Maximilian Bosch
6905291daf
I think that it's not very helpful to get "cached failures" in a wrong `flake.nix`. This can be very confusing when debugging a Nix expression. See for instance NixOS/nixpkgs#118115. In fact, the eval cache allows a forced reevaluation which is used for e.g. `nix eval`. This change makes sure that this is the case for `nix build` as well. So rather than λ ma27 [~/Projects/exp] → ../nix/outputs/out/bin/nix build -L --rebuild --experimental-features 'nix-command flakes' error: cached failure of attribute 'defaultPackage.x86_64-linux' the evaluation of already-evaluated (and failed) attributes looks like this now: λ ma27 [~/Projects/exp] → ../nix/outputs/out/bin/nix build -L --rebuild --experimental-features 'nix-command flakes' error: attribute 'hell' missing at /nix/store/mrnvi9ss8zn5wj6gpn4bcd68vbh42mfh-source/flake.nix:6:35: 5| 6| packages.x86_64-linux.hello = nixpkgs.legacyPackages.x86_64-linux.hell; | ^ 7| (use '--show-trace' to show detailed location information) |
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| .. | ||
| build-remote | ||
| cpptoml | ||
| libcmd | ||
| libexpr | ||
| libfetchers | ||
| libmain | ||
| libstore | ||
| libutil | ||
| nix | ||
| nix-build | ||
| nix-channel | ||
| nix-collect-garbage | ||
| nix-copy-closure | ||
| nix-env | ||
| nix-instantiate | ||
| nix-store | ||
| nlohmann | ||
| resolve-system-dependencies | ||