local lsp = require("lsp-zero")
-local git = require("vgit")
-local sig = require("lsp_signature")
-local cmp = require("cmp")
-local cmp_action = require("lsp-zero").cmp_action()
+lsp = vim.lsp
+lsp_config = require('lspconfig')
+cmp_defcaps = require('cmp_nvim_lsp').default_capabilities()
 
-lsp.preset("recommended")
+snippet_engine = 'luasnip'
 
-require('mason').setup({})
-require('mason-lspconfig').setup({
-	ensure_installed = {'rust_analyzer'},
-	handlers = {
-		lsp.default_setup,
-	},
-})
-
-cmp.setup({
-	window = {
-		completion = cmp.config.window.bordered(),
-		documentation = cmp.config.window.bordered(),
-	},
-	mapping = cmp.mapping.preset.insert({
-		['<C-p>'] = cmp_action.luasnip_jump_backward(),
-		['<C-n>'] = cmp_action.luasnip_jump_forward(),
-		['<tab>'] = cmp.mapping.confirm({ select = true }),
-		['<C-space>'] = cmp.mapping.complete(),
-	})
-})
-
-lsp.set_preferences({
-	sign_icons = { }
-})
-
-lsp.set_sign_icons({
-  error = '',
-  warn = '',
-  hint = '',
-  info = '',
-})
-
-lsp.on_attach(function(client, bufnr) 
-	local opts = {buffer = bufnr, remap = false}
-
-	vim.keymap.set("n", "gd", function() vim.lsp.buf.definition() end, opts)
-	vim.keymap.set("n", "K", function() vim.lsp.buf.hover() end, opts)
-	vim.keymap.set("n", "<leader>vws", function() vim.lps.buf.workspace_symbol() end, opts)
-	vim.keymap.set("n", "<leader>vd", function() vim.diagnostic.open_float() end, opts)
-	vim.keymap.set("n", "[d", function() vim.diagnostic.goto_next() end, opts)
-	vim.keymap.set("n", "]d", function() vim.diagnostic.goto_prev() end, opts)
-	vim.keymap.set("n", "<leader>vca", function() vim.diagnostic.code_action() end, opts)
-	vim.keymap.set("n", "<leader>vrr", function() vim.diagnostic.references() end, opts)
-	vim.keymap.set("n", "<leader>vrn", function() vim.diagnostic.rename() end, opts)
-	vim.keymap.set("n", "<C-h>", function() vim.diagnostic.signature_help() end, opts)
-end)
-
-
-lsp.setup()
--- sig.setup({
---    hint_enable = false,
---    fix_pos = ,
---    always_trigger = true,
---    handler_opts = {
---        border = "rounded"   -- double, rounded, single, shadow, none, or a table of borders
---    },
---})
-git.setup({
-    settings = {
-        signs = {
-            priority = 0,
+vim.opt.completeopt = {'menu', 'menuone', 'noselect'}
+vim.diagnostic.config({
+    signs = { 
+        text = { 
+            [vim.diagnostic.severity.ERROR] = '', 
+            [vim.diagnostic.severity.WARN] = '',
+            [vim.diagnostic.severity.HINT] = '',
+            [vim.diagnostic.severity.INFO] = '',
         },
-    }
+    },
+    virtual_text = true,
+    severity_sort = true,
 })
+
+require('lsp.mason')
+require('lsp.cmp')
+require('lsp.pylsp')
+require('lsp.rust')
+require('lsp.git')

nvim/lua/config/theme.lua

@@ -2,7 +2,7 @@ require('nightfox').setup({
     options = {
         transparent = true,      -- Disable setting background
         terminal_colors = true,  -- Set terminal colors (vim.g.terminal_color_*) used in `:terminal`
-        dim_inactive = false,    -- Non focused panes set to alternative background
+        dim_inactive = false,    -- Non-focused panes set to alternative background
         module_default = true,   -- Default enable value for modules 
     },
     palettes = {

nvim/lua/config/treesitter.lua

@@ -1,6 +1,6 @@
 require'nvim-treesitter.configs'.setup {
 	-- A list of parser names, or "all" (the five listed parsers should always be installed)
-	ensure_installed = { "c", "lua", "vim", "vimdoc", "query" , "rust" },
+	ensure_installed = { "c", "lua", "vim", "vimdoc", "query" , "rust", "python" },
 
 	-- Install parsers synchronously (only applied to `ensure_installed`)
 	sync_install = false,

nvim/lua/lsp/cmp.lua

@@ -0,0 +1,25 @@
+local cmp = require('cmp')
+local sneng = require(snippet_engine)
+
+cmp.setup({
+    snippet = {
+      expand = function(args)
+        sneng.lsp_expand(args.body)
+      end,
+    },
+	window = {
+		completion = cmp.config.window.bordered(),
+		documentation = cmp.config.window.bordered(),
+	},
+	mapping = cmp.mapping.preset.insert({
+        ['<C-p>'] = cmp.mapping.scroll_docs(-4),
+        ['<C-n>'] = cmp.mapping.scroll_docs(4),
+		['<tab>'] = cmp.mapping.confirm({ select = true }),
+		['<C-space>'] = cmp.mapping.complete(),
+    }),
+    sources = cmp.config.sources({
+        { name = 'nvim_lsp' },
+        { name = 'nvim_lsp_signature_help' },
+        { name = sneng_name },
+    })
+})

nvim/lua/lsp/git.lua

@@ -0,0 +1,7 @@
+require('vgit').setup({
+    settings = {
+        signs = {
+            priority = 0,
+        },
+    }
+})

nvim/lua/lsp/mason.lua

@@ -0,0 +1,4 @@
+require('mason').setup({})
+require('mason-lspconfig').setup({
+	ensure_installed = {'rust_analyzer', 'pylsp'},
+})

nvim/lua/lsp/pylsp.lua

@@ -0,0 +1,4 @@
+lsp.config('pylsp', {
+    capabilities = cmp_defcaps,
+})
+lsp.enable('pylsp')

nvim/lua/lsp/rust.lua

@@ -0,0 +1,11 @@
+lsp.config('rust_analyzer', {
+    capabilities = cmp_defcaps,
+    settings = {
+        ['rust-analyzer'] = {
+            diagnostics = {
+                enable = true;
+            }
+        }
+    }
+})
+lsp.enable('rust_analyzer')

nvim/lua/plugins.lua

@@ -7,55 +7,49 @@ return require('packer').startup(function(use)
     -- Packer can manage itself
     use('wbthomason/packer.nvim')
  
-
     use('olimorris/onedarkpro.nvim')
     use('SapphirusBeryl/nightfox.nvim')
     use('nvim-tree/nvim-web-devicons')
 
-    use('nvim-treesitter/playground');
-    use('nvim-treesitter/nvim-treesitter', {run = ':TSUpdate'})
-
     use('mbbill/undotree')
    
-    use('williamboman/mason.nvim')
-    use('williamboman/mason-lspconfig.nvim')
-
-
     use {
-        'nvim-telescope/telescope.nvim', tag = '0.1.5',
-        requires = { {'nvim-lua/plenary.nvim'} }
-    }
-
-    use {
-        "nvim-neo-tree/neo-tree.nvim",
-        branch = "v3.x",
+        'neovim/nvim-lspconfig', 
         requires = {
-            "nvim-lua/plenary.nvim",
-            "nvim-tree/nvim-web-devicons", -- not strictly required, but recommended
-            "MunifTanjim/nui.nvim",
-            -- "3rd/image.nvim", -- Optional image support in preview window: See `# Preview Mode` for more information
-        }
-    }
+            -- Mason Package Manager
+            {'williamboman/mason.nvim'},
+            {'williamboman/mason-lspconfig.nvim'},
 
-    use {
-        'VonHeikemen/lsp-zero.nvim',
-        branch = 'v3.x',
-        requires = {
-            --- Uncomment the two plugins below if you want to manage the language servers from neovim
-            -- {'williamboman/mason.nvim'},
-            -- {'williamboman/mason-lspconfig.nvim'},
-
-            -- LSP Support
-            {'neovim/nvim-lspconfig'},
             -- Autocompletion
             {'hrsh7th/nvim-cmp'},
             {'hrsh7th/cmp-nvim-lsp'},
+            {'hrsh7th/cmp-nvim-lsp-signature-help'},
             {'L3MON4D3/LuaSnip'},
         }
     }
 
     use { 
-        "ray-x/lsp_signature.nvim",
+        'nvim-treesitter/nvim-treesitter',
+        run = ':TSUpdate',
+    }
+
+    use {
+        'nvim-telescope/telescope.nvim',
+        tag = '0.1.x',
+        requires = {
+            {'nvim-lua/plenary.nvim'} 
+        }
+    }
+
+    use {
+        'nvim-neo-tree/neo-tree.nvim',
+        branch = 'v3.x',
+        requires = { 
+            'nvim-lua/plenary.nvim',
+            'nvim-tree/nvim-web-devicons', -- not strictly required, but recommended
+            'MunifTanjim/nui.nvim',
+            -- '3rd/image.nvim', -- Optional image support in preview window: See `# Preview Mode` for more information
+        }
     } 
 
     use {