diff --git a/garlic/stages/isolate/default.nix b/garlic/stages/isolate/default.nix
index dc074e1f..b8c07224 100644
--- a/garlic/stages/isolate/default.nix
+++ b/garlic/stages/isolate/default.nix
@@ -26,9 +26,6 @@ stdenv.mkDerivation {
   desc = "#  $out\n" + (if builtins.hasAttr "desc" nextStage then nextStage.desc else "");
   out = "$out";
   installPhase = ''
-
-    echo PATH=$PATH
-
     substituteAllInPlace stage1
     substituteAllInPlace stage2
 
diff --git a/garlic/stages/isolate/stage1 b/garlic/stages/isolate/stage1
index 02ed71b1..eab02746 100644
--- a/garlic/stages/isolate/stage1
+++ b/garlic/stages/isolate/stage1
@@ -1,7 +1,7 @@
-#!/bin/bash -ex
+#!/bin/bash -e
 
->&2 echo Running isolate stage1
->&2 echo PATH=$PATH
+#>&2 echo Running isolate stage1
+#>&2 echo PATH=$PATH
 
 if [ -e /nix ]; then
   >&2 echo "/nix found, aborting"
@@ -42,5 +42,5 @@ mounts=(
 
 join_flags="${mounts[@]}"
 
-exec $nixjoin -v -i $join_flags $nixhome -- \
+exec $nixjoin -i $join_flags $nixhome -- \
 	env -i "${env[@]}" @out@/bin/stage2
diff --git a/garlic/stages/isolate/stage2 b/garlic/stages/isolate/stage2
index a4ae039d..bc89412e 100644
--- a/garlic/stages/isolate/stage2
+++ b/garlic/stages/isolate/stage2
@@ -1,7 +1,7 @@
-#!/bin/sh -ex
+#!/bin/sh -e
 
->&2 echo Running isolate stage2
->&2 echo PATH=$PATH
+#>&2 echo Running isolate stage2
+#>&2 echo PATH=$PATH
 
 if [ ! -e /nix ]; then
   >&2 echo "/nix not found, aborting" 
diff --git a/garlic/stages/runexp/runexp b/garlic/stages/runexp/runexp
index 5b929a5c..1d615159 100755
--- a/garlic/stages/runexp/runexp
+++ b/garlic/stages/runexp/runexp
@@ -1,4 +1,4 @@
-#!/bin/sh -ex
+#!/bin/sh -e
 
 if [ -e /nix ]; then
     >&2 echo "Cannot use runexp inside nix environment!"
diff --git a/garlic/stages/sbatch.nix b/garlic/stages/sbatch.nix
index 74f696d2..d46c1803 100644
--- a/garlic/stages/sbatch.nix
+++ b/garlic/stages/sbatch.nix
@@ -54,7 +54,7 @@ stdenv.mkDerivation rec {
   installPhase = ''
     mkdir -p $out
     cat > $out/job <<EOF
-    #!/bin/sh -ex
+    #!/bin/sh -e
     #SBATCH --job-name="${jobName}"
     ''
     + sbatchOpt "ntasks" ntasks
@@ -76,7 +76,7 @@ stdenv.mkDerivation rec {
     EOF
     
     cat > $out/run <<EOF
-    #!/bin/sh -ex
+    #!/bin/sh -e
     ${slurm}/bin/sbatch ${nixPrefix}$out/job
     EOF
     chmod +x $out/run
diff --git a/garlic/stages/srun.nix b/garlic/stages/srun.nix
index cfabc5c1..f0b33fd7 100644
--- a/garlic/stages/srun.nix
+++ b/garlic/stages/srun.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   dontPatchShebangs = true;
   installPhase = ''
     cat > $out <<EOF
-    #!/bin/sh -ex
+    #!/bin/sh -e
     exec ${slurm}/bin/srun \
       --mpi=pmi2 \
       --cpu-bind=${cpuBind} \