diff --git a/README.md b/README.md
index ce56d35..dbce4c7 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,12 @@
 1. [Troubleshooting](5-troubleshooting)
    1. [`Write error: disk full;` during `nixos-install`](write-error-disk-full-during-nixos-install)
 1. [Impurities](6-impurities)
-1. [References](7-references)
+   1. [Currently known impurities](61-currently-known-impurities)
+   1. [Notes](62-notes)
+1. [Resources](7-resources)
+1. [Credits & Special thanks](8-credits-special-thanks)
+   1. [Major help](81-major-help)
+   1. [Additional help](82-additional-help)
 
 ## 1. About ❄️
 
@@ -136,9 +141,23 @@ mount -o remount,size=15G /tmp
 
 ## 6. Impurities 💩
 
-- Currently **none**! 🚀🚀
+I heavily dislike using the `--impure` flag, which is unfortunately required
+in certain use cases, and I go really out of my way to patch stuff and
+avoid using it.
 
-## 7. References 📚
+### 6.1 Currently known impurities
+
+- **none**! 🚀🚀
+
+### 6.2 Notes
+
+- [shadow-nix](https://github.com/NicolasGuilloux/shadow-nix) and all its
+  forks rely on impure imports of hashes, so I am maintaining my own fork
+  [tsandrini/shadow-nix](https://github.com/tsandrini/shadow-nix)
+- I was previously using [devenv](https://devenv.sh/), however, it still doesn't
+  work really well in a pure mode, so switched to a simple devshell instead.
+
+## 7. Resources 📚
 
 The whole nix ecosystem is in its foundations a revolutionary piece of
 software and once you get the hang of it you feel like you’ve really
@@ -164,3 +183,33 @@ manual.org?)
 - [Github code search: thanks to how the nix lang works the code search should be of a huge help, included an example](https://github.com/search?q=pkgs.writeShellScriptBin+language%3ANix&type=code&l=Nix)
 - [This is where flake-parts finally clicked for me, huge thanks to viperml~~](https://github.com/viperML/dotfiles)
 - [dc-tec/nixvim awesome nixvim config that got me started](https://github.com/dc-tec/nixvim/)
+
+## 8. Credits & Special thanks
+
+To reiterate the previous [Resources](7-resources) section, here are also some
+explicit shoutouts & thanks to the people from whom I have at some point in time
+taken some piece of code or have been inspired from. Huge thanks ❤️
+
+### 8.1 Major help
+
+These are people that are engrained in the nix community and whose work I/we
+use on a daily basis. I hope they will happily continue to be a part of the
+nix community and I thank them for all of their contributions.
+
+[edolstra](https://github.com/edolstra)
+-- [grahamc](https://github.com/grahamc)
+-- [domenkozar](https://github.com/domenkozar)
+-- [Mic92](https://github.com/Mic92)
+-- [hlissner](https://github.com/hlissner)
+-- [viperML](https://github.com/viperML)
+-- [roberth](https://github.com/roberth)
+-- [fufexan](https://github.com/fufexan)
+-- [NobbZ](https://github.com/NobbZ)
+
+### 8.2 Additional help
+
+Additional help with certain specific areas, inspiration or code snippets.
+
+[balsoft](https://github.com/balsoft)
+-- [dc-tec](https://github.com/dc-tec)
+-- [notusknot](https://github.com/notusknot/)
diff --git a/flake-parts/hosts/jetbundle/default.nix b/flake-parts/hosts/jetbundle/default.nix
index 92ae143..54d8e1b 100644
--- a/flake-parts/hosts/jetbundle/default.nix
+++ b/flake-parts/hosts/jetbundle/default.nix
@@ -138,7 +138,13 @@
   # NOTE for wireguard
   networking.wireguard.enable = true;
   networking.firewall = {
-    allowedUDPPorts = [ 51820 ];
+    allowedUDPPorts = [
+      51820
+      4321
+    ];
+    allowedTCPPorts = [
+      4321
+    ];
   };
 
   # If you intend to route all your traffic through the wireguard tunnel, the
diff --git a/flake-parts/modules/nixvim/default.nix b/flake-parts/modules/nixvim/default.nix
index f9c74e4..8afb8d1 100644
--- a/flake-parts/modules/nixvim/default.nix
+++ b/flake-parts/modules/nixvim/default.nix
@@ -53,11 +53,15 @@ in
     };
 
     plugins_editor_bufferline = importApply ./plugins/editor/bufferline.nix { inherit localFlake; };
+    plugins_editor_spectre = importApply ./plugins/editor/spectre.nix { inherit localFlake; };
     plugins_editor_copilot-lua = importApply ./plugins/editor/copilot-lua.nix { inherit localFlake; };
     plugins_editor_neo-tree = importApply ./plugins/editor/neo-tree.nix { inherit localFlake; };
     plugins_editor_noice = importApply ./plugins/editor/noice.nix { inherit localFlake; };
     plugins_editor_treesitter = importApply ./plugins/editor/treesitter.nix { inherit localFlake; };
     plugins_editor_undotree = importApply ./plugins/editor/undotree.nix { inherit localFlake; };
+    plugins_editor_render-markdown = importApply ./plugins/editor/render-markdown.nix {
+      inherit localFlake;
+    };
 
     plugins_cmp_cmp = importApply ./plugins/cmp/cmp.nix { inherit localFlake; };
     plugins_cmp_lspkind = importApply ./plugins/cmp/lspkind.nix { inherit localFlake; };
@@ -68,5 +72,6 @@ in
     plugins_lsp_lsp = importApply ./plugins/lsp/lsp.nix { inherit localFlake; };
     plugins_lsp_lspsaga = importApply ./plugins/lsp/lspsaga.nix { inherit localFlake; };
     plugins_lsp_trouble = importApply ./plugins/lsp/trouble.nix { inherit localFlake; };
+    plugins_lsp_otter = importApply ./plugins/lsp/otter.nix { inherit localFlake; };
   };
 }
diff --git a/flake-parts/modules/nixvim/neovide.nix b/flake-parts/modules/nixvim/neovide.nix
index b1bf040..4d152a1 100644
--- a/flake-parts/modules/nixvim/neovide.nix
+++ b/flake-parts/modules/nixvim/neovide.nix
@@ -47,15 +47,15 @@ in
           end
 
           map("n", "<C-=>", function()
-            neovideScale(0.1)
+            neovideScale(0.05)
           end)
 
           map("n", "<C-->", function()
-            neovideScale(-0.1)
+            neovideScale(-0.05)
           end)
 
           vim.g.neovide_transparency = 0.92
-          neovideScale(-0.3)
+          neovideScale(-0.35)
         end
       '';
     }
diff --git a/flake-parts/modules/nixvim/plugins/cmp/cmp.nix b/flake-parts/modules/nixvim/plugins/cmp/cmp.nix
index 50b94c3..53e738c 100644
--- a/flake-parts/modules/nixvim/plugins/cmp/cmp.nix
+++ b/flake-parts/modules/nixvim/plugins/cmp/cmp.nix
@@ -21,11 +21,17 @@
 }:
 let
   inherit (lib) mkIf mkMerge mkEnableOption;
-  inherit (localFlake.lib.modules) mkOverrideAtNixvimModuleLevel;
+  inherit (localFlake.lib.modules)
+    mkOverrideAtNixvimModuleLevel
+    mkOverrideAtNixvimProfileLevel
+    isModuleLoadedAndEnabled
+    ;
 
   cfg = config.tensorfiles.nixvim.plugins.cmp.cmp;
   _ = mkOverrideAtNixvimModuleLevel;
 
+  copilot-lua-check = isModuleLoadedAndEnabled config "tensorfiles.nixvim.plugins.editor.copilot-lua";
+
   get_bufnrs.__raw = ''
     function()
       local buf_size_limit = 1024 * 1024 -- 1MB size limit
@@ -53,6 +59,16 @@ in
       // {
         default = true;
       };
+
+    copilot-cmp = {
+      enable =
+        mkEnableOption ''
+          Enable the copilot-cmp integration.
+        ''
+        // {
+          default = true;
+        };
+    };
   };
 
   config = mkIf cfg.enable (mkMerge [
@@ -106,6 +122,7 @@ in
               {
                 name = "nvim_lsp";
                 priority = 1100;
+                # group_index = 2;
                 option = {
                   inherit get_bufnrs;
                 };
@@ -113,6 +130,7 @@ in
               {
                 name = "nvim_lsp_signature_help";
                 priority = 1000;
+                # group_index = 2;
                 option = {
                   inherit get_bufnrs;
                 };
@@ -120,6 +138,7 @@ in
               {
                 name = "nvim_lsp_document_symbol";
                 priority = 1000;
+                # group_index = 2;
                 option = {
                   inherit get_bufnrs;
                 };
@@ -181,6 +200,26 @@ in
       };
     }
     # |----------------------------------------------------------------------| #
+    (mkIf (cfg.copilot-cmp.enable && copilot-lua-check) {
+      plugins.copilot-lua = {
+        suggestion.enabled = mkOverrideAtNixvimProfileLevel false;
+        panel.enabled = mkOverrideAtNixvimProfileLevel false;
+      };
+
+      plugins.cmp.settings = {
+        sources = [
+          {
+            name = "copilot";
+            priority = 1200;
+            # group_index = 2;
+            option = {
+              inherit get_bufnrs;
+            };
+          }
+        ];
+      };
+    })
+    # |----------------------------------------------------------------------| #
   ]);
 
   meta.maintainers = with localFlake.lib.maintainers; [ tsandrini ];
diff --git a/flake-parts/modules/nixvim/plugins/editor/copilot-lua.nix b/flake-parts/modules/nixvim/plugins/editor/copilot-lua.nix
index 3174886..3766ae7 100644
--- a/flake-parts/modules/nixvim/plugins/editor/copilot-lua.nix
+++ b/flake-parts/modules/nixvim/plugins/editor/copilot-lua.nix
@@ -41,8 +41,15 @@ in
     {
       plugins.copilot-lua = {
         enable = _ true;
-        suggestion.autoTrigger = _ true;
-        copilotNodeCommand = _ "node";
+        # package = _ patched-copilot-lua;
+        suggestion = {
+          enabled = _ true;
+          autoTrigger = _ true;
+        };
+        # filetypes = {
+        #   "*" = true;
+        # };
+        # copilotNodeCommand = _ "node";
       };
     }
     # |----------------------------------------------------------------------| #
diff --git a/flake-parts/modules/nixvim/plugins/editor/render-markdown.nix b/flake-parts/modules/nixvim/plugins/editor/render-markdown.nix
new file mode 100644
index 0000000..96bdd43
--- /dev/null
+++ b/flake-parts/modules/nixvim/plugins/editor/render-markdown.nix
@@ -0,0 +1,56 @@
+# --- flake-parts/modules/nixvim/plugins/editor/render-markdown.nix
+#
+# Author:  tsandrini <tomas.sandrini@seznam.cz>
+# URL:     https://github.com/tsandrini/tensorfiles
+# License: MIT
+#
+# 888                                                .d888 d8b 888
+# 888                                               d88P"  Y8P 888
+# 888                                               888        888
+# 888888 .d88b.  88888b.  .d8888b   .d88b.  888d888 888888 888 888  .d88b.  .d8888b
+# 888   d8P  Y8b 888 "88b 88K      d88""88b 888P"   888    888 888 d8P  Y8b 88K
+# 888   88888888 888  888 "Y8888b. 888  888 888     888    888 888 88888888 "Y8888b.
+# Y88b. Y8b.     888  888      X88 Y88..88P 888     888    888 888 Y8b.          X88
+#  "Y888 "Y8888  888  888  88888P'  "Y88P"  888     888    888 888  "Y8888   88888P'
+{ localFlake }:
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  inherit (lib)
+    mkIf
+    mkMerge
+    mkEnableOption
+    ;
+  # inherit (localFlake.lib.modules) mkOverrideAtNixvimModuleLevel;
+
+  cfg = config.tensorfiles.nixvim.plugins.editor.render-markdown;
+  # _ = mkOverrideAtNixvimModuleLevel;
+
+in
+{
+  options.tensorfiles.nixvim.plugins.editor.render-markdown = {
+    enable = mkEnableOption ''
+      TODO
+    '';
+  };
+
+  config = mkIf cfg.enable (mkMerge [
+    # |----------------------------------------------------------------------| #
+    {
+      extraPlugins = with pkgs.vimPlugins; [
+        render-markdown
+      ];
+
+      extraConfigLua = ''
+        require('render-markdown').setup()
+      '';
+    }
+    # |----------------------------------------------------------------------| #
+  ]);
+
+  meta.maintainers = with localFlake.lib.maintainers; [ tsandrini ];
+}
diff --git a/flake-parts/modules/nixvim/plugins/editor/spectre.nix b/flake-parts/modules/nixvim/plugins/editor/spectre.nix
new file mode 100644
index 0000000..7ce6b95
--- /dev/null
+++ b/flake-parts/modules/nixvim/plugins/editor/spectre.nix
@@ -0,0 +1,72 @@
+# --- flake-parts/modules/nixvim/plugins/editor/spectre.nix
+#
+# Author:  tsandrini <tomas.sandrini@seznam.cz>
+# URL:     https://github.com/tsandrini/tensorfiles
+# License: MIT
+#
+# 888                                                .d888 d8b 888
+# 888                                               d88P"  Y8P 888
+# 888                                               888        888
+# 888888 .d88b.  88888b.  .d8888b   .d88b.  888d888 888888 888 888  .d88b.  .d8888b
+# 888   d8P  Y8b 888 "88b 88K      d88""88b 888P"   888    888 888 d8P  Y8b 88K
+# 888   88888888 888  888 "Y8888b. 888  888 888     888    888 888 88888888 "Y8888b.
+# Y88b. Y8b.     888  888      X88 Y88..88P 888     888    888 888 Y8b.          X88
+#  "Y888 "Y8888  888  888  88888P'  "Y88P"  888     888    888 888  "Y8888   88888P'
+{ localFlake }:
+{
+  config,
+  lib,
+  ...
+}:
+let
+  inherit (lib)
+    mkIf
+    mkMerge
+    mkEnableOption
+    ;
+  inherit (localFlake.lib.modules) mkOverrideAtNixvimModuleLevel;
+
+  cfg = config.tensorfiles.nixvim.plugins.editor.spectre;
+  _ = mkOverrideAtNixvimModuleLevel;
+in
+{
+  options.tensorfiles.nixvim.plugins.editor.spectre = {
+    enable = mkEnableOption ''
+      TODO
+    '';
+
+    withKeymaps =
+      mkEnableOption ''
+        Enable the related included keymaps.
+      ''
+      // {
+        default = true;
+      };
+  };
+
+  config = mkIf cfg.enable (mkMerge [
+    # |----------------------------------------------------------------------| #
+    {
+      plugins.spectre = {
+        enable = _ true;
+      };
+    }
+    # |----------------------------------------------------------------------| #
+    (mkIf cfg.withKeymaps {
+      keymaps = [
+        {
+          mode = "n";
+          key = "<leader>R";
+          action = "<cmd>Spectre<CR>";
+          options = {
+            silent = true;
+            desc = "Search & Replace";
+          };
+        }
+      ];
+    })
+    # |----------------------------------------------------------------------| #
+  ]);
+
+  meta.maintainers = with localFlake.lib.maintainers; [ tsandrini ];
+}
diff --git a/flake-parts/modules/nixvim/plugins/lsp/conform.nix b/flake-parts/modules/nixvim/plugins/lsp/conform.nix
index 5a9a1e2..fc43588 100644
--- a/flake-parts/modules/nixvim/plugins/lsp/conform.nix
+++ b/flake-parts/modules/nixvim/plugins/lsp/conform.nix
@@ -1,4 +1,4 @@
-# --- flake-parts/modules/nixvim/plugins/lsp.conform.nix
+# --- flake-parts/modules/nixvim/plugins/lsp/conform.nix
 #
 # Author:  tsandrini <tomas.sandrini@seznam.cz>
 # URL:     https://github.com/tsandrini/tensorfiles
@@ -21,8 +21,10 @@
 }:
 let
   inherit (lib) mkIf mkMerge mkEnableOption;
+  inherit (localFlake.lib.modules) mkOverrideAtNixvimModuleLevel;
 
   cfg = config.tensorfiles.nixvim.plugins.lsp.conform;
+  _ = mkOverrideAtNixvimModuleLevel;
 in
 {
   options.tensorfiles.nixvim.plugins.lsp.conform = {
@@ -43,7 +45,7 @@ in
     # |----------------------------------------------------------------------| #
     {
       plugins.conform-nvim = {
-        enable = true;
+        enable = _ true;
         settings = {
           # format_on_save = ''
           #   function(bufnr)
@@ -77,8 +79,8 @@ in
               return { lsp_fallback = true }
             end
           '';
-          notify_on_error = true;
-          notify_no_formatters = true;
+          notify_on_error = _ true;
+          notify_no_formatters = _ true;
           formatters_by_ft = {
             html = [
               [
@@ -135,40 +137,40 @@ in
 
           formatters = {
             black = {
-              command = "${lib.getExe pkgs.black}";
+              command = _ "${lib.getExe pkgs.black}";
             };
             isort = {
-              command = "${lib.getExe pkgs.isort}";
+              command = _ "${lib.getExe pkgs.isort}";
             };
             alejandra = {
-              command = "${lib.getExe pkgs.alejandra}";
+              command = _ "${lib.getExe pkgs.alejandra}";
             };
             nixfmt-rfc-style = {
-              command = "${lib.getExe pkgs.nixfmt-rfc-style}";
+              command = _ "${lib.getExe pkgs.nixfmt-rfc-style}";
             };
             jq = {
-              command = "${lib.getExe pkgs.jq}";
+              command = _ "${lib.getExe pkgs.jq}";
             };
             prettierd = {
-              command = "${lib.getExe pkgs.prettierd}";
+              command = _ "${lib.getExe pkgs.prettierd}";
             };
             stylua = {
-              command = "${lib.getExe pkgs.stylua}";
+              command = _ "${lib.getExe pkgs.stylua}";
             };
             shellcheck = {
-              command = "${lib.getExe pkgs.shellcheck}";
+              command = _ "${lib.getExe pkgs.shellcheck}";
             };
             shfmt = {
-              command = "${lib.getExe pkgs.shfmt}";
+              command = _ "${lib.getExe pkgs.shfmt}";
             };
             shellharden = {
-              command = "${lib.getExe pkgs.shellharden}";
+              command = _ "${lib.getExe pkgs.shellharden}";
             };
             bicep = {
-              command = "${lib.getExe pkgs.bicep}";
+              command = _ "${lib.getExe pkgs.bicep}";
             };
             #yamlfmt = {
-            #  command = "${lib.getExe pkgs.yamlfmt}";
+            #  command = _ "${lib.getExe pkgs.yamlfmt}";
             #};
           };
         };
diff --git a/flake-parts/modules/nixvim/plugins/lsp/lsp.nix b/flake-parts/modules/nixvim/plugins/lsp/lsp.nix
index 2c240f1..df86ca8 100644
--- a/flake-parts/modules/nixvim/plugins/lsp/lsp.nix
+++ b/flake-parts/modules/nixvim/plugins/lsp/lsp.nix
@@ -64,6 +64,7 @@ in
             ansiblels.enable = _ true;
             astro.enable = _ true;
             bashls.enable = _ true;
+            hls.enable = _ true;
             biome.enable = _ true;
             clangd.enable = _ true;
             cssls.enable = _ true;
diff --git a/flake-parts/modules/nixvim/plugins/lsp/otter.nix b/flake-parts/modules/nixvim/plugins/lsp/otter.nix
new file mode 100644
index 0000000..c5413ca
--- /dev/null
+++ b/flake-parts/modules/nixvim/plugins/lsp/otter.nix
@@ -0,0 +1,51 @@
+# --- flake-parts/modules/nixvim/plugins/lsp/otter.nix
+#
+# Author:  tsandrini <tomas.sandrini@seznam.cz>
+# URL:     https://github.com/tsandrini/tensorfiles
+# License: MIT
+#
+# 888                                                .d888 d8b 888
+# 888                                               d88P"  Y8P 888
+# 888                                               888        888
+# 888888 .d88b.  88888b.  .d8888b   .d88b.  888d888 888888 888 888  .d88b.  .d8888b
+# 888   d8P  Y8b 888 "88b 88K      d88""88b 888P"   888    888 888 d8P  Y8b 88K
+# 888   88888888 888  888 "Y8888b. 888  888 888     888    888 888 88888888 "Y8888b.
+# Y88b. Y8b.     888  888      X88 Y88..88P 888     888    888 888 Y8b.          X88
+#  "Y888 "Y8888  888  888  88888P'  "Y88P"  888     888    888 888  "Y8888   88888P'
+{ localFlake }:
+{
+  config,
+  lib,
+  ...
+}:
+let
+  inherit (lib) mkIf mkMerge mkEnableOption;
+  inherit (localFlake.lib.modules) mkOverrideAtNixvimModuleLevel;
+
+  cfg = config.tensorfiles.nixvim.plugins.lsp.otter;
+  _ = mkOverrideAtNixvimModuleLevel;
+in
+{
+  options.tensorfiles.nixvim.plugins.lsp.otter = {
+    enable = mkEnableOption ''
+      TODO
+    '';
+  };
+
+  config = mkIf cfg.enable (mkMerge [
+    # |----------------------------------------------------------------------| #
+    {
+      plugins.otter = {
+        enable = _ true;
+        settings = {
+          buffers = {
+            set_filetype = _ true;
+          };
+        };
+      };
+    }
+    # |----------------------------------------------------------------------| #
+  ]);
+
+  meta.maintainers = with localFlake.lib.maintainers; [ tsandrini ];
+}
diff --git a/flake-parts/modules/nixvim/profiles/base.nix b/flake-parts/modules/nixvim/profiles/base.nix
index c480e76..0e66ce7 100644
--- a/flake-parts/modules/nixvim/profiles/base.nix
+++ b/flake-parts/modules/nixvim/profiles/base.nix
@@ -44,7 +44,7 @@ in
       colorschemes.nightfox.enable = _ true;
 
       performance = {
-        combinePlugins.enable = _ true;
+        # combinePlugins.enable = _ true;
         byteCompileLua.enable = _ true;
       };
     }
diff --git a/flake-parts/modules/nixvim/profiles/ide.nix b/flake-parts/modules/nixvim/profiles/ide.nix
index d5b469f..c16b1bf 100644
--- a/flake-parts/modules/nixvim/profiles/ide.nix
+++ b/flake-parts/modules/nixvim/profiles/ide.nix
@@ -53,6 +53,7 @@ in
           lsp.conform.enable = _ true;
           lsp.fidget.enable = _ true;
           lsp.trouble.enable = _ true;
+          lsp.otter.enable = _ true;
         };
       };
 
diff --git a/flake-parts/modules/nixvim/profiles/minimal.nix b/flake-parts/modules/nixvim/profiles/minimal.nix
index 77081c9..42032db 100644
--- a/flake-parts/modules/nixvim/profiles/minimal.nix
+++ b/flake-parts/modules/nixvim/profiles/minimal.nix
@@ -53,6 +53,8 @@ in
           editor.treesitter.enable = _ true;
           editor.undotree.enable = _ true;
           editor.bufferline.enable = _ true;
+          editor.spectre.enable = _ true;
+          editor.render-markdown.enable = _ true;
         };
       };
 
@@ -60,17 +62,25 @@ in
 
       extraPlugins = with pkgs.vimPlugins; [
         # nightfox-nvim
+        # vscode-nvim
         catppuccin-nvim
         cyberdream-nvim
+        doom-one-nvim
+        dracula-nvim
+        everforest
         gruvbox-nvim
         kanagawa-nvim
+        melange-nvim
         modus-themes-nvim
         neovim-ayu
+        nord-nvim
+        one-nvim
         onedark-nvim
+        onenord-nvim
         oxocarbon-nvim
+        poimandres-nvim
         rose-pine
         tokyonight-nvim
-        # vscode-nvim
       ];
 
       plugins.mini = {