diff options
Diffstat (limited to 'third_party/nix/src/libutil/util.hh')
| -rw-r--r-- | third_party/nix/src/libutil/util.hh | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/third_party/nix/src/libutil/util.hh b/third_party/nix/src/libutil/util.hh index b6d726b46c01..b3349c4f39c4 100644 --- a/third_party/nix/src/libutil/util.hh +++ b/third_party/nix/src/libutil/util.hh @@ -26,7 +26,7 @@ struct Source; extern const std::string nativeSystem; /* Return an environment variable. */ -std::string getEnv(const std::string& key, const std::string& def = ""); +std::optional<std::string> getEnv(const std::string& key); /* Get the entire environment. */ std::map<std::string, std::string> getEnv(); |