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Diffstat (limited to 'src/libexpr/get-drvs.cc')
| -rw-r--r-- | src/libexpr/get-drvs.cc | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/libexpr/get-drvs.cc b/src/libexpr/get-drvs.cc index d5bc42352..d38ed2df3 100644 --- a/src/libexpr/get-drvs.cc +++ b/src/libexpr/get-drvs.cc @@ -1,6 +1,7 @@ #include "get-drvs.hh" #include "util.hh" #include "eval-inline.hh" +#include "derivations.hh" #include <cstring> #include <regex> @@ -15,6 +16,33 @@ DrvInfo::DrvInfo(EvalState & state, const string & attrPath, Bindings * attrs) } +DrvInfo::DrvInfo(EvalState & state, ref<Store> store, const std::string & drvPathWithOutputs) + : state(&state), attrs(nullptr), attrPath("") +{ + auto spec = parseDrvPathWithOutputs(drvPathWithOutputs); + + drvPath = spec.first; + + auto drv = store->derivationFromPath(drvPath); + + name = storePathToName(drvPath); + + if (spec.second.size() > 1) + throw Error("building more than one derivation output is not supported, in '%s'", drvPathWithOutputs); + + outputName = + spec.second.empty() + ? get(drv.env, "outputName", "out") + : *spec.second.begin(); + + auto i = drv.outputs.find(outputName); + if (i == drv.outputs.end()) + throw Error("derivation '%s' does not have output '%s'", drvPath, outputName); + + outPath = i->second.path; +} + + string DrvInfo::queryName() const { if (name == "" && attrs) { |