If a substitute closure is incomplete, build dependencies, then retry the substituter

Issue #77.
This commit is contained in:
Eelco Dolstra 2013-01-02 12:38:28 +01:00
parent 1b3a78a459
commit 299141ecbd
2 changed files with 30 additions and 8 deletions

View file

@ -93,7 +93,7 @@ typedef map<Path, WeakGoalPtr> WeakGoalMap;
class Goal : public boost::enable_shared_from_this<Goal>
{
public:
typedef enum {ecBusy, ecSuccess, ecFailed, ecNoSubstituters} ExitCode;
typedef enum {ecBusy, ecSuccess, ecFailed, ecNoSubstituters, ecIncompleteClosure} ExitCode;
protected:
@ -114,6 +114,10 @@ protected:
failed because there are no substituters. */
unsigned int nrNoSubstituters;
/* Number of substitution goals we are/were waiting for that
failed because othey had unsubstitutable references. */
unsigned int nrIncompleteClosure;
/* Name of this goal for debugging purposes. */
string name;
@ -122,7 +126,7 @@ protected:
Goal(Worker & worker) : worker(worker)
{
nrFailed = nrNoSubstituters = 0;
nrFailed = nrNoSubstituters = nrIncompleteClosure = 0;
exitCode = ecBusy;
}
@ -307,10 +311,12 @@ void Goal::waiteeDone(GoalPtr waitee, ExitCode result)
trace(format("waitee `%1%' done; %2% left") %
waitee->name % waitees.size());
if (result == ecFailed || result == ecNoSubstituters) ++nrFailed;
if (result == ecFailed || result == ecNoSubstituters || result == ecIncompleteClosure) ++nrFailed;
if (result == ecNoSubstituters) ++nrNoSubstituters;
if (result == ecIncompleteClosure) ++nrIncompleteClosure;
if (waitees.empty() || (result == ecFailed && !settings.keepGoing)) {
/* If we failed and keepGoing is not set, we remove all
@ -333,7 +339,7 @@ void Goal::amDone(ExitCode result)
{
trace("done");
assert(exitCode == ecBusy);
assert(result == ecSuccess || result == ecFailed || result == ecNoSubstituters);
assert(result == ecSuccess || result == ecFailed || result == ecNoSubstituters || result == ecIncompleteClosure);
exitCode = result;
foreach (WeakGoals::iterator, i, waiters) {
GoalPtr goal = i->lock();
@ -757,6 +763,10 @@ private:
/* Whether additional wanted outputs have been added. */
bool needRestart;
/* Whether to retry substituting the outputs after building the
inputs. */
bool retrySubstitution;
/* The derivation stored at drvPath. */
Derivation drv;
@ -906,6 +916,7 @@ DerivationGoal::DerivationGoal(const Path & drvPath, const StringSet & wantedOut
: Goal(worker)
, wantedOutputs(wantedOutputs)
, needRestart(false)
, retrySubstitution(false)
, fLogFile(0)
, bzLogFile(0)
, useChroot(false)
@ -1062,10 +1073,15 @@ void DerivationGoal::outputsSubstituted()
{
trace("all outputs substituted (maybe)");
if (nrFailed > 0 && nrFailed > nrNoSubstituters && !settings.tryFallback)
if (nrFailed > 0 && nrFailed > nrNoSubstituters + nrIncompleteClosure && !settings.tryFallback)
throw Error(format("some substitutes for the outputs of derivation `%1%' failed; try `--fallback'") % drvPath);
nrFailed = nrNoSubstituters = 0;
/* If the substitutes form an incomplete closure, then we should
build the dependencies of this derivation, but after that, we
can still use the substitutes for this derivation itself. */
if (nrIncompleteClosure > 0 && !retrySubstitution) retrySubstitution = true;
nrFailed = nrNoSubstituters = nrIncompleteClosure = 0;
if (needRestart) {
needRestart = false;
@ -1171,6 +1187,11 @@ void DerivationGoal::inputsRealised()
return;
}
if (retrySubstitution) {
haveDerivation();
return;
}
/* Gather information necessary for computing the closure and/or
running the build hook. */
@ -2639,7 +2660,7 @@ void SubstitutionGoal::referencesValid()
if (nrFailed > 0) {
debug(format("some references of path `%1%' could not be realised") % storePath);
amDone(nrNoSubstituters > 0 ? ecNoSubstituters : ecFailed);
amDone(nrNoSubstituters > 0 || nrIncompleteClosure > 0 ? ecIncompleteClosure : ecFailed);
return;
}

View file

@ -44,4 +44,5 @@ clearStore
rm $(grep -l "StorePath:.*dependencies-input-2" $cacheDir/*.narinfo)
nix-build --option binary-caches "file://$cacheDir" dependencies.nix -o $TEST_ROOT/result
nix-build --option binary-caches "file://$cacheDir" dependencies.nix -o $TEST_ROOT/result 2>&1 | tee $TEST_ROOT/log
grep -q "Downloading" $TEST_ROOT/log