Trying to get cmp completion plugin to work

nix/base-system/flake.nix

@@ -84,7 +84,13 @@ EOF";
                 packer-nvim
                 vim-lsp
                 vim-vsnip
-                coq_nvim
+                nvim-cmp
+                cmp-nvim-lua
+                cmp-nvim-lsp
+                cmp-vsnip
+                cmp-buffer
+                cmp-path
+                cmp-nvim-lsp-signature-help
                 vimspector
                 vimagit
                 hoon-vim

nix/base-system/init.lua

@@ -1,7 +1,7 @@
 -- theming
 -- Default options
-vim.opt.termguicolors = true
+--vim.opt.termguicolors = true
-vim.cmd.colorscheme 'duskfox'
+--vim.cmd.colorscheme 'duskfox'
 
 -- turn on relative line numbers
 vim.opt.relativenumber = true
@@ -52,7 +52,61 @@ vim.cmd([[
 au BufNewFile,BufRead *.hrl filetype indent off
 ]])
 
+----Set completeopt to have a better completion experience
+---- :help completeopt
+---- menuone: popup even when there's only one match
+---- noinsert: Do not insert text until a selection is made
+---- noselect: Do not select, force to select one from the menu
+---- shortness: avoid showing extra messages when using completion
+---- updatetime: set updatetime for CursorHold
+--vim.opt.completeopt = {'menuone', 'noselect', 'noinsert'}
+--vim.opt.shortmess = vim.opt.shortmess + { c = true}
+--vim.api.nvim_set_option('updatetime', 300) 
+--
 --https://github.com/neovim/nvim-lspconfig/blob/master/doc/server_configurations.md
+-- TODO(jwall): See about proper snippet support (ie. license comments?)
+
+local cmp = require('cmp')
+cmp.setup({
+  -- Enable LSP snippets
+  snippet = {
+    expand = function(args)
+        vim.fn["vsnip#anonymous"](args.body)
+    end,
+  },
+  mapping = cmp.mapping.preset.insert(),
+  -- Installed sources:
+  sources = cmp.config.sources(
+	{
+    	{ name = 'nvim_lsp', keyword_length = 3 },      -- from language server
+    	{ name = 'nvim_lsp_signature_help'},            -- display function signatures with current parameter emphasized
+	},
+    {
+		{ name = 'path' },                              -- file paths
+	},
+	{
+    	{ name = 'nvim_lua', keyword_length = 2},       -- complete neovim's Lua runtime API such vim.lsp.*
+    	{ name = 'buffer', keyword_length = 2 },        -- source current buffer
+    	{ name = 'vsnip', keyword_length = 2 },         -- nvim-cmp source for vim-vsnip 
+	}),
+  window = {
+      completion = cmp.config.window.bordered(),
+      documentation = cmp.config.window.bordered(),
+  },
+  formatting = {
+      fields = {'menu', 'abbr', 'kind'},
+      format = function(entry, item)
+          local menu_icon ={
+              nvim_lsp = 'λ',
+              vsnip = '⋗',
+              buffer = 'Ω',
+              path = '🖫',
+          }
+          item.menu = menu_icon[entry.source.name]
+          return item
+      end,
+  },
+})
 
 local caps = vim.tbl_deep_extend(
   'force',
@@ -61,6 +115,8 @@ local caps = vim.tbl_deep_extend(
 );
 
 local lspconfig = require("lspconfig")
+local capabilities = require('cmp_nvim_lsp').default_capabilities()
+
 -- Nix language server support
 lspconfig.nil_ls.setup{}
 
@@ -105,7 +161,9 @@ lspconfig.java_language_server.setup{}
 lspconfig.tsserver.setup{}
 
 -- Rust language server support
-lspconfig.rust_analyzer.setup{}
+lspconfig.rust_analyzer.setup{
+  capabilities = capabilities
+}
 
 -- lua language server setup.
 lspconfig.lua_ls.setup{
@@ -196,8 +254,6 @@ vim.cmd([[
 let g:coq_settings = { 'auto_start': 'shut-up', 'display.icons.mode': "none" }
 ]])
 
-require("coq")
-
 --Set completeopt to have a better completion experience
 -- :help completeopt
 -- menuone: popup even when there's only one match

nix/darwin/flake.lock

@@ -7,11 +7,11 @@
         "nixpkgs": "nixpkgs"
       },
       "locked": {
-        "lastModified": 1684153753,
+        "lastModified": 1690228878,
-        "narHash": "sha256-PVbWt3qrjYAK+T5KplFcO+h7aZWfEj1UtyoKlvcDxh0=",
+        "narHash": "sha256-9Xe7JV0krp4RJC9W9W9WutZVlw6BlHTFMiUP/k48LQY=",
         "owner": "ryantm",
         "repo": "agenix",
-        "rev": "db5637d10f797bb251b94ef9040b237f4702cde3",
+        "rev": "d8c973fd228949736dedf61b7f8cc1ece3236792",
         "type": "github"
       },
       "original": {
@@ -34,12 +34,12 @@
       },
       "locked": {
         "lastModified": 1,
-        "narHash": "sha256-zUkrSqkKiphniy9Dv8MJpsJKt4HMEoPIpoW6SQyzeOQ=",
+        "narHash": "sha256-uA4sSuHPv0RuNibC98a+mBh/GnMS1vXrwFIE1XP8AIs=",
-        "path": "/nix/store/f9c9966csi39qz43kg1j16w3phnkdj4d-source/nix/base-system",
+        "path": "/nix/store/pzjnc2vf0y96kai86a1m9m54m33lxwpq-source/nix/base-system",
         "type": "path"
       },
       "original": {
-        "path": "/nix/store/f9c9966csi39qz43kg1j16w3phnkdj4d-source/nix/base-system",
+        "path": "/nix/store/pzjnc2vf0y96kai86a1m9m54m33lxwpq-source/nix/base-system",
         "type": "path"
       }
     },
@@ -71,11 +71,11 @@
         "nixpkgs": "nixpkgs_6"
       },
       "locked": {
-        "lastModified": 1687691275,
+        "lastModified": 1692248770,
-        "narHash": "sha256-VVywT8ubStvDPF5TscDBokT3T0l3zsOzCW056noh5zc=",
+        "narHash": "sha256-tZeFpETKQGbgnaSIO1AGWD27IyTcBm4D+A9d7ulQ4NM=",
         "owner": "lnl7",
         "repo": "nix-darwin",
-        "rev": "25ae710ba3cd448c5d5678788d37f3d149378bc0",
+        "rev": "511177ffe8226c78c9cf6a92a7b5f2df3684956b",
         "type": "github"
       },
       "original": {
@@ -172,11 +172,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1687171271,
+        "lastModified": 1689068808,
-        "narHash": "sha256-BJlq+ozK2B1sJDQXS3tzJM5a+oVZmi1q0FlBK/Xqv7M=",
+        "narHash": "sha256-6ixXo3wt24N/melDWjq70UuHQLxGV8jZvooRanIHXw0=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "abfb11bd1aec8ced1c9bb9adfe68018230f4fb3c",
+        "rev": "919d646de7be200f3bf08cb76ae1f09402b6f9b4",
         "type": "github"
       },
       "original": {
@@ -287,11 +287,11 @@
         "rust-overlay": "rust-overlay"
       },
       "locked": {
-        "lastModified": 1687805703,
+        "lastModified": 1693791390,
-        "narHash": "sha256-/NsUv6EgH1FfgqyklpnHtUjfuGhMIMow0h1Iqqpf3QY=",
+        "narHash": "sha256-FnT7/iDcGLWSmzwDfD7RQwr7z5+U2j7YOqhR3UM3zrg=",
         "owner": "martinvonz",
         "repo": "jj",
-        "rev": "5e6dd17ed97a747c8615490f4fe3cdb8ed0ae238",
+        "rev": "e3c85d6ecc20ee4240cdf3ed80107ce7dc268abe",
         "type": "github"
       },
       "original": {
@@ -384,11 +384,11 @@
     },
     "nixpkgs_3": {
       "locked": {
-        "lastModified": 1687103638,
+        "lastModified": 1691683125,
-        "narHash": "sha256-dwy/TK6Db5W7ivcgmcxUykhFwodIg0jrRzOFt7H5NUc=",
+        "narHash": "sha256-FMU62G57HDbJwU+9V3q7I0mBaQYTYQdtPNlJt2t5/A4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "91430887645a0953568da2f3e9a3a3bb0a0378ac",
+        "rev": "4d2389b927696ef8da4ef76b03f2d306faf87929",
         "type": "github"
       },
       "original": {
@@ -441,11 +441,11 @@
     },
     "nixpkgs_7": {
       "locked": {
-        "lastModified": 1689326639,
+        "lastModified": 1693815579,
-        "narHash": "sha256-79zi0t83Dcc2dE0NuYZ+2hqtKXZN1yWVq5mtx8D2d7Y=",
+        "narHash": "sha256-fPnIQlr0DoH9Z1C3v7IL3OpzMsvODC3k3oGu69r38+Y=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "9fdfaeb7b96f05e869f838c73cde8d98c640c649",
+        "rev": "1e409aeb5a9798a36e1cca227b7f8b8f3176e04d",
         "type": "github"
       },
       "original": {
@@ -497,11 +497,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1687141659,
+        "lastModified": 1691719735,
-        "narHash": "sha256-ckvEuxejYmFTyFF0u9CWV8h5u+ubuxA7vYrOw/GXRXg=",
+        "narHash": "sha256-GhPn5EIhGt7aFwgC6RELZJC7mUIol9O0k7Dsf2Hu0AM=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "86302751ef371597d48951983e1a2f04fe78d4ff",
+        "rev": "ac9d8b2e9acc153145e6fa3c78f9ba458ae517bf",
         "type": "github"
       },
       "original": {
@@ -519,11 +519,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1689302058,
+        "lastModified": 1693793487,
-        "narHash": "sha256-yD74lcHTrw4niXcE9goJLbzsgyce48rQQoy5jK5ZK40=",
+        "narHash": "sha256-MS6CDyAC0sJMTE/pRYlfrhBnhlAPvEo43ipwf5ZNzHg=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "7b8dbbf4c67ed05a9bf3d9e658c12d4108bc24c8",
+        "rev": "f179280eed5eb93759c94bf3231fbbda28f894b7",
         "type": "github"
       },
       "original": {
@@ -541,11 +541,11 @@
         "nixpkgs": "nixpkgs_5"
       },
       "locked": {
-        "lastModified": 1687444516,
+        "lastModified": 1692759315,
-        "narHash": "sha256-2W3+qUZFGjbgIhCv6lXOulkwAWh6oqELThqRz8VkdjE=",
+        "narHash": "sha256-nRA6Oad/CwUdMXlHpv1wW1IY5Pp100BJvIscd1AlYbI=",
         "owner": "sile-typesetter",
         "repo": "sile",
-        "rev": "faf0b57f525cb8a6d9a4f2fa3b50888666dd7fd5",
+        "rev": "fa84d15c902df4859caff8af8325097022b62f3e",
         "type": "github"
       },
       "original": {