diff --git a/flake.nix b/flake.nix
index a996ff0..fd4664c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,14 +2,14 @@
   description = "NixOS system configuration";
 
   nixConfig = {
-    substituters = [
-      "https://cache.nixos.org/"
-      "https://nix-community.cachix.org"
-    ];
-    trusted-public-keys = [
-      "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
-      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
-    ];
+    # substituters = [
+    # "https://cache.nixos.org/"
+    # "https://nix-community.cachix.org"
+    # ];
+    # trusted-public-keys = [
+    # "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
+    # "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+    # ];
   };
 
   inputs = {
diff --git a/home/programs/polybar/config.ini b/home/programs/polybar/config.ini
index 7cb03c7..41e5060 100644
--- a/home/programs/polybar/config.ini
+++ b/home/programs/polybar/config.ini
@@ -29,13 +29,14 @@ module-margin-right = 0
 tray-position = right
 tray-detached = false
 
-background = ${colors.background}
-foreground = ${colors.foreground}
-
 font-0 = "NotoSans-Regular:size=11;2.5" 
 font-1 = "JetBrainsMono Nerd Font:style=Regular:size=11;2.5"
 font-2 = "Noto Sans Symbols:size=13;1"
 
+background = ${colors.background}
+foreground = ${colors.foreground}
+
+
 ; noto -> text font
 ; jetbrains -> icons
 
diff --git a/home/programs/polybar/default.nix b/home/programs/polybar/default.nix
index 8bfe10f..d1dcec7 100644
--- a/home/programs/polybar/default.nix
+++ b/home/programs/polybar/default.nix
@@ -37,6 +37,39 @@
   # ${ip} route | ${grep} default | ${awk} '{print $5}' > $out
   # '';
 
+  res = builtins.getEnv "RES";
+
+  hd = ''
+    [bar/mybar]
+    height = 20
+    font-0 = "NotoSans-Regular:size=11;2.5"
+    font-1 = "JetBrainsMono Nerd Font:style=Regular:size=11;2.5"
+    font-2 = "Noto Sans Symbols:size=11;1"
+  '';
+
+  fhd = ''
+    [bar/mybar]
+    height = 20
+    font-0 = "NotoSans-Regular:size=11;2.5"
+    font-1 = "JetBrainsMono Nerd Font:style=Regular:size=11;2.5"
+    font-2 = "Noto Sans Symbols:size=11;1"
+  '';
+
+  qhd = ''
+    [bar/mybar]
+    height = 25
+    font-0 = "NotoSans-Regular:size=11;2.5"
+    font-1 = "JetBrainsMono Nerd Font:style=Regular:size=11;2.5"
+    font-2 = "Noto Sans Symbols:size=13;1"
+  '';
+
+  mon =
+    if res == "1366x768"
+    then hd
+    else if res == "2560x1440"
+    then qhd
+    else fhd;
+
   internets = ''
     [module/network]
     type = internal/network
@@ -61,7 +94,7 @@ in {
     enable = true;
     package = mypolybar;
     config = ./config.ini;
-    extraConfig = bctl + internets;
+    extraConfig = bctl + internets + mon;
     # my savior: https://www.reddit.com/r/NixOS/comments/v8ikwq/polybar_doesnt_start_at_launch/
     script = ''
       # echo "none"
diff --git a/home/scripts/rebuild.sh b/home/scripts/rebuild.sh
index b6e11cd..c1c5e45 100644
--- a/home/scripts/rebuild.sh
+++ b/home/scripts/rebuild.sh
@@ -14,7 +14,7 @@ if git --git-dir /home/synchronous/nix-cfg/.git diff-index --quiet HEAD; then
     exit 0
 fi
 
-/run/current-system/sw/bin/nix flake check /home/synchronous/nix-cfg/ || { echo "Flake check failed. Exiting."; exit 1; }
+# /run/current-system/sw/bin/nix flake check /home/synchronous/nix-cfg/ || { echo "Flake check failed. Exiting."; exit 1; }
 
 # Autoformat your nix files
 alejandra . &>/dev/null \
diff --git a/home/test.tex b/home/test.tex
deleted file mode 100644
index e69de29..0000000
diff --git a/hosts/thonkpad/configuration.nix b/hosts/thonkpad/configuration.nix
index 3f067ae..995ff1c 100644
--- a/hosts/thonkpad/configuration.nix
+++ b/hosts/thonkpad/configuration.nix
@@ -25,6 +25,10 @@ in {
     users.synchronous = import ../../home/home.nix;
   };
 
+  environment.variables = {
+    RES = "1366x768";
+  };
+
   # Bootloader.
   # boot.loader.grub.enable = true;
   # boot.loader.grub.device = "/dev/sda";