Saves full dataset on disk, uses go-etherium code.
go get github.com/kkibria/ethdag
will install the package and dependency, go-etherium.
We need to copy the file sizes.go from the ethdag/ethash directory to the consensus/ethash directory of the go-etherium source tree. This will expose some unexported functions like cacheSize and datasetSize etc. that we need. Running make will copy the file, compile and install the executable in $GOPATH/bin directory.
make -f $GOPATH/src/github.com/kkibria/ethdag/Makefile