local.mk:5: warning: overriding recipe for target 'outputs/dev/include/nix/nix_api_expr.h'
local.mk:5: warning: ignoring old recipe for target 'outputs/dev/include/nix/nix_api_expr.h'
local.mk:5: warning: overriding recipe for target 'outputs/dev/include/nix/nix_api_external.h'
local.mk:5: warning: ignoring old recipe for target 'outputs/dev/include/nix/nix_api_external.h'
local.mk:5: warning: overriding recipe for target 'outputs/dev/include/nix/nix_api_value.h'
local.mk:5: warning: ignoring old recipe for target 'outputs/dev/include/nix/nix_api_value.h'
local.mk:5: warning: overriding recipe for target 'outputs/dev/include/nix/nix_api_store.h'
local.mk:5: warning: ignoring old recipe for target 'outputs/dev/include/nix/nix_api_store.h'
local.mk:5: warning: overriding recipe for target 'outputs/dev/include/nix/nix_api_util.h'
local.mk:5: warning: ignoring old recipe for target 'outputs/dev/include/nix/nix_api_util.h'
This also reworks the Mercurial fetcher (which was still using the
old cache interface) to have two distinct cache mappings:
* A ref-to-rev mapping, which is store-independent.
* A rev-to-store-path mapping.
Code operating on store objects (including creating them) should, in
general, use `ContentAddressMethod` rather than `FileIngestionMethod`.
See also dfc876531f which included some
similar refactors.
See https://github.com/NixOS/nix/pull/8699#discussion_r1554312181
Casting a function pointer to `void*` is undefined behavior in the C
spec, since there are platforms with different sizes for these two kinds
of pointers. A safe alternative might be `void (*callback)()`
* add intermediate variables and clarifying comments
Co-authored-by: Alexander Groleau <alex@proof.construction>
Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
https://github.com/NixOS/nix/pull/10456 fixed the addition of symlink
store paths to the sandbox, but also made it so that the hardcoded
sandbox paths (like `/etc/hosts`) were now bind-mounted without
following the possible symlinks. This made these files unreadable if
there were symlinks (because the sandbox would now contain a symlink to
an unreachable file rather than the underlying file).
In particular, this broke FOD derivations on NixOS as `/etc/hosts` is a
symlink there.
Fix that by canonicalizing all these hardcoded sandbox paths before
adding them to the sandbox.
