shell.nix

{ config, lib, pkgs, ... }:
let
  functions = builtins.readFile ./functions.sh;
  aliases = rec {
    ls = "${pkgs.coreutils}/bin/ls --color=auto -h";
    la = "${ls} -a";
    ll = "${ls} -la";
    lt = "${ls} -lat";
  } // lib.optionalAttrs pkgs.stdenvNoCC.isDarwin rec {
    # darwin specific aliases
    ibrew = "arch -x86_64 brew";
    abrew = "arch -arm64 brew";
  };
in
{
  programs.zsh =
    let
      mkZshPlugin = { pkg, file ? "${pkg.pname}.plugin.zsh" }: rec {
        name = pkg.pname;
        src = pkg.src;
        inherit file;
      };
    in
    {
      enable = true;
      autocd = true;
      dotDir = ".config/zsh";
      localVariables = {
        LANG = "en_US.UTF-8";
        GPG_TTY = "/dev/ttys000";
        DEFAULT_USER = "${config.home.username}";
        CLICOLOR = 1;
        LS_COLORS = "ExFxBxDxCxegedabagacad";
        TERM = "xterm-256color";
      };
      shellAliases = aliases;
      initExtraBeforeCompInit = ''
        fpath+=~/.zfunc
      '';
      initExtra = ''
        ${functions}
        ${lib.optionalString pkgs.stdenvNoCC.isDarwin ''
          if [[ -d /opt/homebrew ]]; then
            eval "$(/opt/homebrew/bin/brew shellenv)"
          fi
        ''}
        unset RPS1
      '';
      profileExtra = ''
        ${lib.optionalString pkgs.stdenvNoCC.isLinux "[[ -e /etc/profile ]] && source /etc/profile"}
      '';
      plugins = with pkgs; [
        (mkZshPlugin { pkg = zsh-autopair; })
        (mkZshPlugin { pkg = zsh-completions; })
        (mkZshPlugin { pkg = zsh-autosuggestions; })
        (mkZshPlugin {
          pkg = zsh-fast-syntax-highlighting;
          file = "fast-syntax-highlighting.plugin.zsh";
        })
        (mkZshPlugin { pkg = zsh-history-substring-search; })
      ];
      oh-my-zsh = {
        enable = true;
        plugins = [ "git" "sudo" ];
      };
    };

  programs.bash = {
    enable = true;
    shellAliases = aliases;
    initExtra = ''
      ${functions}
    '';
  };
}