Build error: Key fortran is not allowed in package file

[barracuda156]

--->  Building twopnt
xinstall: mkdir /opt/local/var/macports/build/_opt_PPCRosettaPorts_fortran_twopnt/twopnt/work/bin
Executing:  cd "/opt/local/var/macports/build/_opt_PPCRosettaPorts_fortran_twopnt/twopnt/work/twopnt-4ce477215f84a88d879f0ca3937cab9bedfb7762" && /opt/local/bin/fpm install --verbose --prefix="/opt/local/var/macports/build/_opt_PPCRosettaPorts_fortran_twopnt/twopnt/work/opt/local" --profile="release" 
<ERROR>Key fortran is not allowed in package file
STOP 1

[barracuda156]

Ah, this requires fpm 0.8.0: fortran-lang/fftpack@2a50ce4

[barracuda156]

P. S. Also there are no tests to run.