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Is this preceding work to the tour de force that is the Chez Scheme incremental like 40+ Scheme compiler. I mean, Cisco bought it, probably to hide it from us all. It must be worth something.

https://www.youtube.com/watch?v=Os7FE3J-U5Q

http://lambda-the-ultimate.org/node/1589

https://github.com/akeep/nanopass-framework

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Not true. Chez Scheme has been released as free open source software: https://github.com/cisco/ChezScheme

As someone pointed out, yeah, open-sourced after bought. There used to be variations. One, compiled, Chez Scheme, and the latter interpreted with none of the benefits of the compiler design but still fast and well desiged in relation to other Schemes, Petite Chez Scheme. The latter was freeware, the former, neither free/open nor freeware.

It was never clear why Cisco bought it. Rumors persist ...

It was the other way around, Chez Scheme was released as open source, Apache license, after Cisco bought it.

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