diff options
| -rw-r--r-- | src/libstore/build.cc | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/libstore/build.cc b/src/libstore/build.cc index ddf4bf00d8c2..3b3cebfb18f1 100644 --- a/src/libstore/build.cc +++ b/src/libstore/build.cc @@ -2202,7 +2202,7 @@ void DerivationGoal::initEnv() env["NIX_BUILD_CORES"] = (format("%d") % settings.buildCores).str(); /* In non-structured mode, add all bindings specified in the - derivation via the environments, except those listed in the + derivation via the environment, except those listed in the passAsFile attribute. Those are passed as file names pointing to temporary files containing the contents. Note that passAsFile is ignored in structure mode because it's not @@ -2258,6 +2258,11 @@ void DerivationGoal::initEnv() Strings varNames = tokenizeString<Strings>(get(drv->env, "impureEnvVars")); for (auto & i : varNames) env[i] = getEnv(i); } + + /* Currently structured log messages piggyback on stderr, but we + may change that in the future. So tell the builder which file + descriptor to use for that. */ + env["NIX_LOG_FD"] = "2"; } |