diff --git a/pkgs/development/interpreters/clojurescript/lumo/default.nix b/pkgs/development/interpreters/clojurescript/lumo/default.nix
index 23dd19b6114..d6252a7506a 100644
--- a/pkgs/development/interpreters/clojurescript/lumo/default.nix
+++ b/pkgs/development/interpreters/clojurescript/lumo/default.nix
@@ -240,10 +240,7 @@ stdenv.mkDerivation {
 
 
     # Step 4: Bunde javascript
-echo 1111
-cat scripts/bundle.js
     NODE_ENV=production node scripts/bundle.js
-echo 2222
     node scripts/bundleForeign.js
 
     # Step 5: Backup resources
diff --git a/pkgs/development/node-packages/node-env.nix b/pkgs/development/node-packages/node-env.nix
index 670556bf271..7cc212c41bd 100644
--- a/pkgs/development/node-packages/node-env.nix
+++ b/pkgs/development/node-packages/node-env.nix
@@ -363,7 +363,7 @@ let
 
         npm ${forceOfflineFlag} --nodedir=${nodeSources} ${npmFlags} ${stdenv.lib.optionalString production "--production"} rebuild
 
-        if [ "$dontNpmInstall" != "1" ]
+        if [ "''${dontNpmInstall-}" != "1" ]
         then
             # NPM tries to download packages even when they already exist if npm-shrinkwrap is used.
             rm -f npm-shrinkwrap.json