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Always enter first level of attrset in nix search

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This makes nix search always go through the first level of an
attribute set, even if it's not a top level attribute. For instance,
you can now list all GHC compilers with:

$ nix search nixpkgs#haskell.compiler
...

This is similar to how nix-env works when you pass in -A.
This commit is contained in:
Matthew Bauer 2021-02-03 21:22:11 -06:00
parent c8937ba9f3
commit e38cd5becb
1 changed files with 7 additions and 4 deletions
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11
src/nix/search.cc
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@ -81,9 +81,9 @@ struct CmdSearch : InstallableCommand, MixJSON
uint64_t results = 0; uint64_t results = 0;
std::function<void(eval_cache::AttrCursor & cursor, const std::vector<Symbol> & attrPath)> visit; std::function<void(eval_cache::AttrCursor & cursor, const std::vector<Symbol> & attrPath, bool initialRecurse)> visit;
visit = [&](eval_cache::AttrCursor & cursor, const std::vector<Symbol> & attrPath) visit = [&](eval_cache::AttrCursor & cursor, const std::vector<Symbol> & attrPath, bool initialRecurse)
{ {
Activity act(*logger, lvlInfo, actUnknown, Activity act(*logger, lvlInfo, actUnknown,
fmt("evaluating '%s'", concatStringsSep(".", attrPath))); fmt("evaluating '%s'", concatStringsSep(".", attrPath)));
@ -94,7 +94,7 @@ struct CmdSearch : InstallableCommand, MixJSON
auto cursor2 = cursor.getAttr(attr); auto cursor2 = cursor.getAttr(attr);
auto attrPath2(attrPath); auto attrPath2(attrPath);
attrPath2.push_back(attr); attrPath2.push_back(attr);
visit(*cursor2, attrPath2); visit(*cursor2, attrPath2, false);
} }
}; };
@ -150,6 +150,9 @@ struct CmdSearch : InstallableCommand, MixJSON
|| (attrPath[0] == "packages" && attrPath.size() <= 2)) || (attrPath[0] == "packages" && attrPath.size() <= 2))
recurse(); recurse();
else if (initialRecurse)
recurse();
else if (attrPath[0] == "legacyPackages" && attrPath.size() > 2) { else if (attrPath[0] == "legacyPackages" && attrPath.size() > 2) {
auto attr = cursor.maybeGetAttr(state->sRecurseForDerivations); auto attr = cursor.maybeGetAttr(state->sRecurseForDerivations);
if (attr && attr->getBool()) if (attr && attr->getBool())
@ -163,7 +166,7 @@ struct CmdSearch : InstallableCommand, MixJSON
}; };
for (auto & [cursor, prefix] : installable->getCursors(*state)) for (auto & [cursor, prefix] : installable->getCursors(*state))
visit(*cursor, parseAttrPath(*state, prefix)); visit(*cursor, parseAttrPath(*state, prefix), true);
if (!json && !results) if (!json && !results)
throw Error("no results for the given search term(s)!"); throw Error("no results for the given search term(s)!");