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Merge pull request #5477 from league/check-overlay-args

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In checkOverlay, accept underscored names for final/prev args.
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Eelco Dolstra 2021-11-03 21:18:58 +01:00 committed by GitHub
parent f1c9ee0364 3f070cc417
commit ae14113969
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1 changed files with 6 additions and 2 deletions
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8
src/nix/flake.cc
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@ -346,10 +346,14 @@ struct CmdFlakeCheck : FlakeCommand
auto checkOverlay = [&](const std::string & attrPath, Value & v, const Pos & pos) {
try {
state->forceValue(v, pos);
if (!v.isLambda() || v.lambda.fun->hasFormals() || std::string(v.lambda.fun->arg) != "final")
if (!v.isLambda() || v.lambda.fun->hasFormals() ||
(std::string(v.lambda.fun->arg) != "final" &&
std::string(v.lambda.fun->arg) != "_final"))
throw Error("overlay does not take an argument named 'final'");
auto body = dynamic_cast<ExprLambda *>(v.lambda.fun->body);
if (!body || body->hasFormals() || std::string(body->arg) != "prev")
if (!body || body->hasFormals() ||
(std::string(body->arg) != "prev" &&
std::string(body->arg) != "_prev"))
throw Error("overlay does not take an argument named 'prev'");
// FIXME: if we have a 'nixpkgs' input, use it to
// evaluate the overlay.