make flags:
building meta-build
sed "s@__prefix__@/nix/store/ndxvs2xifzdm2qfy4l5flz2q3qg9160c-meta-build-env@g/...-meta-build-env@g;\� s@__datadir__@/nix/store/ndxvs2xifzdm2qfy4l5flz2q3qg9160c-meta-build-env/share@g/...-meta-build-env/share@g;\� s@__PACKAGE__@meta-build-env@g" < meta-build.src > meta-build && chmod +x meta-build