Merge pull request 'Add nvim' (#33) from feature/neovim into master

Reviewed-on: #33

home.nix

@@ -17,6 +17,7 @@
     ./programs/tmux.nix
     ./programs/git.nix
     ./programs/libreoffice.nix
+    ./programs/nvim.nix
     ./wm/rofi.nix
     ./wm/cursor.nix
     ./wm/dconf.nix

programs/nvim.nix

@@ -0,0 +1,67 @@
+{ pkgs, ... }:
+
+{
+  programs.neovim = {
+    enable = true;
+
+    plugins = with pkgs.vimPlugins; [
+      catppuccin-nvim
+      tokyonight-nvim
+      nvim-lspconfig
+      nvim-cmp
+      cmp-nvim-lsp
+      cmp-buffer
+      cmp-path
+      plenary-nvim
+      telescope-nvim
+      (nvim-treesitter.withAllGrammars)
+      vim-nix
+    ];
+
+    extraLuaConfig = ''
+      vim.cmd("colorscheme catppuccin-mocha")
+      -- Basic settings
+      vim.o.number = true
+      vim.o.relativenumber = true
+
+      -- =========================
+      -- LSP (Neovim 0.11+ way)
+      -- =========================
+
+      -- Add cmp capabilities
+      local capabilities = require("cmp_nvim_lsp").default_capabilities()
+
+      vim.lsp.config("nil_ls", {
+        capabilities = capabilities,
+      })
+
+      vim.lsp.enable("nil_ls")
+
+      -- =========================
+      -- nvim-cmp
+      -- =========================
+
+      local cmp = require("cmp")
+
+      cmp.setup({
+        mapping = cmp.mapping.preset.insert({
+          ["<C-Space>"] = cmp.mapping.complete(),
+          ["<CR>"] = cmp.mapping.confirm({ select = true }),
+        }),
+        sources = {
+          { name = "nvim_lsp" },
+          { name = "buffer" },
+          { name = "path" },
+        }
+      })
+
+      -- =========================
+      -- Telescope
+      -- =========================
+
+      local builtin = require("telescope.builtin")
+      vim.keymap.set("n", "<leader>ff", builtin.find_files, {})
+      vim.keymap.set("n", "<leader>fg", builtin.live_grep, {})
+    '';
+  };
+}