Hi, On 08/04/14 09:54, Marc Weber wrote:
> I'll give you another useful tip: If you want to "save bandwidth" then > switch to binary distro. While nixos has had the ability to create > "binary differences" I'm unsure wether its activated/available at the > moment. It was disabled in the past. Maybe somebody else can comment on > this. Binary patch generation is no longer done because the binary cache substituter doesn't support binary patches. Only the old manifest-based substituter did. Also, the number of packages in Nixpkgs has grown a lot, so generating patches for all of them would be pretty expensive. > Also "waste of space/bandwidth" always happens because: > > - nixos always ships with header files for all libraries > (this could be fixed because nix supports multiple outputs) Yeah, multiple outputs will fix this eventually (reducing system closure size is my main goal for 14.10). See https://github.com/NixOS/nixpkgs/commit/dbe432e6f4502fc7b4e290d1b3356083bd93b099 for an example of the savings you can get. Deduplication of stored files is possible by running "nix-store --optimise" or by setting the nix.conf option "auto-optimise-store = true". -- Eelco Dolstra | LogicBlox, Inc. | http://nixos.org/~eelco/ _______________________________________________ nix-dev mailing list [email protected] http://lists.science.uu.nl/mailman/listinfo/nix-dev
