From d70887328ad4e0da3ea026f1abfd3698118897b2 Mon Sep 17 00:00:00 2001
From: Filippo Berto <berto.f@protonmail.com>
Date: Wed, 25 Oct 2023 15:14:57 +0200
Subject: [PATCH] WIP: vim lsp

---
 modules/hm/vim.nix | 34 ++++++++++++++++++++++++++++++----
 1 file changed, 30 insertions(+), 4 deletions(-)

diff --git a/modules/hm/vim.nix b/modules/hm/vim.nix
index 8bc7136..ecbcef9 100644
--- a/modules/hm/vim.nix
+++ b/modules/hm/vim.nix
@@ -16,10 +16,11 @@
         type = "lua";
         config = ''
           local lspconfig = require('lspconfig')
-          lspconfig.pylsp.setup {}
-          lspconfig.nil_ls.setup {}
-          lspconfig.rust_analyzer.setup {}
-          lspconfig.texlab.setup {}
+          local capabilities = require("cmp_nvim_lsp").default_capabilities()
+          lspconfig.pylsp.setup {capabilities=capabilities}
+          lspconfig.nil_ls.setup {capabilities=capabilities}
+          lspconfig.rust_analyzer.setup {capabilities=capabilities}
+          lspconfig.texlab.setup {capabilities=capabilities}
         '';
       }
       pkgs.vimPlugins.nvim-treesitter.withAllGrammars
@@ -28,6 +29,31 @@
       pkgs.vimPlugins.telescope-nvim
       pkgs.vimPlugins.gitsigns-nvim
       pkgs.vimPlugins.nvim-tree-lua
+
+      # completion
+      pkgs.vimPlugins.nvim-cmp
+
+      {
+        plugin = pkgs.vimPlugins.cmp-nvim-lsp;
+        type = "lua";
+        config = ''
+          local cmp = require("cmp")
+          cmp.setup({
+            mapping = cmp.mapping.preset.insert({
+              ["<C-b>"] = cmp.mapping.scroll_docs(-4),
+              ["<C-f>"] = cmp.mapping.scroll_docs(4),
+              ["<C-o>"] = cmp.mapping.complete(),
+              ["<C-e>"] = cmp.mapping.abort(),
+              ["<CR>"] = cmp.mapping.confirm({ select = true }),
+            }),
+            sources = cmp.config.sources({
+              { name = "nvim_lsp" },
+              { name = "buffer" }
+            })
+          })
+        '';
+      }
+
       # pkgs.vimPlugins.fugitive
       # pkgs.vimPlugins.surround
       # {