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Allow Worker instances to be locally configured with substituters

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This will be useful for unit tests.
This commit is contained in:
John Ericson 2025-12-15 00:53:45 -05:00
parent a6eb2e91b7
commit 3cfac9b079
4 changed files with 13 additions and 5 deletions
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4
src/libstore/build/drv-output-substitution-goal.cc
View file

@ -3,8 +3,6 @@
#include "nix/store/build/worker.hh"
#include "nix/store/build/substitution-goal.hh"
#include "nix/util/callback.hh"
#include "nix/store/store-open.hh"
#include "nix/store/globals.hh"
namespace nix {
@ -25,7 +23,7 @@ Goal::Co DrvOutputSubstitutionGoal::init()
co_return amDone(ecSuccess);
}
auto subs = settings.useSubstitutes ? getDefaultSubstituters() : std::list<ref<Store>>();
auto subs = worker.getSubstituters();
bool substituterFailed = false;

3
src/libstore/build/substitution-goal.cc
View file

@ -1,5 +1,4 @@
#include "nix/store/build/worker.hh"
#include "nix/store/store-open.hh"
#include "nix/store/build/substitution-goal.hh"
#include "nix/store/nar-info.hh"
#include "nix/util/finally.hh"
@ -60,7 +59,7 @@ Goal::Co PathSubstitutionGoal::init()
throw Error(
"cannot substitute path '%s' - no write access to the Nix store", worker.store.printStorePath(storePath));
auto subs = settings.useSubstitutes ? getDefaultSubstituters() : std::list<ref<Store>>();
auto subs = worker.getSubstituters();
bool substituterFailed = false;
std::optional<Error> lastStoresException = std::nullopt;

2
src/libstore/build/worker.cc
View file

@ -1,5 +1,6 @@
#include "nix/store/local-store.hh"
#include "nix/store/machines.hh"
#include "nix/store/store-open.hh"
#include "nix/store/build/worker.hh"
#include "nix/store/build/substitution-goal.hh"
#include "nix/store/build/drv-output-substitution-goal.hh"
@ -21,6 +22,7 @@ Worker::Worker(Store & store, Store & evalStore)
, actSubstitutions(*logger, actCopyPaths)
, store(store)
, evalStore(evalStore)
, getSubstituters{[] { return settings.useSubstitutes ? getDefaultSubstituters() : std::list<ref<Store>>{}; }}
{
nrLocalBuilds = 0;
nrSubstitutions = 0;

9
src/libstore/include/nix/store/build/worker.hh
View file

@ -8,6 +8,7 @@
#include "nix/store/realisation.hh"
#include "nix/util/muxable-pipe.hh"
#include <functional>
#include <future>
#include <thread>
@ -171,6 +172,14 @@ public:
Store & store;
Store & evalStore;
/**
* Function to get the substituters to use for path substitution.
*
* Defaults to `getDefaultSubstituters`. This allows tests to
* inject custom substituters.
*/
std::function<std::list<ref<Store>>()> getSubstituters;
#ifndef _WIN32 // TODO Enable building on Windows
std::unique_ptr<HookInstance> hook;
#endif