Add detailed error mesage for coerceTo{String,Path}

4 files changed, 6 insertions, 6 deletions

diff --git a/src/nix/bundle.cc b/src/nix/bundle.cc
index aa074edc2..9ff66899e 100644
--- a/src/nix/bundle.cc
+++ b/src/nix/bundle.cc
@@ -97,13 +97,13 @@ struct CmdBundle : InstallableCommand
             throw Error("the bundler '%s' does not produce a derivation", bundler.what());
 
         PathSet context2;
-        auto drvPath = evalState->coerceToStorePath(*attr1->pos, *attr1->value, context2);
+        auto drvPath = evalState->coerceToStorePath(*attr1->pos, *attr1->value, context2, "");
 
         auto attr2 = vRes->attrs->get(evalState->sOutPath);
         if (!attr2)
             throw Error("the bundler '%s' does not produce a derivation", bundler.what());
 
-        auto outPath = evalState->coerceToStorePath(*attr2->pos, *attr2->value, context2);
+        auto outPath = evalState->coerceToStorePath(*attr2->pos, *attr2->value, context2, "");
 
         store->buildPaths({ DerivedPath::Built { drvPath } });
 
diff --git a/src/nix/eval.cc b/src/nix/eval.cc
index 8cd04d5fe..8ee3ba45b 100644
--- a/src/nix/eval.cc
+++ b/src/nix/eval.cc
@@ -107,7 +107,7 @@ struct CmdEval : MixJSON, InstallableCommand
 
         else if (raw) {
             stopProgressBar();
-            std::cout << *state->coerceToString(noPos, *v, context);
+            std::cout << *state->coerceToString(noPos, *v, context, "While generating the eval command output");
         }
 
         else if (json) {
diff --git a/src/nix/flake.cc b/src/nix/flake.cc
index 703c3beb2..356f89713 100644
--- a/src/nix/flake.cc
+++ b/src/nix/flake.cc
@@ -448,7 +448,7 @@ struct CmdFlakeCheck : FlakeCommand
                 if (auto attr = v.attrs->get(state->symbols.create("path"))) {
                     if (attr->name == state->symbols.create("path")) {
                         PathSet context;
-                        auto path = state->coerceToPath(*attr->pos, *attr->value, context);
+                        auto path = state->coerceToPath(*attr->pos, *attr->value, context, "");
                         if (!store->isInStore(path))
                             throw Error("template '%s' has a bad 'path' attribute");
                         // TODO: recursively check the flake in 'path'.
diff --git a/src/nix/repl.cc b/src/nix/repl.cc
index 7011ff939..0cb68552c 100644
--- a/src/nix/repl.cc
+++ b/src/nix/repl.cc
@@ -461,7 +461,7 @@ bool NixRepl::processLine(std::string line)
 
         if (v.type() == nPath || v.type() == nString) {
             PathSet context;
-            auto filename = state->coerceToString(noPos, v, context);
+            auto filename = state->coerceToString(noPos, v, context, "While evaluating the filename to edit");
             pos.file = state->symbols.create(*filename);
         } else if (v.isLambda()) {
             pos = v.lambda.fun->pos;
@@ -780,7 +780,7 @@ std::ostream & NixRepl::printValue(std::ostream & str, Value & v, unsigned int m
             Bindings::iterator i = v.attrs->find(state->sDrvPath);
             PathSet context;
             if (i != v.attrs->end())
-                str << state->store->printStorePath(state->coerceToStorePath(*i->pos, *i->value, context));
+                str << state->store->printStorePath(state->coerceToStorePath(*i->pos, *i->value, context, "While evaluating the drvPath of a derivation"));
             else
                 str << "???";
             str << "»";