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primeCache(): Barf if builds are needed but not allowed

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Fixes #2753.
This commit is contained in:
Eelco Dolstra 2019-04-01 21:09:49 +02:00
parent 2bc6304793
commit 41ba5135e0
1 changed files with 6 additions and 0 deletions
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6
src/libstore/build.cc
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@ -12,6 +12,7 @@
#include "json.hh" #include "json.hh"
#include "nar-info.hh" #include "nar-info.hh"
#include "parsed-derivations.hh" #include "parsed-derivations.hh"
#include "machines.hh"
#include <algorithm> #include <algorithm>
#include <iostream> #include <iostream>
@ -4411,6 +4412,11 @@ static void primeCache(Store & store, const PathSet & paths)
PathSet willBuild, willSubstitute, unknown; PathSet willBuild, willSubstitute, unknown;
unsigned long long downloadSize, narSize; unsigned long long downloadSize, narSize;
store.queryMissing(paths, willBuild, willSubstitute, unknown, downloadSize, narSize); store.queryMissing(paths, willBuild, willSubstitute, unknown, downloadSize, narSize);
if (!willBuild.empty() && 0 == settings.maxBuildJobs && getMachines().empty())
throw Error(
"%d derivations need to be built, but neither local builds ('--max-jobs') "
"nor remote builds ('--builders') are enabled", willBuild.size());
} }