I used Go 1.8 for this, I have not tested it with earlier versions of Go, but I suspect it would be compatible with many earlier versions, as I am not using any recent stdlibs like context.
Probably the easiest way to install the program into the proper place, if you have Go already set up is to do a
go get github.com/slabgorb/wk
cd $GOPATH/src/github.com/slabgorb/wk
go install && wk -file ./input.wk
cd $GOPATH/src/github.com/slabgorb/wk
go test -v ./...
A workflow file is expected to be in the following format:
command:name # comments are denoted by '#' and anything on a line after a # is ignored.
argumentname:value
argumentname:value
argumentname:value
parallelcommand:name
argumentname:value
argumentname:value
parallelcommand:name
argumentname:value
argumentname:value