From 766f7084188d8c0dd0595bbbfc50fbc4f9d67a50 Mon Sep 17 00:00:00 2001 From: Eelco Dolstra Date: Fri, 27 Aug 2010 13:18:13 +0000 Subject: * Experimental feature: allow a derivation to tell the build hook that it requires a certain feature on the build machine, e.g. requiredSystemFeatures = [ "kvm" ]; We need this in Hydra to make sure that builds that require KVM support are forwarded to machines that have KVM support. Probably this should also be enforced for local builds. --- src/libstore/build.cc | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'src/libstore/build.cc') diff --git a/src/libstore/build.cc b/src/libstore/build.cc index f2781776c6ef..f9c9a0a1eae5 100644 --- a/src/libstore/build.cc +++ b/src/libstore/build.cc @@ -1327,8 +1327,16 @@ HookReply DerivationGoal::tryBuildHook() if (!worker.hook) worker.hook = boost::shared_ptr(new HookInstance); - writeLine(worker.hook->toHook.writeSide, (format("%1% %2% %3%") % - (worker.getNrLocalBuilds() < maxBuildJobs ? "1" : "0") % drv.platform % drvPath).str()); + /* Tell the hook about system features (beyond the system type) + required from the build machine. (The hook could parse the + drv file itself, but this is easier.) */ + Strings features = tokenizeString(drv.env["requiredSystemFeatures"]); + foreach (Strings::iterator, i, features) checkStoreName(*i); /* !!! abuse */ + + /* Send the request to the hook. */ + writeLine(worker.hook->toHook.writeSide, (format("%1% %2% %3% %4%") + % (worker.getNrLocalBuilds() < maxBuildJobs ? "1" : "0") + % drv.platform % drvPath % concatStringsSep(",", features)).str()); /* Read the first line of input, which should be a word indicating whether the hook wishes to perform the build. */ -- cgit 1.4.1