docs: add reference to :cannot_represent license

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Rylan Polster 2020-10-22 10:24:12 -04:00
parent 24523f8225
commit e459056d27

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@ -18,6 +18,12 @@ The public domain can be indicated using a symbol:
license :public_domain
```
If the license for a formula cannot be represented using an SPDX expression:
```ruby
license :cannot_represent
```
## Complex SPDX License Expressions
Some formulae have multiple licenses that need to be combined in different ways. In these cases, a more complex license expression can be used. These expressions are based on the [SPDX License Expression Guidelines](https://spdx.github.io/spdx-spec/appendix-IV-SPDX-license-expressions/).