An obstacle I encountered using License Zero with a number of distribution systems was that the licenses weren’t well recognized. In one particular, the lack of an SPDX identifier was a hassle. For Rust’s crates.io, it’s a little extra hassle, because rather than simply identifying the license, you have to include the license file verbatim.
Go’s pkg.go.dev, though, has a strict list of acceptable licenses. When I tried to get Parity added, there was some pushback and then crickets. (It’s now possible to use BlueOak 1.0…: [https://pkg.go.dev/license-policy](https://Go’s license policy))
Is there an effort underway to get the IndieCC Standard Deal or Free License identified with the SPDX? That would go a long way to streamlining the process at distros.