diff --git a/files/launchers/type-1/launcher.sh b/files/launchers/type-1/launcher.sh
index 6a0cb69..2ea2203 100755
--- a/files/launchers/type-1/launcher.sh
+++ b/files/launchers/type-1/launcher.sh
@@ -1,4 +1,6 @@
-#!/usr/bin/env bash
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash -p rofi
+# shellcheck shell=bash
 
 ## Author : Aditya Shakya (adi1090x)
 ## Github : @adi1090x
diff --git a/files/launchers/type-2/launcher.sh b/files/launchers/type-2/launcher.sh
index 3422cd7..0b79eae 100755
--- a/files/launchers/type-2/launcher.sh
+++ b/files/launchers/type-2/launcher.sh
@@ -1,4 +1,6 @@
-#!/usr/bin/env bash
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash -p rofi
+# shellcheck shell=bash
 
 ## Author : Aditya Shakya (adi1090x)
 ## Github : @adi1090x
@@ -16,5 +18,5 @@ theme='style-1'
 
 ## Run
 rofi \
-    -show drun \
-    -theme ${dir}/${theme}.rasi
+  -show drun \
+  -theme "${dir}"/${theme}.rasi
diff --git a/files/launchers/type-3/launcher.sh b/files/launchers/type-3/launcher.sh
index ae97b5f..b903574 100755
--- a/files/launchers/type-3/launcher.sh
+++ b/files/launchers/type-3/launcher.sh
@@ -1,4 +1,6 @@
-#!/usr/bin/env bash
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash -p rofi
+# shellcheck shell=bash
 
 ## Author : Aditya Shakya (adi1090x)
 ## Github : @adi1090x
@@ -15,5 +17,5 @@ theme='style-10'
 
 ## Run
 rofi \
-    -show drun \
-    -theme ${dir}/${theme}.rasi
+  -show drun \
+  -theme "${dir}"/${theme}.rasi
diff --git a/files/launchers/type-4/launcher.sh b/files/launchers/type-4/launcher.sh
index 6572cda..c996eb9 100755
--- a/files/launchers/type-4/launcher.sh
+++ b/files/launchers/type-4/launcher.sh
@@ -1,4 +1,6 @@
-#!/usr/bin/env bash
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash -p rofi
+# shellcheck shell=bash
 
 ## Author : Aditya Shakya (adi1090x)
 ## Github : @adi1090x
@@ -15,5 +17,5 @@ theme='style-1'
 
 ## Run
 rofi \
-    -show drun \
-    -theme ${dir}/${theme}.rasi
+  -show drun \
+  -theme "${dir}"/${theme}.rasi
diff --git a/files/launchers/type-5/launcher.sh b/files/launchers/type-5/launcher.sh
index e9d0a3a..08840aa 100755
--- a/files/launchers/type-5/launcher.sh
+++ b/files/launchers/type-5/launcher.sh
@@ -1,4 +1,6 @@
-#!/usr/bin/env bash
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash -p rofi
+# shellcheck shell=bash
 
 ## Author : Aditya Shakya (adi1090x)
 ## Github : @adi1090x
@@ -14,5 +16,5 @@ theme='style-1'
 
 ## Run
 rofi \
-    -show drun \
-    -theme ${dir}/${theme}.rasi
+  -show drun \
+  -theme "${dir}"/${theme}.rasi
diff --git a/files/launchers/type-6/launcher.sh b/files/launchers/type-6/launcher.sh
index c0b4d33..5b5d1b1 100755
--- a/files/launchers/type-6/launcher.sh
+++ b/files/launchers/type-6/launcher.sh
@@ -1,4 +1,6 @@
-#!/usr/bin/env bash
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash -p rofi
+# shellcheck shell=bash
 
 ## Author : Aditya Shakya (adi1090x)
 ## Github : @adi1090x
@@ -15,5 +17,5 @@ theme='style-1'
 
 ## Run
 rofi \
-    -show drun \
-    -theme ${dir}/${theme}.rasi
+  -show drun \
+  -theme "${dir}"/${theme}.rasi
diff --git a/files/launchers/type-7/launcher.sh b/files/launchers/type-7/launcher.sh
index aa45aa9..45a920c 100755
--- a/files/launchers/type-7/launcher.sh
+++ b/files/launchers/type-7/launcher.sh
@@ -1,4 +1,6 @@
-#!/usr/bin/env bash
+#!/usr/bin/env nix-shell
+#! nix-shell -i bash -p rofi
+# shellcheck shell=bash
 
 ## Author : Aditya Shakya (adi1090x)
 ## Github : @adi1090x
@@ -15,5 +17,5 @@ theme='style-1'
 
 ## Run
 rofi \
-    -show drun \
-    -theme ${dir}/${theme}.rasi
+  -show drun \
+  -theme "${dir}"/${theme}.rasi