Version Constraints DSL

When adding a dependency on a package, you must specify a constraint on the version. Since Buckaroo can work directly on Git, this is a little different to other package managers:

• v1, 1, 1.0.0, 1.0.0 take only semantic version 1.0.0
• >= 1.2 take only semantic versions >= 1.2.0
• ^1.2 works as in NPM
• ~1.2 works as in NPM
• branch=master take only commits on branch master
• tag=some-tag take only commits at tag some-tag
• revision=dc16c91af2519b6129a33bd6e1675ebf73739103 take only revision dc16c91...
• any(branch=master tag=abc 1.2.3) take versions that satisfy at least one of:
  • branch=master
  • tag=abc
  • 1.2.3
• all(branch=master branch=develop) take versions that satisfy all of:
  • branch=master
  • branch=develop
• !tag=abc take any version that does not satisfy tag=abc

As you might expect, these building blocks can be combined to write complex expressions:

• all(!branch=master any(tag=abc tag=def 1.0.0))
• all(>=1.0.0 !any(1.0.0 1.3.4 revision=dc16c91af2519b6129a33bd6e1675ebf73739103))