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Check requiredSystemFeatures for local builds

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For example, this prevents a "kvm" build on machines that don't have
KVM.

Fixes #2012.
This commit is contained in:
Eelco Dolstra 2018-09-28 15:57:27 +02:00
parent 7ae7a38c9a
commit 1e7b8deea7
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GPG key ID: 8170B4726D7198DE
8 changed files with 79 additions and 16 deletions
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15
src/libstore/globals.cc
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@ -86,6 +86,21 @@ unsigned int Settings::getDefaultCores()
return std::max(1U, std::thread::hardware_concurrency());
}
StringSet Settings::getDefaultSystemFeatures()
{
/* For backwards compatibility, accept some "features" that are
used in Nixpkgs to route builds to certain machines but don't
actually require anything special on the machines. */
StringSet features{"nixos-test", "benchmark", "big-parallel"};
#if __linux__
if (access("/dev/kvm", R_OK | W_OK) == 0)
features.insert("kvm");
#endif
return features;
}
const string nixVersion = PACKAGE_VERSION;
template<> void BaseSetting<SandboxMode>::set(const std::string & str)