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#include "installables.hh"
#include "store-api.hh"
#include "eval-inline.hh"
#include "eval-cache.hh"
#include "names.hh"
namespace nix {
App Installable::toApp(EvalState & state)
{
auto [cursor, attrPath] = getCursor(state);
auto type = cursor->getAttr("type")->getString();
auto checkProgram = [&](const Path & program)
{
if (!state.store->isInStore(program))
throw Error("app program '%s' is not in the Nix store", program);
};
if (type == "app") {
auto [program, context] = cursor->getAttr("program")->getStringWithContext();
checkProgram(program);
std::vector<StorePathWithOutputs> context2;
for (auto & [path, name] : context)
context2.push_back({state.store->parseStorePath(path), {name}});
return App {
.context = std::move(context2),
.program = program,
};
}
else if (type == "derivation") {
auto drvPath = cursor->forceDerivation();
auto outPath = cursor->getAttr(state.sOutPath)->getString();
auto outputName = cursor->getAttr(state.sOutputName)->getString();
auto name = cursor->getAttr(state.sName)->getString();
auto aMeta = cursor->maybeGetAttr("meta");
auto aMainProgram = aMeta ? aMeta->maybeGetAttr("mainProgram") : nullptr;
auto mainProgram =
aMainProgram
? aMainProgram->getString()
: DrvName(name).name;
auto program = outPath + "/bin/" + mainProgram;
checkProgram(program);
return App {
.context = { { drvPath, {outputName} } },
.program = program,
};
}
else
throw Error("attribute '%s' has unsupported type '%s'", attrPath, type);
}
}
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