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* `nix-instantiate --print-args' prints out the arguments of a

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top-level function.
This commit is contained in:
Eelco Dolstra 2006-07-25 21:21:50 +00:00
parent 0e6dc72a7a
commit 2317d8f671
3 changed files with 28 additions and 7 deletions
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6
src/libexpr/get-drvs.cc
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@ -124,15 +124,15 @@ static void getDerivations(EvalState & state, Expr e,
DrvInfos & drvs, Exprs & doneExprs, const string & attrPath,
const string & pathTaken)
{
/* Automatically call functions that have defaults for all
arguments. */
/* Automatically call functions for which each argument has a
default value. */
ATermList formals;
ATerm body, pos;
if (matchFunction(e, formals, body, pos)) {
for (ATermIterator i(formals); i; ++i) {
Expr name, def; ATerm values, def2;
if (!matchFormal(*i, name, values, def2)) abort();
if (!matchDefaultValue(def2, def))
if (!matchDefaultValue(def2, def))
throw TypeError(format("cannot auto-call a function that has an argument without a default value (`%1%')")
% aterm2String(name));
}