use flake provided packages

flake.lock

@@ -210,6 +210,21 @@
       }
     },
     "flake-utils_5": {
+      "locked": {
+        "lastModified": 1667395993,
+        "narHash": "sha256-nuEHfE/LcWyuSWnS8t12N1wc105Qtau+/OdUAjtQ0rA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "5aed5285a952e0b949eb3ba02c12fa4fcfef535f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_6": {
       "locked": {
         "lastModified": 1644229661,
         "narHash": "sha256-1YdnJAsNy69bpcjuoKdOYQX0YxZBiCYZo4Twxerqv7k=",
@@ -419,6 +434,27 @@
         "type": "github"
       }
     },
+    "neovim": {
+      "inputs": {
+        "flake-utils": "flake-utils_4",
+        "nixpkgs": "nixpkgs_6"
+      },
+      "locked": {
+        "dir": "contrib",
+        "lastModified": 1676603980,
+        "narHash": "sha256-EWHGiO/1dulYfzdUnxXqW6nu79T+soBC/YS0tZPtlQ0=",
+        "owner": "neovim",
+        "repo": "neovim",
+        "rev": "371a74e4e1685f21e83c70eb8f0bd05c2ce24e49",
+        "type": "github"
+      },
+      "original": {
+        "dir": "contrib",
+        "owner": "neovim",
+        "repo": "neovim",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1673540789,
@@ -532,6 +568,22 @@
       }
     },
     "nixpkgs_6": {
+      "locked": {
+        "lastModified": 1671983799,
+        "narHash": "sha256-Z2Ro6hFPZHkBqkVXY5/aBUzxi5xizQGvuHQ9+T5B/ks=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "fad51abd42ca17a60fc1d4cb9382e2d79ae31836",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_7": {
       "locked": {
         "lastModified": 1675940568,
         "narHash": "sha256-epG6pOT9V0kS+FUqd7R6/CWkgnZx2DMT5Veqo+y6G3c=",
@@ -547,7 +599,7 @@
         "type": "github"
       }
     },
-    "nixpkgs_7": {
+    "nixpkgs_8": {
       "locked": {
         "lastModified": 1671271357,
         "narHash": "sha256-xRJdLbWK4v2SewmSStYrcLa0YGJpleufl44A19XSW8k=",
@@ -619,9 +671,9 @@
     "pre-commit-hooks_3": {
       "inputs": {
         "flake-compat": "flake-compat_2",
-        "flake-utils": "flake-utils_4",
+        "flake-utils": "flake-utils_5",
         "gitignore": "gitignore_2",
-        "nixpkgs": "nixpkgs_7",
+        "nixpkgs": "nixpkgs_8",
         "nixpkgs-stable": "nixpkgs-stable_2"
       },
       "locked": {
@@ -651,7 +703,8 @@
         "hyprland": "hyprland",
         "hyprpaper": "hyprpaper",
         "master": "master",
-        "nixpkgs": "nixpkgs_6",
+        "neovim": "neovim",
+        "nixpkgs": "nixpkgs_7",
         "pre-commit-hooks": "pre-commit-hooks_3",
         "stable": "stable",
         "utils": "utils_2"
@@ -690,7 +743,7 @@
     },
     "utils_2": {
       "inputs": {
-        "flake-utils": "flake-utils_5"
+        "flake-utils": "flake-utils_6"
       },
       "locked": {
         "lastModified": 1657226504,

flake.nix

@@ -48,6 +48,8 @@
 
     emacs.url = "git+ssh://git@gitea.moritzboeh.me/moritz/emacs.git?ref=main";
 
+    neovim.url = "github:neovim/neovim?dir=contrib";
+
     # Hyprland
     hyprland.url = "github:hyprwm/Hyprland";
     hyprpaper.url = "github:hyprwm/hyprpaper";
@@ -70,12 +72,10 @@
       overlay = import ./overlays { inherit inputs; };
 
       channels.nixpkgs.overlaysBuilder = channels: [
-        inputs.agenix.overlays.default
         inputs.emacs.overlays.default
         inputs.howdy.overlays.default
         inputs.hypr-contrib.overlays.default
         inputs.hyprland.overlays.default
-        inputs.hyprpaper.overlays.default
         inputs.utils.overlay
         self.overlay
       ];

modules/programs/nvim/default.nix

@@ -20,22 +20,33 @@ in
   config = mkIf cfg.enable {
     home-manager.users.moritz.programs.neovim = {
       enable = true;
+      package = pkgs.neovim-nightly;
       vimAlias = true;
       vimdiffAlias = true;
       withNodeJs = true;
       withPython3 = true;
       extraLuaConfig = builtins.readFile ./init.lua;
+      extraPackages = with pkgs; [
+        sumneko-lua-language-server
+        nil
+      ];
       plugins = with pkgs.vimPlugins; [
         catppuccin-nvim
+        cmp-nvim-lsp
         dashboard-nvim
         neogit
         noice-nvim
         nui-nvim # for noice-nvim
+        nvim-cmp
+        nvim-lspconfig
         nvim-treesitter.withAllGrammars
         nvim-web-devicons # for dashboard-nvim
         plenary-nvim # for telescope, neogit
         telescope-nvim
         which-key-nvim
+        cmp_luasnip
+        luasnip
+        lsp_lines-nvim
       ];
     };
   };

modules/programs/nvim/init.lua

@@ -33,11 +33,13 @@ vim.opt.updatetime = 300
 vim.opt_local.spell = true
 vim.opt_local.spelllang = { "en", "de_20" } -- all English regions and new German spelling
 
--- plugins
 require("catppuccin").setup({
-	flavour = "macchiato",
+	compile_path = vim.fn.stdpath("cache") .. "/catppuccin", -- fix issue of writing to nix store
+	integrations = {
+		which_key = true,
+	},
 })
-vim.cmd.colorscheme("catppuccin")
+vim.cmd.colorscheme("catppuccin-macchiato")
 
 vim.o.timeout = true
 vim.o.timeoutlen = 300
@@ -75,7 +77,7 @@ require("neogit").setup({
 	disable_commit_confirmation = true,
 })
 wk.register({
-  g = { "<cmd>Neogit<cr>", "git" }
+	g = { "<cmd>Neogit<cr>", "git" },
 }, { prefix = "<leader>" })
 
 require("nvim-treesitter.configs").setup({
@@ -86,3 +88,127 @@ require("nvim-treesitter.configs").setup({
 		additional_vim_regex_highlighting = true,
 	},
 })
+
+local cmp = require("cmp")
+local luasnip = require("luasnip")
+cmp.setup({
+	snippet = {
+		-- REQUIRED - you must specify a snippet engine
+		expand = function(args)
+			require("luasnip").lsp_expand(args.body)
+		end,
+	},
+	mapping = cmp.mapping.preset.insert({
+		["<C-b>"] = cmp.mapping.scroll_docs(-4),
+		["<C-f>"] = cmp.mapping.scroll_docs(4),
+		["<C-Space>"] = cmp.mapping.complete(),
+		["<C-e>"] = cmp.mapping.abort(),
+		["<CR>"] = cmp.mapping.confirm({ select = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
+		["<Tab>"] = cmp.mapping(function(fallback)
+			if cmp.visible() then
+				cmp.select_next_item()
+			elseif luasnip.expand_or_jumpable() then
+				luasnip.expand_or_jump()
+			else
+				fallback()
+			end
+		end, { "i", "s" }),
+		["<S-Tab>"] = cmp.mapping(function(fallback)
+			if cmp.visible() then
+				cmp.select_prev_item()
+			elseif luasnip.jumpable(-1) then
+				luasnip.jump(-1)
+			else
+				fallback()
+			end
+		end, { "i", "s" }),
+	}),
+	sources = {
+		{ name = "nvim_lsp" },
+		{ name = "luasnip" },
+		{ name = "buffer" },
+	},
+})
+
+-- The nvim-cmp almost supports LSP's capabilities so You should advertise it to LSP servers..
+local capabilities = require("cmp_nvim_lsp").default_capabilities()
+
+local lspconfig = require("lspconfig")
+local on_attach_def = function(_, bufnr)
+	wk.register({
+		K = { vim.lsp.buf.hover, "show info" },
+		["<leader>l"] = {
+			name = "lsp",
+			d = { vim.diagnostic.open_float, "open diagnostic window" },
+			n = { vim.diagnostic.goto_next, "next error" },
+			p = { vim.diagnostic.goto_prev, "prev error" },
+			c = { vim.lsp.buf.code_action, "code action" },
+			r = { vim.lsp.buf.rename, "rename" },
+			f = {
+				function()
+					vim.lsp.buf.format({ async = true })
+				end,
+				"format",
+			},
+		},
+		g = {
+			name = "goto",
+			r = { vim.lsp.buf.references, "references" },
+			d = { vim.lsp.buf.definition, "definition" },
+			D = { vim.lsp.buf.declaration, "declaration" },
+			i = { vim.lsp.buf.implementation, "implementation" },
+			t = { vim.lsp.buf.type_definition, "type defininition" },
+		},
+	}, { noremap = true, silent = true, buffer = bufnr })
+end
+
+local servers = { "nil_ls", "pylsp" }
+for _, lsp in ipairs(servers) do
+	lspconfig[lsp].setup({
+		on_attach = on_attach_def,
+		capabilities = capabilities,
+		flags = {
+			debounce_text_changes = 100,
+		},
+	})
+end
+
+lspconfig.sumneko_lua.setup({
+	on_attach = on_attach_def,
+	capabilities = capabilities,
+	settings = {
+		Lua = {
+			runtime = {
+				-- Tell the language server which version of Lua you're using (most likely LuaJIT in the case of Neovim)
+				version = "LuaJIT",
+			},
+			diagnostics = {
+				-- Get the language server to recognize the `vim` global
+				globals = { "vim" },
+			},
+			workspace = {
+				-- Make the server aware of Neovim runtime files
+				library = vim.api.nvim_get_runtime_file("", true),
+				checkThirdParty = false,
+			},
+			-- Do not send telemetry data containing a randomized but unique identifier
+			telemetry = {
+				enable = false,
+			},
+		},
+	},
+})
+
+local lsp_lines = require("lsp_lines")
+lsp_lines.setup()
+-- Disable virtual_text since it's redundant due to lsp_lines.
+vim.diagnostic.config({
+	virtual_text = false,
+})
+wk.register({
+	t = {
+		name = "toggle",
+		l = { lsp_lines.toggle, "lsp lines" },
+	},
+	{ prefix = "<leader>" },
+})

overlays/default.nix

@@ -1,4 +1,8 @@
 { inputs }: final: prev: {
+  agenix = inputs.agenix.packages.${prev.system}.default;
+  hyprpaper = inputs.hyprpaper.packages.${prev.system}.default;
+  neovim-nightly = inputs.neovim.packages.${prev.system}.default;
+
   logseq-wayland = prev.symlinkJoin {
     name = "logseq-wayland";
     paths = [ prev.logseq ];