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2022-03-17Clean up `DerivationOutput`, and headersJohn Ericson
1. `DerivationOutput` now as the `std::variant` as a base class. And the variants are given hierarchical names under `DerivationOutput`. In 8e0d0689be797f9e42f9b43b06f50c1af7f20b4a @matthewbauer and I didn't know a better idiom, and so we made it a field. But this sort of "newtype" is anoying for literals downstream. Since then we leaned the base class, inherit the constructors trick, e.g. used in `DerivedPath`. Switching to use that makes this more ergonomic, and consistent. 2. `store-api.hh` and `derivations.hh` are now independent. In bcde5456cc3295061a0726881c3e441444dd6680 I swapped the dependency, but I now know it is better to just keep on using incomplete types as much as possible for faster compilation and good separation of concerns.
2022-03-17Fix `nix build --dry-run` with CA derivationsThéophane Hufschmitt
Don’t try and assume that we know the output paths when we’ve just built with `--dry-run`. Instead make `--dry-run` follow a different code path that won’t assume the knowledge of the output paths at all. Fix #6275
2022-02-25Remove std::string alias (for real this time)Eelco Dolstra
Also use std::string_view in a few more places.
2021-10-26Make experimental-features a proper typeregnat
Rather than having them plain strings scattered through the whole codebase, create an enum containing all the known experimental features. This means that - Nix can now `warn` when an unkwown experimental feature is passed (making it much nicer to spot typos and spot deprecated features) - It’s now easy to remove a feature altogether (once the feature isn’t experimental anymore or is dropped) by just removing the field for the enum and letting the compiler point us to all the now invalid usages of it.
2021-09-30`std::visit` by referenceJohn Ericson
I had started the trend of doing `std::visit` by value (because a type error once mislead me into thinking that was the only form that existed). While the optomizer in principle should be able to deal with extra coppying or extra indirection once the lambdas inlined, sticking with by reference is the conventional default. I hope this might even improve performance.
2021-05-17Merge pull request #4818 from NixOS/ca/cli-use-builtpathsEelco Dolstra
Enforce the use of properly built paths in libcmd
2021-05-17Enfore the use of properly built paths in libcmdregnat
Replace `DerivedPathWithHints` by a new `BuiltPath` type that serves as a proof that the corresponding path has been built.
2021-05-12Fix tokenize output names in drvMatthew Bauer
This should fix the issue described in https://discourse.nixos.org/t/derivation-does-not-have-wanted-outputs-dev-out/12905. Specifically, we get an error of error: derivation '/nix/store/_.drv' does not have wanted outputs 'dev,out' when a path like /nix/store/_.drv!dev,out is sent to the daemon.
2021-05-12DerivedPathWithHints -> BuiltPathregnat
Just a renaming for now
2021-04-05buildable.{cc,hh} -> derived-path.{cc,hh}John Ericson