diff options
Diffstat (limited to 'src/nix-store/nix-store.cc')
| -rw-r--r-- | src/nix-store/nix-store.cc | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/nix-store/nix-store.cc b/src/nix-store/nix-store.cc index 3bbefedbe..2f754c961 100644 --- a/src/nix-store/nix-store.cc +++ b/src/nix-store/nix-store.cc @@ -72,11 +72,13 @@ static PathSet realisePath(StorePathWithOutputs path, bool build = true) Derivation drv = store->derivationFromPath(path.path); rootNr++; + /* FIXME: Encode this empty special case explicitly in the type. */ if (path.outputs.empty()) for (auto & i : drv.outputs) path.outputs.insert(i.first); PathSet outputs; for (auto & j : path.outputs) { + /* Match outputs of a store path with outputs of the derivation that produces it. */ DerivationOutputs::iterator i = drv.outputs.find(j); if (i == drv.outputs.end()) throw Error("derivation '%s' does not have an output named '%s'", @@ -141,6 +143,7 @@ static void opRealise(Strings opFlags, Strings opArgs) toDerivedPaths(paths), willBuild, willSubstitute, unknown, downloadSize, narSize); + /* Filter out unknown paths from `paths`. */ if (ignoreUnknown) { std::vector<StorePathWithOutputs> paths2; for (auto & i : paths) @@ -457,7 +460,7 @@ static void opPrintEnv(Strings opFlags, Strings opArgs) /* Print each environment variable in the derivation in a format * that can be sourced by the shell. */ for (auto & i : drv.env) - cout << format("export %1%; %1%=%2%\n") % i.first % shellEscape(i.second); + logger->cout("export %1%; %1%=%2%\n", i.first, shellEscape(i.second)); /* Also output the arguments. This doesn't preserve whitespace in arguments. */ @@ -1020,6 +1023,7 @@ static int main_nix_store(int argc, char * * argv) { Strings opFlags, opArgs; Operation op = 0; + bool readFromStdIn; parseCmdLine(argc, argv, [&](Strings::iterator & arg, const Strings::iterator & end) { Operation oldOp = op; @@ -1078,6 +1082,8 @@ static int main_nix_store(int argc, char * * argv) op = opGenerateBinaryCacheKey; else if (*arg == "--add-root") gcRoot = absPath(getArg(*arg, arg, end)); + else if (*arg == "--stdin" && !isatty(STDIN_FILENO)) + readFromStdIn = true; else if (*arg == "--indirect") ; else if (*arg == "--no-output") @@ -1090,6 +1096,13 @@ static int main_nix_store(int argc, char * * argv) else opArgs.push_back(*arg); + if (readFromStdIn && op != opImport && op != opRestore && op != opServe) { + std::string word; + while (std::cin >> word) { + opArgs.emplace_back(std::move(word)); + }; + } + if (oldOp && oldOp != op) throw UsageError("only one operation may be specified"); |