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Warn about missing -I paths

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Fixes #121.  Note that we don't warn about missing $NIX_PATH entries
because it's intended that some may be missing (cf. the default
$NIX_PATH on NixOS, which includes paths like /etc/nixos/nixpkgs for
backward compatibility).
This commit is contained in:
Eelco Dolstra 2014-02-26 15:21:56 +01:00
parent 733214144a
commit f14ef84a51
3 changed files with 6 additions and 5 deletions
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5
src/libexpr/parser.y
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@ -608,7 +608,7 @@ Expr * EvalState::parseExprFromString(const string & s, const Path & basePath)
}
void EvalState::addToSearchPath(const string & s)
void EvalState::addToSearchPath(const string & s, bool warn)
{
size_t pos = s.find('=');
string prefix;
@ -624,7 +624,8 @@ void EvalState::addToSearchPath(const string & s)
if (pathExists(path)) {
debug(format("adding path `%1%' to the search path") % path);
searchPath.insert(searchPathInsertionPoint, std::pair<string, Path>(prefix, path));
}
} else if (warn)
printMsg(lvlError, format("warning: Nix search path entry `%1%' does not exist, ignoring") % path);
}