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Allow dynamic registration of builtin builders

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This commit is contained in:
Eelco Dolstra 2025-05-01 10:53:47 +02:00
parent 2676ae7ca6
commit 40bbad3be5
5 changed files with 32 additions and 15 deletions
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17
src/libstore/unix/build/derivation-builder.cc
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@ -1835,6 +1835,9 @@ void setupSeccomp()
}
RegisterBuiltinBuilder::BuiltinBuilders * RegisterBuiltinBuilder::builtinBuilders = nullptr;
void DerivationBuilderImpl::runChild()
{
/* Warning: in the child we should absolutely not make any SQLite
@ -2293,12 +2296,14 @@ void DerivationBuilderImpl::runChild()
if (drv.builder == "builtin:fetchurl")
builtinFetchurl(drv, outputs, netrcData, caFileData);
else if (drv.builder == "builtin:buildenv")
builtinBuildenv(drv, outputs);
else if (drv.builder == "builtin:unpack-channel")
builtinUnpackChannel(drv, outputs);
else
throw Error("unsupported builtin builder '%1%'", drv.builder.substr(8));
else {
std::string builtinName = drv.builder.substr(8);
assert(RegisterBuiltinBuilder::builtinBuilders);
if (auto builtin = get(*RegisterBuiltinBuilder::builtinBuilders, builtinName))
(*builtin)(drv, outputs);
else
throw Error("unsupported builtin builder '%1%'", builtinName);
}
_exit(0);
} catch (std::exception & e) {
writeFull(STDERR_FILENO, e.what() + std::string("\n"));