If you have expensive-to-compile stuff that hydra doesn't build, just freeze (or upgrade quarterly for instance) the version of nixpkgs that you use for that particular stuff. (The rest of your system can happily keep updating at a brisker pace).
On Tue, Aug 30, 2016 at 1:19 AM, stewart mackenzie <[email protected]> wrote: > Okay, then I'm absolutely boggled as to why each and every time I > update I have recompile rustBeta.rustc then rustUnstable.rustc. > > I've literally been using nix-build ... -I > nixpkgs=https://github.com/NixOS/nixpkgs-channels/archive/ > 125ffff089b6bd360c82cf986d8cc9b17fc2e8ac.tar.gz > for more than a month. > That is the last working revision of Rust. > > I really should get sleep. I'm at my wits end. >
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