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CA derivations that depend on other CA derivations

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Co-authored-by: Théophane Hufschmitt <regnat@users.noreply.github.com>
This commit is contained in:
John Ericson 2020-08-22 20:44:47 +00:00
parent e0b0e18905
commit 8eb73a8724
6 changed files with 189 additions and 28 deletions
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53
src/libstore/derivations.cc
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@ -672,4 +672,57 @@ std::string downstreamPlaceholder(const Store & store, const StorePath & drvPath
return "/" + hashString(htSHA256, clearText).to_string(Base32, false);
}
// N.B. Outputs are left unchanged
static void rewriteDerivation(Store & store, BasicDerivation & drv, const StringMap & rewrites) {
debug("Rewriting the derivation");
for (auto &rewrite: rewrites) {
debug("rewriting %s as %s", rewrite.first, rewrite.second);
}
drv.builder = rewriteStrings(drv.builder, rewrites);
for (auto & arg: drv.args) {
arg = rewriteStrings(arg, rewrites);
}
StringPairs newEnv;
for (auto & envVar: drv.env) {
auto envName = rewriteStrings(envVar.first, rewrites);
auto envValue = rewriteStrings(envVar.second, rewrites);
newEnv.emplace(envName, envValue);
}
drv.env = newEnv;
}
Sync<DrvPathResolutions> drvPathResolutions;
BasicDerivation Derivation::resolve(Store & store) {
BasicDerivation resolved { *this };
// Input paths that we'll want to rewrite in the derivation
StringMap inputRewrites;
for (auto & input : inputDrvs) {
auto inputDrvOutputs = store.queryPartialDerivationOutputMap(input.first);
StringSet newOutputNames;
for (auto & outputName : input.second) {
auto actualPathOpt = inputDrvOutputs.at(outputName);
if (!actualPathOpt)
throw Error("input drv '%s' wasn't yet built", store.printStorePath(input.first));
auto actualPath = *actualPathOpt;
inputRewrites.emplace(
downstreamPlaceholder(store, input.first, outputName),
store.printStorePath(actualPath));
resolved.inputSrcs.insert(std::move(actualPath));
}
}
rewriteDerivation(store, resolved, inputRewrites);
return resolved;
}
}