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* Minor simplification.

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This commit is contained in:
Eelco Dolstra 2008-08-25 14:15:56 +00:00
parent 49829da8b4
commit c4f1c2114b
2 changed files with 7 additions and 10 deletions
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15
src/libexpr/get-drvs.cc
View file

@ -102,7 +102,7 @@ static bool getDerivation(EvalState & state, Expr e,
boost::shared_ptr<ATermMap> attrs(new ATermMap());
queryAllAttrs(e, *attrs, false);
Expr a = attrs->get(toATerm("type"));
if (!a || evalStringNoCtx(state, a) != "derivation") return true;
@ -173,24 +173,21 @@ static void getDerivations(EvalState & state, Expr e,
/* !!! undocumented hackery to support combining channels in
nix-env.cc. */
Expr e2 = drvMap.get(toATerm("_combineChannels"));
bool combineChannels = e2 && evalBool(state, e2);
bool combineChannels = drvMap.get(toATerm("_combineChannels"));
for (ATermMap::const_iterator i = drvMap.begin(); i != drvMap.end(); ++i) {
startNest(nest, lvlDebug,
format("evaluating attribute `%1%'") % aterm2String(i->key));
string pathPrefix2 = addToPath(pathPrefix, aterm2String(i->key));
if (combineChannels) {
if (((string) aterm2String(i->key)) != "_combineChannels")
getDerivations(state, i->value, pathPrefix2, autoArgs, drvs, doneExprs);
}
if (combineChannels)
getDerivations(state, i->value, pathPrefix2, autoArgs, drvs, doneExprs);
else if (getDerivation(state, i->value, pathPrefix2, drvs, doneExprs)) {
/* If the value of this attribute is itself an
attribute set, should we recurse into it? => Only
if it has a `recurseForDerivations = true'
attribute. */
ATermList es;
Expr e = evalExpr(state, i->value);
Expr e = evalExpr(state, i->value), e2;
if (matchAttrs(e, es)) {
ATermMap attrs(ATgetLength(es));
queryAllAttrs(e, attrs, false);

2
src/nix-env/nix-env.cc
View file

@ -154,7 +154,7 @@ static Expr loadSourceExpr(EvalState & state, const Path & path)
for a user to have a ~/.nix-defexpr directory that includes
some system-wide directory). */
ATermMap attrs;
attrs.set(toATerm("_combineChannels"), makeAttrRHS(eTrue, makeNoPos()));
attrs.set(toATerm("_combineChannels"), makeAttrRHS(makeList(ATempty), makeNoPos()));
getAllExprs(state, path, attrs);
return makeAttrs(attrs);
}