Nix Package Manager development - Public Room Timeline

	Nix Package Manager development	876 Members
	For people hacking on Nix: https://github.com/NixOS/nix Nix maintainers can be reached here.	184 Servers

Sender	Message	Time
18 Oct 2025
dramforever	but the point is no, it won't always be present locally	15:28:55
raboof	right, you can, but I wondered if/when that happens in practice	15:30:58
dramforever	`--substitute-on-destination` definitely happens in practice	15:32:11
fzakaria	anyone want to pair/hack tonight?	20:11:25
fzakaria	Question I was confused by Jeremy Fleischman (jfly) : When calculating store-paths, Nix does "Hashing modulo fixed-output derivations" -- this makes sense since you want the store-path to be stable for multiple drvs for the FOD. His question: Can we replace all the inputDrvs with their store-path and also achieve the same thing? (replace via the same massaging that we do for FODs)	20:54:21
fzakaria	Download image.png	21:04:07
fzakaria	The part we are confused about: B.drv may have many different A.drv ; That's OK because eventually A.drv is replaced with A.outPath... BUT C depends on B.drv ... wouldn't that path have changed since the contents of the drv can have N A.drv paths	21:04:58
Jeremy Fleischman (jfly)	My question is stronger than "can we?". I'm saying "mustn't we?"	21:42:26