Given following log snippets, their explanation, and nothing else, explain what failure, if any, occurred during build of this package.

  Snippets are in a format of [X] : [Y], where [X] is a log snippet, and [Y] is the explanation.

  Snippets are delimited with '================'.

  Drawing on information from all snippets, provide a concise explanation of the issue and recommend a solution.

  Explanation of the issue, and recommended solution, should take a handful of sentences.

  Snippets:

  [
pyproject_save_files: invalid option -- ']: [Option 'l' isn't valid.]
=============
[
error: /builddir/build/originals/python-hatchling.spec: line 49: Unknown option l in pyproject_save_files]: [Spec file contains error on line 49 in pyproject_save_files()]

Issue: Spec file or other build file contains errors.
Resolution: Inspect 'pyproject_save_files' and invalid option 'l'.