If there are more than one recipe in the scan path for YCL, these are the errors that indicate such a conflict. Maybe print "hints" or other help full information.

      ['PV', 'PYPI_PACKAGE', 'PYPI_PACKAGE_EXT', 'PYPI_SRC_URI', 'SRCREV', 'SRC_URI', 'SRC_URI[md5sum]', 'SRC_URI[sha256sum]', 'base_do_fetch', 'pypi_src_uri']
      to:
      ['PV', 'PYPI_PACKAGE', 'PYPI_PACKAGE_EXT', 'PYPI_SRC_URI', 'SRCREV', 'SRC_URI', 'SRC_URI[sha256sum]', 'base_do_fetch', 'pypi_src_uri']
      basehash changed from 9867ef77fd0cbc3da764ff92166aff95d0c336f4ad5b5b76fb32efdcbbe6ba9a to e29c3670e5c128243bc8784b65abbb095dc988914148e06038ee530f179a19b9
      List of dependencies for variable SRC_URI changed from '{'PYPI_SRC_URI', 'SRC_URI[md5sum]', 'SRC_URI[sha256sum]'}' to '{'PYPI_SRC_URI', 'SRC_URI[sha256sum]'}'
      changed items: {'SRC_URI[md5sum]'}
      Dependency on Variable SRC_URI[md5sum] was removed
      Variable SRC_URI[sha256sum] value changed from '81e4f5522d38c136fd3f1be4e35ffe4fd1f4c2091db3c021d95f8b9d5978b9eb' to 'bc707e3604784496b6665a9e5b2a69c36cc9fb032af4864b29051531b24c8593' <<<--- (two pkgs)
      Variable PYPI_PACKAGE value changed from 'scapy-python3' to 'scapy'
      Variable PV value changed from '0.26' to '2.4.5' <<<<----- (two pkgs)

or

    "{+git://github.com/secdev/scapy.git+}  [-${PYPI_SRC_URI}-] {+          file://run-ptest+}"
      Variable SRCREV value changed from 'INVALID' to '32cd7eb0f620d9adf171c48d55514e8326a538d7'
      Dependency on checksum of file run-ptest was added


(two pkgs, one pypi based, one git clone)