added more configs to dotfiles

local-configs/zsh/default.nix

@@ -0,0 +1,61 @@
+{ config, pkgs, ... }:
+
+{
+  programs.zsh = {
+    enable = true;
+
+    dotDir = ".config/zsh";
+
+    history = {
+      extended = true;
+    };
+
+    localVariables = {
+      # Enable Oh My Zsh history timestamp output.
+      # See: https://github.com/ohmyzsh/ohmyzsh/wiki/Settings#hist_stamps
+      HIST_STAMPS = "yyyy-mm-dd";
+    };
+
+    # Make use of Oh My Zsh
+    # See the projects sites:
+    # https://ohmyz.sh/
+    # https://github.com/ohmyzsh/ohmyzsh/
+    # See the projects documentation:
+    # https://github.com/ohmyzsh/ohmyzsh/wiki
+    oh-my-zsh = {
+      enable = true;
+      theme = "agnoster";
+      custom = "/home/forestcat/.config/oh-my-zsh-custom";
+      plugins = [
+        "history-substring-search"
+        "timer"
+        "pass"
+      ];
+      extraConfig = ''
+        # Only show the command execution timer, if the command ran for at least 15 seconds.
+        TIMER_THRESHOLD=15
+      '';
+    };
+
+    initExtra = ''
+      nx() {
+        nix shell nixpkgs/nixos-23.11#$@
+      }
+
+      # history-substring-search configuration
+      # See: https://github.com/ohmyzsh/ohmyzsh/tree/master/plugins/history-substring-search#configuration
+      # Ensure unique search results in history-substring-search.
+      # Needs to be set here instead of in oh-my-zsh.extraConfig to work apparently.
+      HISTORY_SUBSTRING_SEARCH_ENSURE_UNIQUE=1
+    '';
+
+    shellAliases = {
+      # Others.
+      miau = "echo miau";
+      ll = "ls -l";
+      cheetah = "curl -d 'Lena: Done ✓' https://ntfy.forestcat.org/cheetah";
+      rebuild = "sudo nixos-rebuild switch --flake ~/nix-configs/ --show-trace";
+    };
+  };
+}
+