71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
#include "command.hh"
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#include "common-args.hh"
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#include "shared.hh"
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#include "store-api.hh"
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#include "progress-bar.hh"
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using namespace nix;
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struct CmdLog : InstallableCommand
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{
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CmdLog()
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{
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}
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std::string name() override
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{
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return "log";
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}
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std::string description() override
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{
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return "show the build log of the specified packages or paths, if available";
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}
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Examples examples() override
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{
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return {
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Example{
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"To get the build log of GNU Hello:",
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"nix log nixpkgs.hello"
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},
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Example{
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"To get the build log of a specific path:",
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"nix log /nix/store/lmngj4wcm9rkv3w4dfhzhcyij3195hiq-thunderbird-52.2.1"
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},
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Example{
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"To get a build log from a specific binary cache:",
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"nix log --store https://cache.nixos.org nixpkgs.hello"
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},
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};
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}
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void run(ref<Store> store) override
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{
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settings.readOnlyMode = true;
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auto subs = getDefaultSubstituters();
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subs.push_front(store);
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auto b = installable->toBuildable();
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RunPager pager;
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for (auto & sub : subs) {
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auto log = b.drvPath != "" ? sub->getBuildLog(b.drvPath) : nullptr;
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for (auto & output : b.outputs) {
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if (log) break;
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log = sub->getBuildLog(output.second);
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}
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if (!log) continue;
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stopProgressBar();
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printInfo("got build log for '%s' from '%s'", installable->what(), sub->getUri());
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std::cout << *log;
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return;
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}
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throw Error("build log of '%s' is not available", installable->what());
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}
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};
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static RegisterCommand r1(make_ref<CmdLog>());
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