X-Git-Url: https://git.immae.eu/?a=blobdiff_plain;f=libs.nix;h=cef85869d513fba5227907955abe20eef49d60d0;hb=6cd8d6ce21e3efeda631037851653c04ad64e41c;hp=da13a0359c227df3790d2d6e5c5a3ae68aa530f4;hpb=02bf0d911c2f7b100e22f9d9fd0b1b6b39274293;p=perso%2FImmae%2FConfig%2FNix.git

diff --git a/libs.nix b/libs.nix
index da13a03..cef8586 100644
--- a/libs.nix
+++ b/libs.nix
@@ -26,4 +26,6 @@ in
       name = "${json.meta.name}-${version}";
       src = fetchgit json.git;
     };
+
+  checkEnv = var: builtins.stringLength (builtins.getEnv var) > 0;
 }