Fis Trivial <ybbs.da...@hotmail.com> skribis: > So, we can build packages in a generic way, and then provide optional > dependencies. > In this case, we treat SSE as default dependency and AVX2 as an optional > dependency, let users specify whether they want it or not. > AVX2 need not to be actual packages, it's just an abstraction. > > It's just a thought that we can abstract architecture as part of the > dependency graph.
We do that in the form of the “system type”—“x86_64-linux”, etc. That captures what’s otherwise not captured in the graph: the architecture and the kernel. Someone proposed having, say, “x86_64avx2-linux”, which is similar in spirit to what you’re proposing, I think. However that’d be inconvenient because every single package in the graph would have to be rebuilt compared to “x86_64-linux”. Also, I don’t see how to make that an _optional_ dependency. Thanks, Ludo’.
