Makefile to bootstrap and build a Purescript project

Makefile

npm_bin:=$(shell npm bin)
psc=$(npm_bin)/psc
bower=$(npm_bin)/bower

outdir=target

all: $(outdir)/js/HelloWorld.js

$(outdir)/js/HelloWorld.js: src/HelloWorld.purs
$(outdir)/js/HelloWorld.js: pscflags=--main=$*
	

$(outdir)/js/%.js: psclibsrc=$(shell find bower_components/*/src '*.purs')
$(outdir)/js/%.js: $(psc) $(outdir)/bower.installed $(psclibsrc)
	@mkdir -p $(dir $@)
	$(psc) $(filter %.purs,$^) --output=$@ --module=$* $(pscflags)

$(psc):
	npm install purescript@0.6.10

$(bower):
	npm install bower@1.4.1

$(outdir)/bower.installed: $(bower) bower.json
	$(bower) install
	@mkdir -p $(dir $@)
	touch $@

clean:
	rm -rf $(outdir)/js
	
clean-libs:
	rm -rf $(outdir) bower_components
	
clean-everything: clean-libs
	rm -rf node_modules

.PHONY: all clean clean-libs clean-everything