Exposed for Hydra. We could make it fancier but with (a) new store
settings (b) switch to `ssh-ng://` both in the works, it doesn't seem
worth it.
(cherry picked from commit 94a7c34b2f)
It is unused in Nix currently, but will be used in Hydra. This reflects
what Hydra does in https://github.com/NixOS/hydra/pull/1387.
We may probably to use it more widely for better SSH store performance,
but this needs to be subject to more testing before we do that.
(cherry picked from commit 0d25cc6541)
Logging to another Logger was kind of nonsensical - it was really just
an easy way to get it to write its output to stderr, but that only
works if the underlying logger writes to stderr.
This change is needed to make it easy to log JSON output somewhere
else (like a file or socket).
It is unused in Nix currently, but will be used in Hydra. This reflects
what Hydra does in https://github.com/NixOS/hydra/pull/1387.
We may probably to use it more widely for better SSH store performance,
but this needs to be subject to more testing before we do that.
This is a first step towards PR #10760, and the issues it addresses.
See the Doxygen for details.
Thanks to these changes, we are able to drastically restrict how the
rest of the code-base uses `ParseDerivation`.
Co-Authored-By: HaeNoe <git@haenoe.party>
It's best we teach users that the "foo" derivation is less than pure in the sense that it cannot be built just on any system, in particular that builders cannot be selected arbitrarily but based on their system-features. The `"recursive-nix"` system-feature is automatically defined by `--extra-experimental-features recursive-nix`
Otherwise we may accidentally update a lock when we shouldn't.
Fixes#12445.
(cherry picked from commit 5c552b62fc)
# Conflicts:
# src/libflake/flake/flake.cc
I do not believe there is any problem with computing
`hashDerivationModulo` the normal way with impure derivations.
Conversely, the way this used to work is very suspicious because two
almost-equal derivations that only differ in depending on different
impure derivations could have the same drv hash modulo. That is very
suspicious because there is no reason to think those two different
impure derivations will end up producing the same content-addressed
data!
Co-authored-by: Alain Zscheile <zseri.devel@ytrizja.de>
