Makefile + shard features example

0.README.md

Makefile to build a shard.yml file by merging others using yq:

• make shards => base
• make shards web=1 => with kemal
• make shards database=1 => with mysql
• make shards web=1 database=1 => with both

base.yaml

name: test
version: 0.1.0

authors:
  - Evangelos Paterakis <evan@geopjr.dev>

targets:
  test:
    main: src/test.cr

crystal: 1.8.0

license: MIT

features.database.yaml

dependencies:
  mysql:
    github: crystal-lang/crystal-mysql

features.web.yaml

dependencies:
  kemal:
    github: kemalcr/kemal

Makefile

web ?= 0
database ?= 0

shards:
	cp base.yaml shard.yml
ifeq ($(web), 1)
	yq -i '. *= load("features.web.yaml")' shard.yml
endif
ifeq ($(database), 1)
	yq -i '. *= load("features.database.yaml")' shard.yml
endif