David Craven <da...@craven.ch> skribis: >> Also, why is sha256 used via FFI via an external library? It's not exactly >> difficult to implement in Guile :P > > I'm not sure we want to write our own crypto primitives... And it's > not quite as trivial, I don't know or care what a Newton-Raphson > algorithm is ;) > http://stackoverflow.com/questions/24093199/a-pure-scheme-implementation-r5rs-of-sha256
I suspect it would be slow with Guile 2.0, and (guix hash) is used in performance-critical locations. That said, if there’s a need for it on the build side where performance does not matter much, it makes sense to add a pure-Scheme implementation. I think Weinhölt’s Industria library has one. Alternately, we could make it easier to import (guix hash). All we need is to create a custom (guix config) module where ‘%libgcrypt’ is found to the right thing, or something like that. HTH! Ludo’.
