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-rw-r--r--nix/libstore/build.cc13
1 files changed, 11 insertions, 2 deletions
diff --git a/nix/libstore/build.cc b/nix/libstore/build.cc
index bbcb55a0b9..2f8b4dabba 100644
--- a/nix/libstore/build.cc
+++ b/nix/libstore/build.cc
@@ -3482,8 +3482,17 @@ void LocalStore::repairPath(const Path & path)
worker.run(goals);
- if (goal->getExitCode() != Goal::ecSuccess)
- throw Error(format("cannot repair path `%1%'") % path, worker.exitStatus());
+ if (goal->getExitCode() != Goal::ecSuccess) {
+ /* Since substituting the path didn't work, if we have a valid
+ deriver, then rebuild the deriver. */
+ Path deriver = queryDeriver(path);
+ if (deriver != "" && isValidPath(deriver)) {
+ goals.clear();
+ goals.insert(worker.makeDerivationGoal(deriver, StringSet(), bmRepair));
+ worker.run(goals);
+ } else
+ throw Error(format("cannot repair path `%1%'") % path, worker.exitStatus());
+ }
}