add bc calculator

nixos/home-manager/cli.nix

@@ -12,6 +12,7 @@
     android-tools
     appimage-run
     aria
+    bc
     bfg-repo-cleaner
     binutils
     bitwarden-cli

nixos/home-manager/programs/zsh.nix

@@ -1,8 +1,4 @@
-{
-  config,
-  pkgs,
-  ...
-}: {
+{ config, pkgs, ... }: {
   programs.zsh = {
     enable = true;
     history = {
@@ -18,7 +14,7 @@
 
     oh-my-zsh = {
       enable = true;
-      plugins = ["vi-mode" "git" "python" "history-substring-search" "tmux"];
+      plugins = [ "vi-mode" "git" "python" "history-substring-search" "tmux" ];
     };
 
     initExtra = ''
@@ -63,13 +59,14 @@
       tmate = "tmux detach-client -E 'tmate;tmux'";
       cat = "bat -p";
       rg = "rga";
+      bc = ''BC_ENV_ARGS=<(echo "scale=2") \bc'';
     };
   };
 
   programs.direnv = {
     enable = true;
     enableZshIntegration = true;
-    nix-direnv = {enable = true;};
+    nix-direnv = { enable = true; };
   };
 
   home.file.".config/starship.toml".text = ''