diff --git a/configuration.nix b/configuration.nix
index 5aaba59..f8fcafe 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -34,9 +34,10 @@ inputs: let
         lspkind.enable = false;
         lightbulb.enable = true;
         lspsaga.enable = false;
-        nvimCodeActionMenu.enable = true;
+        nvimCodeActionMenu.enable = isMaximal;
         trouble.enable = true;
         lspSignature.enable = true;
+        lsplines.enable = isMaximal;
       };
 
       vim.debugger = {
diff --git a/docs/release-notes/rl-0.5.adoc b/docs/release-notes/rl-0.5.adoc
index 84d9843..f6416fb 100644
--- a/docs/release-notes/rl-0.5.adoc
+++ b/docs/release-notes/rl-0.5.adoc
@@ -37,3 +37,7 @@ https://github.com/notashelf[notashelf]:
 * Fixed mismatching zig language description
 
 * Added support for `statix` and `deadnix` through <<opt-vim.languages.nix.extraDiagnostics.types>>
+
+* Added lsp_lines plugin for showing diagnostic messages
+
+* Added a configuration option for choosing the leader key
diff --git a/flake.lock b/flake.lock
index 9c14e84..078c43f 100644
--- a/flake.lock
+++ b/flake.lock
@@ -613,6 +613,22 @@
         "type": "github"
       }
     },
+    "lsp-lines": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1684163755,
+        "narHash": "sha256-Zhf2xitLWtE+dWqhvWtLM1K1WdtBvkqqoRLSYIO42oY=",
+        "owner": "~whynothugo",
+        "repo": "lsp_lines.nvim",
+        "rev": "f53af96d4789eef39a082dbcce078d2bfc384ece",
+        "type": "sourcehut"
+      },
+      "original": {
+        "owner": "~whynothugo",
+        "repo": "lsp_lines.nvim",
+        "type": "sourcehut"
+      }
+    },
     "lsp-signature": {
       "flake": false,
       "locked": {
@@ -1421,6 +1437,7 @@
         "indent-blankline": "indent-blankline",
         "kommentary": "kommentary",
         "leap-nvim": "leap-nvim",
+        "lsp-lines": "lsp-lines",
         "lsp-signature": "lsp-signature",
         "lspkind": "lspkind",
         "lspsaga": "lspsaga",
diff --git a/flake.nix b/flake.nix
index 4a81e24..957010b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -108,6 +108,11 @@
       flake = false;
     };
 
+    lsp-lines = {
+      url = "sourcehut:~whynothugo/lsp_lines.nvim";
+      flake = false;
+    };
+
     null-ls = {
       url = "github:jose-elias-alvarez/null-ls.nvim";
       flake = false;
diff --git a/lib/types/plugins.nix b/lib/types/plugins.nix
index ccbde55..18ad20c 100644
--- a/lib/types/plugins.nix
+++ b/lib/types/plugins.nix
@@ -90,6 +90,7 @@ with lib; let
     "nvim-navic"
     "nvim-navbuddy"
     "copilot-cmp"
+    "lsp-lines"
   ];
   # You can either use the name of the plugin or a package.
   pluginType = with types;
diff --git a/modules/basic/config.nix b/modules/basic/config.nix
index d510505..6e4237c 100644
--- a/modules/basic/config.nix
+++ b/modules/basic/config.nix
@@ -142,6 +142,9 @@ in {
         set spell
         set spelllang=${toString cfg.spellChecking.language}
       ''}
+      ${optionalString (cfg.leaderKey != null) ''
+        let mapleader = "${toString cfg.leaderKey}"
+      ''}
     '';
   };
 }
diff --git a/modules/basic/module.nix b/modules/basic/module.nix
index ade7d10..3f8e49a 100644
--- a/modules/basic/module.nix
+++ b/modules/basic/module.nix
@@ -31,6 +31,12 @@ with builtins; {
       };
     };
 
+    leaderKey = mkOption {
+      type = with types; nullOr str;
+      default = null;
+      description = "The leader key to be used internally";
+    };
+
     colourTerm = mkOption {
       type = types.bool;
       default = true;
diff --git a/modules/lsp/default.nix b/modules/lsp/default.nix
index 7f13e40..e39e33a 100644
--- a/modules/lsp/default.nix
+++ b/modules/lsp/default.nix
@@ -15,5 +15,6 @@ _: {
     ./lsp-signature
     ./lightbulb
     ./lspkind
+    ./lsplines
   ];
 }
diff --git a/modules/lsp/lsplines/config.nix b/modules/lsp/lsplines/config.nix
new file mode 100644
index 0000000..8fe46d3
--- /dev/null
+++ b/modules/lsp/lsplines/config.nix
@@ -0,0 +1,20 @@
+{
+  config,
+  lib,
+  ...
+}:
+with lib;
+with builtins; let
+  cfg = config.vim.lsp;
+in {
+  config = mkIf (cfg.enable && cfg.lsplines.enable) {
+    vim.startPlugins = ["lsp-lines"];
+    vim.luaConfigRC.lsplines = nvim.dag.entryAfter ["lspconfig"] ''
+      require("lsp_lines").setup()
+
+      vim.diagnostic.config({
+        virtual_text = false,
+      })
+    '';
+  };
+}
diff --git a/modules/lsp/lsplines/default.nix b/modules/lsp/lsplines/default.nix
new file mode 100644
index 0000000..fa50897
--- /dev/null
+++ b/modules/lsp/lsplines/default.nix
@@ -0,0 +1,6 @@
+_: {
+  imports = [
+    ./config.nix
+    ./lsplines.nix
+  ];
+}
diff --git a/modules/lsp/lsplines/lsplines.nix b/modules/lsp/lsplines/lsplines.nix
new file mode 100644
index 0000000..2b3eec4
--- /dev/null
+++ b/modules/lsp/lsplines/lsplines.nix
@@ -0,0 +1,9 @@
+{lib, ...}:
+with lib;
+with builtins; {
+  options.vim.lsp = {
+    lsplines = {
+      enable = mkEnableOption "diagnostics using virtual lines on top of the real line of code. [lsp_lines]";
+    };
+  };
+}