Just for anyone else who comes across this, the fix i made in cirros's Makefile (which can be applied anywhere else) was simply to add:
unexport SED # causes random issues (LP: #920620)
Alternatively, you can just remember to run:
unset SED
or
env -u SED your-build-command-here
Just for anyone else who comes across this, the fix i made in cirros's Makefile (which can be applied anywhere else) was simply to add:
unexport SED # causes random issues (LP: #920620)
Alternatively, you can just remember to run: command- here
unset SED
or
env -u SED your-build-