SSH keychain initialize on WSL before instant prompt

home/dot_zshrc.tmpl

@@ -1,3 +1,8 @@
+# If WSL, add SSH key on startup (once per WSL start)
+{{- if .wsl }}
+eval `keychain --quiet --eval --agents ssh ~/.ssh/id_rsa`
+{{ end }}
+
 # Enable Powerlevel10k instant prompt. Should stay close to the top of ~/.zshrc.
 # Initialization code that may require console input (password prompts, [y/n] confirmations, etc.) must go above this block; everything else may go below.
 if [[ -r "${XDG_CACHE_HOME:-$HOME/.cache}/p10k-instant-prompt-${(%):-%n}.zsh" ]]; then