diff options
Diffstat (limited to 'third_party/nix/src/nix/log.cc')
-rw-r--r-- | third_party/nix/src/nix/log.cc | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/third_party/nix/src/nix/log.cc b/third_party/nix/src/nix/log.cc new file mode 100644 index 000000000000..f07ec4e93a16 --- /dev/null +++ b/third_party/nix/src/nix/log.cc @@ -0,0 +1,71 @@ +#include "command.hh" +#include "common-args.hh" +#include "shared.hh" +#include "store-api.hh" +#include "progress-bar.hh" + +using namespace nix; + +struct CmdLog : InstallableCommand +{ + CmdLog() + { + } + + std::string name() override + { + return "log"; + } + + std::string description() override + { + return "show the build log of the specified packages or paths, if available"; + } + + Examples examples() override + { + return { + Example{ + "To get the build log of GNU Hello:", + "nix log nixpkgs.hello" + }, + Example{ + "To get the build log of a specific path:", + "nix log /nix/store/lmngj4wcm9rkv3w4dfhzhcyij3195hiq-thunderbird-52.2.1" + }, + Example{ + "To get a build log from a specific binary cache:", + "nix log --store https://cache.nixos.org nixpkgs.hello" + }, + }; + } + + 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 = b.drvPath != "" ? sub->getBuildLog(b.drvPath) : nullptr; + for (auto & output : b.outputs) { + if (log) break; + log = sub->getBuildLog(output.second); + } + 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 RegisterCommand r1(make_ref<CmdLog>()); |