diff options
| author | Eelco Dolstra <edolstra@gmail.com> | 2019-11-22 16:06:44 +0100 |
|---|---|---|
| committer | Eelco Dolstra <edolstra@gmail.com> | 2019-11-22 16:18:13 +0100 |
| commit | ba87b08f8529e4d9f8c58d8c625152058ceadb75 (patch) | |
| tree | c78196cbeb52273c3d5b99ff8dee314108940b9a /src/nix/upgrade-nix.cc | |
| parent | fd900c45b5ff9c6dc7f3ec814eca4ad603720899 (diff) | |
getEnv(): Return std::optional
This allows distinguishing between an empty value and no value.
Diffstat (limited to 'src/nix/upgrade-nix.cc')
| -rw-r--r-- | src/nix/upgrade-nix.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/nix/upgrade-nix.cc b/src/nix/upgrade-nix.cc index 35c44a70c..6c9e37d04 100644 --- a/src/nix/upgrade-nix.cc +++ b/src/nix/upgrade-nix.cc @@ -106,7 +106,7 @@ struct CmdUpgradeNix : MixDryRun, StoreCommand { Path where; - for (auto & dir : tokenizeString<Strings>(getEnv("PATH"), ":")) + for (auto & dir : tokenizeString<Strings>(getEnv("PATH").value_or(""), ":")) if (pathExists(dir + "/nix-env")) { where = dir; break; |