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Yocto Beginner - Build Errors When Layers / Recipes Added

Question asked by Aaron Sarginson on May 3, 2017
Latest reply on Feb 15, 2019 by mahesh reddy
I have been trying to get a build up and running for the past couple of days following the latest official quick-start guide with no success (Debian 8 —> Debian 7 —> Ubuntu LTS…)
I want to have openssh, ntp, iptables, dnsmasq and hostapd added to the build. The meta-amd layer was added in case of there being anything useful for a GX-412TC Crowned Eagle CPU. It doesn’t seem to have any impact at the moment.
My bblayers.conf customisations:
  /home/aaron/poky/meta-amd/common \
  /home/aaron/poky/meta-openembedded/meta-networking \
  /home/aaron/poky/meta-openembedded/meta-python \
  /home/aaron/poky/meta-openembedded/meta-oe \
Each of these was added to the poky directory using git clone “link”. The last two are dependencies for meta-networking.
I have added the following to my local.conf:
CORE_IMAGE_EXTRA_INSTALL += "openssh ntp iptables dnsmasq hostapd”
On running bitbake core-image-minimal I get the below error.
Is there something wrong with how I am doing this?
ERRORExpansionError during parsing /home/aaron/poky/meta-openembedded/meta-python/recipes-extended/python-pyephem/
Traceback (most recent call last):
  File "/home/aaron/poky/bitbake/lib/bb/", line 386, in DataSmart.expandWithRefs(s=' ${PYPI_SRC_URI}', varname='SRC_URI'):
    >                s = __expand_var_regexp__.sub(varparse.var_sub, s)
  File "/home/aaron/poky/bitbake/lib/bb/", line 111, in VariableParse.var_sub(match=<_sre.SRE_Match object; span=(1, 16), match='${PYPI_SRC_URI}'>):
    >                var = self.d.getVarFlag(key, "_content", True)
  File "/home/aaron/poky/bitbake/lib/bb/", line 737, in DataSmart.getVarFlag(var='PYPI_SRC_URI', flag='_content', expand=True, noweakdefault=False, parsing=False):
                     cachename = var + "[" + flag + "]"
    >            value = self.expand(value, cachename)
  File "/home/aaron/poky/bitbake/lib/bb/", line 410, in DataSmart.expand(s='${@pypi_src_uri(d)}', varname='PYPI_SRC_URI'):
         def expand(self, s, varname = None):
    >        return self.expandWithRefs(s, varname).value
  File "/home/aaron/poky/bitbake/lib/bb/", line 400, in DataSmart.expandWithRefs(s='${@pypi_src_uri(d)}', varname='PYPI_SRC_URI'):
                 except Exception as exc:
    >                raise ExpansionError(varname, s, exc) from exc
bb.data_smart.ExpansionError: Failure expanding variable PYPI_SRC_URI, expression was ${@pypi_src_uri(d)} which triggered exception TypeError: getVar() missing 1 required positional argument: 'expand'
Summary: There was 1 ERROR message shown, returning a non-zero exit code.