lib/shell: add optional print functions

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/mk-sandbox-system.nix b/lib/mk-sandbox-system.nix
index b678399..56ccad1 100644
--- a/lib/mk-sandbox-system.nix
+++ b/lib/mk-sandbox-system.nix
@@ -55,8 +55,8 @@ in rec {
       # TODO: also print a summary of the host mount points
       # TODO: also print a summary of the forwarded ports
       interactiveShellInit = lib.mkBefore ''
-        ${lib.optionalString (envVars != {}) (shellLib.printEnvVars envVars)}
-        ${lib.optionalString (tools != []) (shellLib.printBins tools)}
+        ${shellLib.ifSomeAttrs envVars shellLib.printEnvVars}
+        ${shellLib.ifSomeList tools shellLib.printBins}
         echo
       '';
     };