lix/src/nix/log.cc
2020-12-21 13:32:28 +01:00

57 lines
1.4 KiB
C++

#include "command.hh"
#include "common-args.hh"
#include "shared.hh"
#include "store-api.hh"
#include "progress-bar.hh"
using namespace nix;
struct CmdLog : InstallableCommand
{
std::string description() override
{
return "show the build log of the specified packages or paths, if available";
}
std::string doc() override
{
return
#include "log.md"
;
}
Category category() override { return catSecondary; }
void run(ref<Store> store) override
{
settings.readOnlyMode = true;
auto subs = getDefaultSubstituters();
subs.push_front(store);
auto b = installable->toBuildable();
RunPager pager;
for (auto & sub : subs) {
auto log = std::visit(overloaded {
[&](BuildableOpaque bo) {
return sub->getBuildLog(bo.path);
},
[&](BuildableFromDrv bfd) {
return sub->getBuildLog(bfd.drvPath);
},
}, b);
if (!log) continue;
stopProgressBar();
printInfo("got build log for '%s' from '%s'", installable->what(), sub->getUri());
std::cout << *log;
return;
}
throw Error("build log of '%s' is not available", installable->what());
}
};
static auto rCmdLog = registerCommand<CmdLog>("log");