language interpreters in Makefiles

Makefile

.ONESHELL:
.SILENT:

main: \
	python \
	ruby \
	R \
	bash \
	docker

docker: .SHELLFLAGS = run --rm --entrypoint /bin/bash ubuntu -c
docker: SHELL := docker
docker:
	echo "hello, $$(uname -a)!"

python: SHELL := python3
python:
	greeting = "hello"
	print(f"{greeting}, python!")

ruby: .SHELLFLAGS := -e
ruby: SHELL := ruby
ruby:
	greeting = "labas"
	puts "#{greeting}, ruby!"

R: .SHELLFLAGS := -e
R: SHELL := Rscript
R:
	greeting = "bonjour"
	message(paste0(greeting, ", R!"))

bash: .SHELLFLAGS := -euo pipefail -c
bash: SHELL := bash
bash:
	export greeting="¡hola"
	echo "$${greeting}, bash!"