How to elegantly compose two tasks with SBT?

Question

I'd like to convert this bash expression:

$ sbt clean lint

into a nice build.sbt expression something like:

precommit := clean <> lint

so that I can run the following bash expression:

$ sbt precommit

For example, this is more-or-less how you'd do it with a Makefile:

lint:
    echo linting
    touch foo.txt

clean:
    echo cleaning
    rm -f foo.txt

precommit: clean lint

The Makefile can be used like:

$ make precommit
echo cleaning
cleaning
rm -f foo.txt
echo linting
linting
touch foo.txt

Any ideas?

Answer 1

Use sequential task

precommit := Def.sequential(clean, lint).value

while wearing a bespoke British suit, driving an Aston Martin on a country road for added elegance.

Answer 2

Use a command alias:

addCommandAlias("precommit", ";clean;lint")