export GUM_FILTER_HEIGHT := "15"

build hostname=`just _a_host`:
  nom build .#nixosConfigurations."{{hostname}}".config.system.build.toplevel --accept-flake-config --show-trace

@_a_host:
  hostnames="$(nix eval .#nixosConfigurations --apply builtins.attrNames --json 2>/dev/null | jq '.[]' -r)"; \
  if test "$(grep <<<"$hostnames" "^$(hostname)$" | wc -l)" -eq 1; then hostnames="$(hostname; grep <<<"$hostnames" -v "^$(hostname)$")"; fi; \
  gum <<<"$hostnames" filter --placeholder "Pick a host..."