Apply iceberg color scheme on Linux console to avoid unreadable ANSI Blue

home-manager/bash.nix

@@ -127,6 +127,10 @@
         ${lib.getBin pkgs.coreutils}/bin/stty stop undef
 
         source "${config.xdg.configHome}/posix_shells/shared_functions.sh"
+
+        if [ 'linux' = "$TERM" ]; then
+          apply_iceberg
+        fi
       ''
       + builtins.readFile ./initExtra.bash;
 

home-manager/common.nix

@@ -152,6 +152,38 @@
     gch() {
       fc -nrl 1 | ${lib.getExe homemade-pkgs.fzf-bind-posix-shell-history-to-git-commit-message}
     }
+
+    # See the reason in GH-660
+    # Original scheme: https://gist.github.com/cocopon/1d481941907d12db7a0df2f8806cfd41
+    apply_iceberg() {
+      # Blue. Mandatory to be changed from ANSI
+      echo -en "\e]P484a0c6"
+      echo -en "\e]PC91acd1"
+
+      # Black
+      echo -en "\e]P01e2132"
+      echo -en "\e]P86b7089"
+
+      # Red
+      echo -en "\e]P1e27878"
+      echo -en "\e]P9e98989"
+
+      # Green
+      echo -en "\e]P2b4be82"
+      echo -en "\e]PAc0ca8e"
+
+      # Yellow
+      echo -en "\e]P3e2a478"
+      echo -en "\e]PBe9b189"
+
+      # Magenta
+      echo -en "\e]P5a093c7"
+      echo -en "\e]PDada0d3"
+
+      # White
+      echo -en "\e]P7c6c8d1"
+      echo -en "\e]PFd2d4de"
+    }
   '';
 
   xdg.configFile."wezterm" = {

home-manager/zsh.nix

@@ -205,6 +205,10 @@
 
       source_sh "${config.xdg.configHome}/posix_shells/shared_functions.sh"
 
+      if [ 'linux' = "$TERM" ]; then
+        apply_iceberg
+      fi
+
       # https://superuser.com/a/902508/120469
       # https://github.com/zsh-users/zsh-autosuggestions/issues/259
       zshaddhistory() { whence ''${''${(z)1}[1]} >| /dev/null || return 1 }

nixos/configuration.nix

@@ -368,6 +368,42 @@ in
     };
   };
 
+  # Apply better fonts for non X consoles
+  # https://github.com/NixOS/nixpkgs/issues/219239
+  boot.initrd.kernelModules = [ "amdgpu" ];
+  # https://wiki.archlinux.org/title/Linux_console
+  console = {
+    earlySetup = true;
+    # The font should have PSF formats. Do not specify TTF and OTF
+    # You can list current glyphs with `showconsolefont`
+    font = "ter-u24n";
+
+    packages = with pkgs; [
+      # https://github.com/NixOS/nixpkgs/blob/nixos-24.05/pkgs/data/fonts/terminus-font/default.nix#L41-L43
+      terminus_font
+    ];
+    keyMap = "us";
+  };
+
+  # Better console appearance even if no X, but do not use for now with the unstable behaviors
+  # https://github.com/NixOS/nixpkgs/blob/nixos-24.05/nixos/modules/services/ttys/kmscon.nix
+  services.kmscon = {
+    enable = false;
+    hwRender = false;
+    fonts = with pkgs; [
+      {
+        name = "IBM Plex Mono";
+        package = ibm-plex;
+      }
+      {
+        name = "Noto Color Emoji";
+        package = noto-fonts-color-emoji;
+      }
+    ];
+    extraConfig = "font-size=24";
+    extraOptions = "--term xterm-256color";
+  };
+
   # https://nixos.wiki/wiki/Podman
   virtualisation = {
     containers.enable = true;