fix: terminfo error on macOS

Makefile

@@ -47,7 +47,8 @@ gc:
 ############################################################################
 
 darwin-set-proxy:
-	sudo python3 scripts/darwin_set_proxy.py
+	echo "skip setting proxy, use global proxy instead"
+	# sudo python3 scripts/darwin_set_proxy.py
 
 ha: darwin-set-proxy
 	nix build .#darwinConfigurations.harmonica.system

flake.nix

@@ -416,12 +416,13 @@
       # status: https://mirrors.ustc.edu.cn/status/
       # "https://mirrors.ustc.edu.cn/nix-channels/store"
 
-      # my own cache server
+      # fallback to official cache server if the above mirrors are not available
+      "https://cache.nixos.org"
+
+      # fallback to other non-official cache server
       "https://ryan4yin.cachix.org"
       "https://anyrun.cachix.org"
       "https://hyprland.cachix.org"
-      
-      "https://cache.nixos.org"
     ];
 
     # nix community's cache server

home/base/desktop/terminal/README.md

@@ -5,7 +5,7 @@
 3. alacritty: Standby terminal.
 
 
-## 'xterm-kitty': unknown terminal type when `ssh` into a remote host
+## 'xterm-kitty': unknown terminal type when `ssh` into a remote host or `sudo xxx`
 
 > https://sw.kovidgoyal.net/kitty/faq/#i-get-errors-about-the-terminal-being-unknown-or-opening-the-terminal-failing-or-functional-keys-like-arrow-keys-don-t-work
 
@@ -19,6 +19,22 @@ But when you `ssh` into a remote host, the remote host is very likely to not hav
 'xterm-kitty': unknown terminal type
 ```
 
+Or when you `sudo xxx`, `sudo` won't preserve the `TERM` variable, it will be reset to root's default `TERM` value, which is `xterm` or `xterm-256color` in most linux distributions, so you will get this error:
+
+```
+'xterm-256color': unknown terminal type
+```
+
+or 
+
+```
+Error opening terminal: xterm-kitty.
+```
+
+NixOS preserve the `TERMINFO` and `TERMINFO_DIRS` environment variables, for `root` and the `wheel` group: [nixpkgs/nixos/modules/config/terminfo.nix](https://github.com/NixOS/nixpkgs/blob/nixos-23.11/nixos/modules/config/terminfo.nix#L18)
+
+For nix-darwin, take a look at <https://github.com/LnL7/nix-darwin/wiki/Terminfo-issues>
+
 ### Solutions
 
 Simplest solution, it will automatically copy over the terminfo files and also magically enable shell integration on the remote machine: 

modules/darwin/apps.nix

@@ -1,4 +1,4 @@
-{pkgs, ...}: {
+{pkgs, config, ...}: {
   ##########################################################################
   #
   #  Install all apps and packages here.
@@ -23,7 +23,12 @@
     gnugrep  # replacee macos's grep
     gnutar # replacee macos's tar
   ];
-  environment.variables.EDITOR = "nvim";
+  environment.variables = {
+    # Fix https://github.com/LnL7/nix-darwin/wiki/Terminfo-issues
+    # TERMINFO_DIRS = map (path: path + "/share/terminfo") config.environment.profiles ++ [ "/usr/share/terminfo" ];
+
+    EDITOR = "nvim";
+  };
 
   # Create /etc/zshrc that loads the nix-darwin environment.
   # this is required if you want to use darwin's default shell - zsh

modules/nixos/user-group.nix

@@ -43,6 +43,9 @@
   };
   users.users.root.initialHashedPassword = "$7$CU..../....X6uvZYnFD.i1CqqFFNl4./$4vgqzIPyw5XBr0aCDFbY/UIRRJr7h5SMGoQ/ZvX3FP2";
 
+  # fix for `sudo xxx` in kitty/wezterm and other modern terminal emulators
+  security.sudo.keepTerminfo = true;
+
   # DO NOT promote the specified user to input password for `nix-store` and `nix-copy-closure`
   security.sudo.extraRules = [
     {