lix/src/nix/build.cc

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#include "command.hh"
#include "common-args.hh"
#include "shared.hh"
#include "store-api.hh"
using namespace nix;
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struct CmdBuild : MixDryRun, InstallablesCommand
{
Path outLink = "result";
CmdBuild()
{
mkFlag()
.longName("out-link")
.shortName('o')
.description("path of the symlink to the build result")
.arity(1)
.labels({"path"})
.dest(&outLink);
mkFlag()
.longName("no-link")
.description("do not create a symlink to the build result")
.set(&outLink, Path(""));
}
std::string name() override
{
return "build";
}
std::string description() override
{
return "build a derivation or fetch a store path";
}
void run(ref<Store> store) override
{
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auto buildables = toBuildables(store, dryRun ? DryRun : Build);
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for (size_t i = 0; i < buildables.size(); ++i) {
auto & b(buildables[i]);
if (outLink != "")
for (auto & output : b.outputs)
if (auto store2 = store.dynamic_pointer_cast<LocalFSStore>()) {
std::string symlink = outLink;
if (i) symlink += fmt("-%d", i);
if (output.first != "out") symlink += fmt("-%s", output.first);
store2->addPermRoot(output.second, absPath(symlink), true);
}
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}
}
};
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static RegisterCommand r1(make_ref<CmdBuild>());