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nix-env: Load files in ~/.nix-defexpr on demand

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So if you do "nix-env -qa -A nixos", then other channels won't be
parsed/evaluated at all.
This commit is contained in:
Eelco Dolstra 2013-09-03 15:45:32 +02:00
parent c57ed84e28
commit 07a08bddf0
3 changed files with 18 additions and 3 deletions
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9
src/nix-env/nix-env.cc
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@ -131,9 +131,12 @@ static void getAllExprs(EvalState & state,
continue;
}
attrs.insert(attrName);
// FIXME: make loading lazy.
Value & v2(*state.allocAttr(v, state.symbols.create(attrName)));
state.evalFile(path2, v2);
/* Load the expression on demand. */
Value & vFun(*state.allocValue());
Value & vArg(*state.allocValue());
state.getBuiltin("import", vFun);
mkString(vArg, path2);
mkApp(*state.allocAttr(v, state.symbols.create(attrName)), vFun, vArg);
}
else if (S_ISDIR(st.st_mode))
/* `path2' is a directory (with no default.nix in it);