577772566b
The memoize function is not a pretty thing in terms of implementation, but it's exactly what we need to solve this UX problem and performance problem. Without this, every distinct `withSystem` call will cause a re-evaluation of the `perSystem` module, which is inefficient. Now, it's a one-time 13KB and length(system) attribute lookups: negligible compared to any instantiations and such. Nix doesn't offer memoization for functions yet, so this is the best we can do. |
||
|---|---|---|
| .. | ||
| memoize | ||