diff options
| -rw-r--r-- | src/libexpr/primops.cc | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc index 6a4b5b042043..f555de73e164 100644 --- a/src/libexpr/primops.cc +++ b/src/libexpr/primops.cc @@ -872,8 +872,12 @@ static void prim_toFile(EvalState & state, const Pos & pos, Value * * args, Valu for (auto path : context) { if (path.at(0) == '=') path = string(path, 1); - if (isDerivation(path)) - throw EvalError(format("in ‘toFile’: the file ‘%1%’ cannot refer to derivation outputs, at %2%") % name % pos); + if (isDerivation(path)) { + /* See prim_unsafeDiscardOutputDependency. */ + if (path.at(0) != '~') + throw EvalError(format("in ‘toFile’: the file ‘%1%’ cannot refer to derivation outputs, at %2%") % name % pos); + path = string(path, 1); + } refs.insert(path); } |