diff --git a/flake.lock b/flake.lock
index fdbf8a5..bcfc87f 100644
--- a/flake.lock
+++ b/flake.lock
@@ -71,6 +71,29 @@
         "type": "github"
       }
     },
+    "codeium-nvim": {
+      "inputs": {
+        "flake-utils": [
+          "flake-utils"
+        ],
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1696904458,
+        "narHash": "sha256-3L4I98OkSY0ayGu+p/sO1g1mC6jp2olv1kQVDVNARvE=",
+        "owner": "jcdickinson",
+        "repo": "codeium.nvim",
+        "rev": "d9b026071378c18b7536be298365a2e3885cd64f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "jcdickinson",
+        "repo": "codeium.nvim",
+        "type": "github"
+      }
+    },
     "darwin": {
       "inputs": {
         "nixpkgs": [
@@ -434,11 +457,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1696737557,
-        "narHash": "sha256-YD/pjDjj/BNmisEvRdM/vspkCU3xyyeGVAUWhvVSi5Y=",
+        "lastModified": 1696776279,
+        "narHash": "sha256-PRJiq+DSq5o/Dzd7ZYWTA8larDg4btkTICPzfjjalig=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "3c1d8758ac3f55ab96dcaf4d271c39da4b6e836d",
+        "rev": "6dfbdc977e059f30376e23f70f67d9726d5c91b8",
         "type": "github"
       },
       "original": {
@@ -563,11 +586,11 @@
     },
     "master": {
       "locked": {
-        "lastModified": 1696923230,
-        "narHash": "sha256-Evn8vdETCSxQH6txfwYIN7N69RKSfZLkN7dSqfnRYRw=",
+        "lastModified": 1696931607,
+        "narHash": "sha256-gVV772uE7Th5iyRTh+KNA4YOBzaL9DjmNz+qep2f/Ww=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "906535b6191830a247e004f53d74359a60883ba4",
+        "rev": "c74fd1b820c24ebe1065af1cabbe2b6a4c86641d",
         "type": "github"
       },
       "original": {
@@ -931,6 +954,22 @@
         "type": "github"
       }
     },
+    "none-ls-nvim": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696658105,
+        "narHash": "sha256-4+B2F4ZweWTqXlhSs0jiBaKSv52G4X7p37KHfYl6sPo=",
+        "owner": "nvimtools",
+        "repo": "none-ls.nvim",
+        "rev": "ae339f45590cc421a68de885fc5a3261cc247362",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nvimtools",
+        "repo": "none-ls.nvim",
+        "type": "github"
+      }
+    },
     "nur": {
       "locked": {
         "lastModified": 1696923989,
@@ -1040,6 +1079,7 @@
         "agenix": "agenix",
         "arkenfox-userjs": "arkenfox-userjs",
         "asus-touchpad-numpad-driver": "asus-touchpad-numpad-driver",
+        "codeium-nvim": "codeium-nvim",
         "devshell": "devshell",
         "disko": "disko",
         "flake-parts": "flake-parts",
@@ -1056,6 +1096,7 @@
         "nix-lazy-nvim": "nix-lazy-nvim",
         "nix-super": "nix-super",
         "nixpkgs": "nixpkgs_8",
+        "none-ls-nvim": "none-ls-nvim",
         "nur": "nur",
         "nvim-lspconfig": "nvim-lspconfig",
         "nvim-puppeteer": "nvim-puppeteer",
diff --git a/flake.nix b/flake.nix
index 8c553e0..1d8f87f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -30,6 +30,11 @@
     # Neovim
     actions-preview-nvim.flake = false;
     actions-preview-nvim.url = "github:aznhe21/actions-preview.nvim";
+    codeium-nvim = {
+      inputs.nixpkgs.follows = "nixpkgs";
+      inputs.flake-utils.follows = "flake-utils";
+      url = "github:jcdickinson/codeium.nvim";
+    };
     hmts-nvim.flake = false;
     hmts-nvim.url = "github:calops/hmts.nvim";
     neovim-nightly-overlay.url = "github:nix-community/neovim-nightly-overlay";
@@ -46,6 +51,8 @@
     telekasten-nvim.url = "github:renerocksai/telekasten.nvim";
     telescope-nvim.flake = false;
     telescope-nvim.url = "github:nvim-telescope/telescope.nvim";
+    none-ls-nvim.flake = false;
+    none-ls-nvim.url = "github:nvimtools/none-ls.nvim";
 
     # Hyprland
     hypr-contrib.url = "github:hyprwm/contrib";
diff --git a/modules/profiles/base.nix b/modules/profiles/base.nix
index 8904931..7bfc800 100644
--- a/modules/profiles/base.nix
+++ b/modules/profiles/base.nix
@@ -123,6 +123,8 @@ in
           "|" = "split-window -h";
           "C-l" = "send-keys C-l";
           "R" = "source-file $XDG_CONFIG_HOME/tmux/tmux.conf \\; display-message 'Reloaded tmux.conf'";
+          "f" = "new-window ts";
+          "a" = "new-window ta";
         };
         copy-mode-vi = {
           "v" = "send -X begin-selection";
diff --git a/modules/programs/nvim/default.nix b/modules/programs/nvim/default.nix
index 96e7683..a7fdfcd 100644
--- a/modules/programs/nvim/default.nix
+++ b/modules/programs/nvim/default.nix
@@ -30,12 +30,17 @@ in
           [
             alejandra
             black
+            checkmake
             deadnix
+            dotenv-linter
+            fish
             isort
             jq
             nixd
             nixpkgs-fmt
             nodePackages.bash-language-server
+            nodePackages.jsonlint
+            ruff-lsp
             rustfmt
             shellcheck
             shfmt
@@ -46,6 +51,7 @@ in
             typst
             typst-lsp
             yamlfmt
+            yamllint
           ];
         extraLuaConfig = readFile ./options.lua;
         lazy.enable = true;
diff --git a/modules/programs/nvim/plugins/coding.nix b/modules/programs/nvim/plugins/coding.nix
index fc4d22a..d0c0856 100644
--- a/modules/programs/nvim/plugins/coding.nix
+++ b/modules/programs/nvim/plugins/coding.nix
@@ -86,26 +86,13 @@ with builtins;
         { plugin = cmp-cmdline; }
         { plugin = cmp-nvim-lsp; }
         { plugin = cmp_luasnip; }
+        {
+          plugin = codeium-nvim;
+          opts = { };
+        }
         { plugin = friendly-snippets; }
         { plugin = lspkind-nvim; }
         { plugin = luasnip; }
-        {
-          plugin = copilot-cmp;
-          opts = { };
-          dependencies = [
-            {
-              plugin = copilot-lua;
-              opts = {
-                suggestion = { enabled = false; };
-                panel = { enabled = false; };
-              };
-              conf = /* lua */ ''
-                require("copilot").setup(opts)
-                vim.cmd("Copilot disable")
-              '';
-            }
-          ];
-        }
       ];
     }
     {
@@ -117,7 +104,6 @@ with builtins;
       event = [ "BufRead" "BufNewFile" ];
       conf = readFile ./lua/nvim-lspconfig.lua;
       dependencies = [
-        { plugin = lsp_signature-nvim; }
         {
           plugin = null-ls-nvim;
           conf = readFile ./lua/null-ls-nvim.lua;
diff --git a/modules/programs/nvim/plugins/lua/null-ls-nvim.lua b/modules/programs/nvim/plugins/lua/null-ls-nvim.lua
index 6701630..32a1f7e 100644
--- a/modules/programs/nvim/plugins/lua/null-ls-nvim.lua
+++ b/modules/programs/nvim/plugins/lua/null-ls-nvim.lua
@@ -8,9 +8,15 @@ null_ls.setup({
     -- Completion
     null_ls.builtins.completion.spell,
     -- Diagnostics
+    null_ls.builtins.diagnostics.checkmake,
     null_ls.builtins.diagnostics.deadnix,
+    null_ls.builtins.diagnostics.dotenv_linter,
+    null_ls.builtins.diagnostics.fish,
+    null_ls.builtins.diagnostics.jsonlint,
     null_ls.builtins.diagnostics.shellcheck,
     null_ls.builtins.diagnostics.statix,
+    null_ls.builtins.diagnostics.trail_space,
+    null_ls.builtins.diagnostics.yamllint,
   },
 })
 
diff --git a/modules/programs/nvim/plugins/lua/nvim-cmp.lua b/modules/programs/nvim/plugins/lua/nvim-cmp.lua
index c48297b..975d84a 100644
--- a/modules/programs/nvim/plugins/lua/nvim-cmp.lua
+++ b/modules/programs/nvim/plugins/lua/nvim-cmp.lua
@@ -17,7 +17,7 @@ cmp.setup({
       maxwidth = 50, -- prevent the popup from showing more than provided characters
       ellipsis_char = "...", -- when popup menu exceed maxwidth, the truncated part would show ellipsis_char instead
       symbol_map = {
-        Copilot = "",
+        Codeium = "",
       },
     }),
   },
@@ -56,8 +56,8 @@ cmp.setup({
     { name = "async_path", priority = 1 },
     { name = "buffer", priority = 1 },
     { name = "luasnip", priority = 2 },
-    { name = "copilot", group_index = 3 },
-    { name = "nvim_lsp", priority = 4 },
+    { name = "codeium", priority = 3 },
+    { name = "nvim_lsp", priority = 3 },
   },
 })
 
diff --git a/modules/programs/tmux/default.nix b/modules/programs/tmux/default.nix
index 6469f96..67a4d5f 100644
--- a/modules/programs/tmux/default.nix
+++ b/modules/programs/tmux/default.nix
@@ -19,14 +19,14 @@ let
 
   tmux-sessionizer = pkgs.writeFishApplication {
     name = "ts";
-    runtimeInputs = with pkgs; [ tmux findutils coreutils procps fd fzf1 tmux-switch ];
+    runtimeInputs = with pkgs; [ tmux findutils coreutils procps fd tmux-switch gawk ];
     text = readFile ./tmux-sessionizer/script.fish;
     completions = readFile ./tmux-sessionizer/completions.fish;
   };
 
   tmux-attach = pkgs.writeFishApplication {
     name = "ta";
-    runtimeInputs = with pkgs; [ tmux fzf1 tmux-switch ];
+    runtimeInputs = with pkgs; [ tmux tmux-switch ];
     text = readFile ./tmux-attach/script.fish;
     completions = readFile ./tmux-attach/completions.fish;
   };
@@ -97,7 +97,7 @@ in
             if ! fish_is_root_user && test "$TERM_PROGRAM" != 'vscode' && ${insideVariableMissing}
                 if test -z $tmux_autostarted
                     set -x tmux_autostarted true
-                    ts
+                    tmux new -A -s home
                 end
             end
           '';
diff --git a/modules/programs/tmux/tmux-attach/script.fish b/modules/programs/tmux/tmux-attach/script.fish
index 442dec2..6d1ab79 100644
--- a/modules/programs/tmux/tmux-attach/script.fish
+++ b/modules/programs/tmux/tmux-attach/script.fish
@@ -1,4 +1,4 @@
-set selected (tmux list-sessions -F '#{session_name}' 2>/dev/null | fzf1 $argv)
+set selected (tmux list-sessions -F '#{session_name}' 2>/dev/null | fzf --query "$argv")
 if not test -n "$selected"
   exit 1
 end
diff --git a/modules/programs/tmux/tmux-sessionizer/script.fish b/modules/programs/tmux/tmux-sessionizer/script.fish
old mode 100644
new mode 100755
index d0ca484..a5e957b
--- a/modules/programs/tmux/tmux-sessionizer/script.fish
+++ b/modules/programs/tmux/tmux-sessionizer/script.fish
@@ -1,4 +1,11 @@
-set selected (fd -HIg '.git' ~/ --min-depth 1 --max-depth 5 --type d --prune --exec dirname {} | fzf1 $argv)
+#!/usr/bin/env fish
+set pipe (mktemp --dry-run)
+mkfifo $pipe
+
+fd -HIg '.git' ~/ --min-depth 1 --max-depth 5 --type d --prune --exec-batch dirname {} | tee $pipe >/dev/null &
+fd . ~/ --min-depth 1 --max-depth 3 --type d --exec-batch realpath {} | tee $pipe >/dev/null &
+set selected (cat $pipe | awk '!seen[$0]++' | fzf --query "$argv")
+rm -f "$pipe"
 
 set selected_name (basename $selected 2>/dev/null | string replace "." "_")
 
diff --git a/overlays/packages.nix b/overlays/packages.nix
index df04332..98b5fb4 100644
--- a/overlays/packages.nix
+++ b/overlays/packages.nix
@@ -12,20 +12,6 @@ final: prev:
   timers = inputs.timers.packages.${prev.system}.default;
   hyprland = inputs.hyprland.packages.${prev.system}.default;
 
-  fzf1 = final.writeShellApplication {
-    name = "fzf1";
-    runtimeInputs = with final; [ coreutils fzf fd ];
-    text = ''
-      #!/usr/bin/env bash
-      selected=$(fzf --query="$*" -1 < /dev/stdin)
-
-      if [[ -z $selected ]]; then
-        exit 0
-      fi
-
-      echo "$selected"
-    '';
-  };
   xorg = prev.xorg // {
     lndir = prev.xorg.lndir.overrideAttrs (_: {
       meta.mainProgram = "lndir";
diff --git a/overlays/vimPlugins.nix b/overlays/vimPlugins.nix
index b7b6b8e..401de8b 100644
--- a/overlays/vimPlugins.nix
+++ b/overlays/vimPlugins.nix
@@ -4,6 +4,8 @@ _: prev:
 with lib.my;
 {
   vimPlugins = prev.vimPlugins // {
+    inherit (inputs.codeium-nvim.packages.${prev.system}.vimPlugins) codeium-nvim;
+
     smartcolumn-nvim = prev.vimUtils.buildVimPlugin {
       pname = "smartcolumn-nvim";
       version = mkVersionInput inputs.smartcolumn-nvim;
@@ -49,5 +51,10 @@ with lib.my;
       version = mkVersionInput inputs.nvim-puppeteer;
       src = inputs.nvim-puppeteer;
     };
+
+    null-ls-nvim = prev.vimPlugins.null-ls-nvim.overrideAttrs (a: {
+      version = mkVersionInput inputs.none-ls-nvim;
+      src = inputs.none-ls-nvim;
+    });
   };
 }