diff --git a/nixpkgs/qlat-examples-cpp-grid.nix b/nixpkgs/qlat-examples-cpp-grid.nix
index 551824c8..128f197d 100644
--- a/nixpkgs/qlat-examples-cpp-grid.nix
+++ b/nixpkgs/qlat-examples-cpp-grid.nix
@@ -70,10 +70,10 @@ in
       gpu_extra = ''
         pwd
         cp -pv "${../qcore/bin/NVCC.py}" "$PWD/NVCC.py"
-        # patchShebangs --build "$PWD/NVCC.py"
+        patchShebangs --build "$PWD/NVCC.py"
         #
         cp -pv "${../qcore/bin/bind-gpu-qlat.sh}" "$PWD/bind-gpu-qlat.sh"
-        # patchShebangs --build "$PWD/bind-gpu-qlat.sh"
+        patchShebangs --build "$PWD/bind-gpu-qlat.sh"
         export NGPU=${ngpu}
         export mpi_options="$mpi_options $PWD/bind-gpu-qlat.sh"
         #
@@ -148,9 +148,6 @@ in
       #
       echo num_proc=$num_proc
       #
-      # patchShebangs --build */run.sh
-      echo
-      #
       make run-grid -j$num_proc SHELL=$SHELL
       #
       echo
diff --git a/nixpkgs/qlat-examples-cpp.nix b/nixpkgs/qlat-examples-cpp.nix
index 7ce1af92..c1240e73 100644
--- a/nixpkgs/qlat-examples-cpp.nix
+++ b/nixpkgs/qlat-examples-cpp.nix
@@ -65,10 +65,10 @@ in
       gpu_extra = ''
         pwd
         cp -pv "${../qcore/bin/NVCC.py}" "$PWD/NVCC.py"
-        # patchShebangs --build "$PWD/NVCC.py"
+        patchShebangs --build "$PWD/NVCC.py"
         #
         cp -pv "${../qcore/bin/bind-gpu-qlat.sh}" "$PWD/bind-gpu-qlat.sh"
-        # patchShebangs --build "$PWD/bind-gpu-qlat.sh"
+        patchShebangs --build "$PWD/bind-gpu-qlat.sh"
         export NGPU=${ngpu}
         export mpi_options="$mpi_options $PWD/bind-gpu-qlat.sh"
         #
@@ -136,9 +136,6 @@ in
       echo NIX_BUILD_TOP=$NIX_BUILD_TOP
       echo
       #
-      # patchShebangs --build */run.sh
-      echo
-      #
       echo num_proc=$num_proc
       #
       make run -j$num_proc SHELL=$SHELL
diff --git a/nixpkgs/qlat-examples-py-cps.nix b/nixpkgs/qlat-examples-py-cps.nix
index 7b7c9724..dc64611c 100644
--- a/nixpkgs/qlat-examples-py-cps.nix
+++ b/nixpkgs/qlat-examples-py-cps.nix
@@ -74,10 +74,10 @@ in
       gpu_extra = ''
         pwd
         cp -pv "${../qcore/bin/NVCC.py}" "$PWD/NVCC.py"
-        # patchShebangs --build "$PWD/NVCC.py"
+        patchShebangs --build "$PWD/NVCC.py"
         #
         cp -pv "${../qcore/bin/bind-gpu-qlat.sh}" "$PWD/bind-gpu-qlat.sh"
-        # patchShebangs --build "$PWD/bind-gpu-qlat.sh"
+        patchShebangs --build "$PWD/bind-gpu-qlat.sh"
         export NGPU=${ngpu}
         export mpi_options="$mpi_options $PWD/bind-gpu-qlat.sh"
         #
@@ -146,9 +146,6 @@ in
       #
       echo num_proc=$num_proc
       #
-      # patchShebangs --build */run.py
-      echo
-      #
       make update-sources SHELL=$SHELL
       echo
       make run-cps -j$num_proc SHELL=$SHELL
diff --git a/nixpkgs/qlat-examples-py-gpt.nix b/nixpkgs/qlat-examples-py-gpt.nix
index 6721c574..2d4e1934 100644
--- a/nixpkgs/qlat-examples-py-gpt.nix
+++ b/nixpkgs/qlat-examples-py-gpt.nix
@@ -71,10 +71,10 @@ in
       gpu_extra = ''
         pwd
         cp -pv "${../qcore/bin/NVCC.py}" "$PWD/NVCC.py"
-        # patchShebangs --build "$PWD/NVCC.py"
+        patchShebangs --build "$PWD/NVCC.py"
         #
         cp -pv "${../qcore/bin/bind-gpu-qlat.sh}" "$PWD/bind-gpu-qlat.sh"
-        # patchShebangs --build "$PWD/bind-gpu-qlat.sh"
+        patchShebangs --build "$PWD/bind-gpu-qlat.sh"
         export NGPU=${ngpu}
         export mpi_options="$mpi_options $PWD/bind-gpu-qlat.sh"
         #
@@ -143,9 +143,6 @@ in
       #
       echo num_proc=$num_proc
       #
-      # patchShebangs --build */run.py
-      echo
-      #
       make update-sources SHELL=$SHELL
       echo
       make run-gpt -j$num_proc SHELL=$SHELL
diff --git a/nixpkgs/qlat-examples-py.nix b/nixpkgs/qlat-examples-py.nix
index a510ea0f..0960bdfa 100644
--- a/nixpkgs/qlat-examples-py.nix
+++ b/nixpkgs/qlat-examples-py.nix
@@ -65,10 +65,10 @@ in
       gpu_extra = ''
         pwd
         cp -pv "${../qcore/bin/NVCC.py}" "$PWD/NVCC.py"
-        # patchShebangs --build "$PWD/NVCC.py"
+        patchShebangs --build "$PWD/NVCC.py"
         #
         cp -pv "${../qcore/bin/bind-gpu-qlat.sh}" "$PWD/bind-gpu-qlat.sh"
-        # patchShebangs --build "$PWD/bind-gpu-qlat.sh"
+        patchShebangs --build "$PWD/bind-gpu-qlat.sh"
         export NGPU=${ngpu}
         export mpi_options="$mpi_options $PWD/bind-gpu-qlat.sh"
         #
@@ -137,9 +137,6 @@ in
       #
       echo num_proc=$num_proc
       #
-      # patchShebangs --build */run.py
-      # echo
-      #
       make update-sources SHELL=$SHELL
       echo
       make run -j$num_proc SHELL=$SHELL