catches-not-one-package-meta.yaml

---
xsls:
  - /org/eolang/parser/warnings/mandatory-package-meta.xsl
tests:
  - /program/errors[count(error[@severity='warning'])=1]
  - /program/errors[count(error[@severity='error'])=0]
eo: |
  +alias stding org.eolang.io.stdin
  +alias stdout org.eolang.io.stdout
  +home https://github.com/objectionary/eo
  +package test
  +package sandbox

  # This is the default 64+ symbols comment in front of abstract object.
  [] > main
    (stdout "Hello, world!").print