It probably was Rebol that one. Rebol core is free and open source, the GUI distribution is instead released in binary form, as freeware (and exists only for rebol 2.7, we know about rebol3 only for Core).
BUT! There's an open source version of Rebol3 with GUI, from Atronix. I still don't know how the hell it works, like, what does it pull for dependencies.
that wasn't there when red started, and i don't know if it is a drop in replacement for the version red needs. if it isn't then they probably just didn't bother porting since they want to be selfhosting in the future anyways.
I wouldn't try building red from source with neither the official rebol 3 nor this Atronix release (nor Oldes fork, nor Ren-C), on their site they always built with rebol 2.7.
I thought red aimed for self-hosting, but as far as I can delve in their sites, I infer that they are rolling the rebol way and you "should just download the binary distribution". Meh!
well, that explains why they are not using this FOSS licensed rebol. it's the wrong version. they are aiming for self hosting, it's just taking them a while to get it done.
take a look at their roadmap:
*v0.7 : Full I/O with async support.
*v1.0b : (beta) completed self-hosted Red with 64-bit support.
For reaching the 1.0-beta milestone, we target 12 months of intensive work, so that will bring us to Q3 2023.
so that was written in june 2022 before 0.7.
there is no announcement for 0.7, but then they changed the versioning so i can't tell if the goals for that have been reached. but it's pretty clear that self-hosting is the next big target.
