diff options
Diffstat (limited to 'src/libexpr/eval.cc')
| -rw-r--r-- | src/libexpr/eval.cc | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/src/libexpr/eval.cc b/src/libexpr/eval.cc index 2b697882b..cf9f6c543 100644 --- a/src/libexpr/eval.cc +++ b/src/libexpr/eval.cc @@ -660,6 +660,14 @@ LocalNoInlineNoReturn(void throwUndefinedVarError(const Pos & pos, const char * }); } +LocalNoInlineNoReturn(void throwMissingArgumentError(const Pos & pos, const char * s, const string & s1)) +{ + throw MissingArgumentError({ + .hint = hintfmt(s, s1), + .errPos = pos + }); +} + LocalNoInline(void addErrorTrace(Error & e, const char * s, const string & s2)) { e.addTrace(std::nullopt, s, s2); @@ -1365,7 +1373,7 @@ void EvalState::autoCallFunction(Bindings & args, Value & fun, Value & res) if (j != args.end()) { actualArgs->attrs->push_back(*j); } else if (!i.def) { - throwUndefinedVarError(i.pos, R"(cannot auto-call a function that has an argument without a default value ('%1%') + throwMissingArgumentError(i.pos, R"(cannot auto-call a function that has an argument without a default value ('%1%') An 'auto-call' is when a nix expression is evaluated without any external arguments. If that nix expression is a function, and that function's arguments all have default @@ -1373,7 +1381,7 @@ values, then all is well. But if the function arguments don't have default values, evaluation fails. -The classic case for this error is evaluating a nix file with nix-build that expects +The classic case for this error is evaluating a nix file that expects to be evaluated by callPackage. # in 'callPackage' format: expression is a function that takes an argument 'stdenv'. # callPackage would implicitly pull 'stdenv' from nixpkgs, then call this function. |