diff options
Diffstat (limited to 'src/libexpr/primops/flake.cc')
| -rw-r--r-- | src/libexpr/primops/flake.cc | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/src/libexpr/primops/flake.cc b/src/libexpr/primops/flake.cc index c08c30c9c..9131080bf 100644 --- a/src/libexpr/primops/flake.cc +++ b/src/libexpr/primops/flake.cc @@ -309,10 +309,17 @@ Flake getFlake(EvalState & state, const FlakeRef & flakeRef, bool impureIsAllowe state.forceAttrs(vInfo); + if (auto epoch = vInfo.attrs->get(state.symbols.create("epoch"))) { + flake.epoch = state.forceInt(*(**epoch).value, *(**epoch).pos); + if (flake.epoch > 2019) + throw Error("flake '%s' requires unsupported epoch %d; please upgrade Nix", flakeRef, flake.epoch); + } else + throw Error("flake '%s' lacks attribute 'epoch'", flakeRef); + if (auto name = vInfo.attrs->get(state.sName)) flake.id = state.forceStringNoCtx(*(**name).value, *(**name).pos); else - throw Error("flake lacks attribute 'name'"); + throw Error("flake '%s' lacks attribute 'name'", flakeRef); if (auto description = vInfo.attrs->get(state.sDescription)) flake.description = state.forceStringNoCtx(*(**description).value, *(**description).pos); @@ -337,7 +344,7 @@ Flake getFlake(EvalState & state, const FlakeRef & flakeRef, bool impureIsAllowe state.forceFunction(*(**provides).value, *(**provides).pos); flake.vProvides = (**provides).value; } else - throw Error("flake lacks attribute 'provides'"); + throw Error("flake '%s' lacks attribute 'provides'", flakeRef); return flake; } |