diff --git a/dotfiles/lib/functions/dbus_introspect b/dotfiles/lib/functions/dbus_introspect
index 1ca6302d..af65da75 100755
--- a/dotfiles/lib/functions/dbus_introspect
+++ b/dotfiles/lib/functions/dbus_introspect
@@ -9,4 +9,4 @@ function dbus-introspect {
 			  org.freedesktop.DBus.Introspectable.Introspect | tail -n +2 | sed -e "s/^ *string//"
 }
 
-dbus-introspect
+dbus-introspect "$@"
diff --git a/dotfiles/lib/functions/environment_variable_exists b/dotfiles/lib/functions/environment_variable_exists
index c2915651..79cab5b3 100755
--- a/dotfiles/lib/functions/environment_variable_exists
+++ b/dotfiles/lib/functions/environment_variable_exists
@@ -5,5 +5,5 @@ function environment_variable_exists {
     [ ! -z $value ]
 }
 
-environment_variable_exists
+environment_variable_exists "$@"
 
diff --git a/dotfiles/lib/functions/get_sink_input_by_pid b/dotfiles/lib/functions/get_sink_input_by_pid
index 41e8ff1d..8c14d9de 100755
--- a/dotfiles/lib/functions/get_sink_input_by_pid
+++ b/dotfiles/lib/functions/get_sink_input_by_pid
@@ -4,5 +4,5 @@ function get_sink_input_by_pid {
 	get_sink_input_info.hs | jq 'select(.application_process_id == "'"$thePID"'")'
 }
 
-get_sink_input_by_pid
+get_sink_input_by_pid "$@"
 
diff --git a/dotfiles/lib/functions/pahelper b/dotfiles/lib/functions/pahelper
index b21c8f27..d94be14a 100755
--- a/dotfiles/lib/functions/pahelper
+++ b/dotfiles/lib/functions/pahelper
@@ -99,4 +99,4 @@ function pahelper {
   esac
 }
 
-pahelper
+pahelper "$@"
diff --git a/dotfiles/lib/functions/path_lines b/dotfiles/lib/functions/path_lines
index 8f80e660..03321e1f 100755
--- a/dotfiles/lib/functions/path_lines
+++ b/dotfiles/lib/functions/path_lines
@@ -1,10 +1,7 @@
 #!/usr/bin/env sh
 
 function path_lines {
-	IFS=':' read -A ADDR <<< "$PATH"
-	for one_path in "${ADDR[@]}"; do
-		echo $one_path
-	done
+	split_by_char ":" "$PATH"
 }
 
 path_lines
diff --git a/dotfiles/lib/functions/set_volume b/dotfiles/lib/functions/set_volume
index 4784f3b2..7639c16f 100755
--- a/dotfiles/lib/functions/set_volume
+++ b/dotfiles/lib/functions/set_volume
@@ -1,14 +1,5 @@
 #!/usr/bin/env sh
 
-function switch_sink_applications()
-{
-  echo switching applications
-  pacmd list-sink-inputs |
-      awk '/index:/{print $2}' |
-      xargs -r -I{} pacmd move-sink-input {} $1 ||
-      echo failed
-}
-
 function set_volume {
   current_default=$(pahelper list | grep '*' | all_after_char ":" | xargs)
   environment_variable_exists USE_ONLY_O_PASINK && pahelper "$current_default"
@@ -17,3 +8,5 @@ function set_volume {
   pulsemixer "$@"
   pashowvolume
 }
+
+set_volume "$@"
diff --git a/nixos/flake.lock b/nixos/flake.lock
index 384c94bf..88f89718 100644
--- a/nixos/flake.lock
+++ b/nixos/flake.lock
@@ -294,7 +294,7 @@
     "nixpkgs_10": {
       "locked": {
         "narHash": "sha256-Iv7J5n9zN4ejsQjnAJLDv+/+/+BH/kgfPAzMXrcqsZ0=",
-        "path": "./nixpkgs",
+        "path": "/nix/store/j2f79wqwpx91rrbn3hpajxnhg76bgwsz-source",
         "type": "path"
       },
       "original": {
@@ -305,7 +305,7 @@
     "nixpkgs_2": {
       "locked": {
         "narHash": "sha256-Iv7J5n9zN4ejsQjnAJLDv+/+/+BH/kgfPAzMXrcqsZ0=",
-        "path": "./nixpkgs",
+        "path": "/nix/store/j2f79wqwpx91rrbn3hpajxnhg76bgwsz-source",
         "type": "path"
       },
       "original": {
@@ -316,7 +316,7 @@
     "nixpkgs_3": {
       "locked": {
         "narHash": "sha256-Iv7J5n9zN4ejsQjnAJLDv+/+/+BH/kgfPAzMXrcqsZ0=",
-        "path": "./nixpkgs",
+        "path": "/nix/store/j2f79wqwpx91rrbn3hpajxnhg76bgwsz-source",
         "type": "path"
       },
       "original": {
@@ -327,7 +327,7 @@
     "nixpkgs_4": {
       "locked": {
         "narHash": "sha256-Iv7J5n9zN4ejsQjnAJLDv+/+/+BH/kgfPAzMXrcqsZ0=",
-        "path": "./nixpkgs",
+        "path": "/nix/store/j2f79wqwpx91rrbn3hpajxnhg76bgwsz-source",
         "type": "path"
       },
       "original": {
@@ -338,7 +338,7 @@
     "nixpkgs_5": {
       "locked": {
         "narHash": "sha256-Iv7J5n9zN4ejsQjnAJLDv+/+/+BH/kgfPAzMXrcqsZ0=",
-        "path": "./nixpkgs",
+        "path": "/nix/store/j2f79wqwpx91rrbn3hpajxnhg76bgwsz-source",
         "type": "path"
       },
       "original": {
@@ -349,7 +349,7 @@
     "nixpkgs_6": {
       "locked": {
         "narHash": "sha256-Iv7J5n9zN4ejsQjnAJLDv+/+/+BH/kgfPAzMXrcqsZ0=",
-        "path": "./nixpkgs",
+        "path": "/nix/store/j2f79wqwpx91rrbn3hpajxnhg76bgwsz-source",
         "type": "path"
       },
       "original": {
@@ -360,7 +360,7 @@
     "nixpkgs_7": {
       "locked": {
         "narHash": "sha256-Iv7J5n9zN4ejsQjnAJLDv+/+/+BH/kgfPAzMXrcqsZ0=",
-        "path": "./nixpkgs",
+        "path": "/nix/store/j2f79wqwpx91rrbn3hpajxnhg76bgwsz-source",
         "type": "path"
       },
       "original": {
@@ -371,7 +371,7 @@
     "nixpkgs_8": {
       "locked": {
         "narHash": "sha256-Iv7J5n9zN4ejsQjnAJLDv+/+/+BH/kgfPAzMXrcqsZ0=",
-        "path": "./nixpkgs",
+        "path": "/nix/store/j2f79wqwpx91rrbn3hpajxnhg76bgwsz-source",
         "type": "path"
       },
       "original": {
@@ -382,7 +382,7 @@
     "nixpkgs_9": {
       "locked": {
         "narHash": "sha256-Iv7J5n9zN4ejsQjnAJLDv+/+/+BH/kgfPAzMXrcqsZ0=",
-        "path": "./nixpkgs",
+        "path": "/nix/store/j2f79wqwpx91rrbn3hpajxnhg76bgwsz-source",
         "type": "path"
       },
       "original": {