diff --git a/setup b/setup
index 2a5592e70b..512fc306c5 100755
--- a/setup
+++ b/setup
@@ -20,16 +20,16 @@ elif command -v -- apt-get >/dev/null 2>&1; then
   alias install='command apt-get install --verbose --show-progress --assume-yes'
 fi
 
-printf -- '\n\n   .\137\137       .\137\137  \137\137\n' 2>/dev/null
-printf -- '   \174\137\137\174 \137\137\137\137 \174\137\137\174\057  \174\137\n' 2>/dev/null
-printf -- '   \174  \174\057    \134\174  \134   \137\137\134\n' 2>/dev/null
-printf -- '   \174  \174   \174  \134  \174\174  \174\n' 2>/dev/null
-printf -- '   \174\137\137\174\137\137\137\174' 2>/dev/null
-printf -- '  \057\137\137\174\174\137\137\174\n' 2>/dev/null
-printf -- '           \134\057\n\n' 2>/dev/null
-printf -- '        Linux setup\n' 2>/dev/null
+printf -- '\n\n   .\137\137       .\137\137  \137\137\n' >&2
+printf -- '   \174\137\137\174 \137\137\137\137 \174\137\137\174\057  \174\137\n' >&2
+printf -- '   \174  \174\057    \134\174  \134   \137\137\134\n' >&2
+printf -- '   \174  \174   \174  \134  \174\174  \174\n' >&2
+printf -- '   \174\137\137\174\137\137\137\174' >&2
+printf -- '  \057\137\137\174\174\137\137\174\n' >&2
+printf -- '           \134\057\n\n' >&2
+printf -- '        Linux setup\n' >&2
 command sleep 1
-printf -- '  a Lucas Larson production\n\n' 2>/dev/null
+printf -- '  a Lucas Larson production\n\n' >&2
 command sleep 1
 
 # start from `$HOME`
@@ -59,7 +59,7 @@ command sed -e '1q' /etc/os-release 2>/dev/null | command grep -q -e 'Arch Linux
 command -v -- apk >/dev/null 2>&1 || {
   # trust apk only if it matches a known checksum
   { set +o xtrace; } 2>/dev/null
-  printf -- 'verifying apk tools integrity...\n' 2>/dev/null
+  printf -- 'verifying apk tools integrity...\n' >&2
   set -o xtrace
   test "$(command wget --output-document=- --quiet -- 'https://web.archive.org/web/20221114182828id_/dl-cdn.alpinelinux.org/alpine/v3.16/main/x86/apk-tools-static-2.12.9-r3.apk' | command cksum)" != '3008894084 1363723'
 } || {
@@ -78,7 +78,7 @@ command -v -- apk >/dev/null 2>&1 || {
 
 # update
 { set +o xtrace; } 2>/dev/null
-printf -- 'updating Alpine Linux repositories...\n' 2>/dev/null
+printf -- 'updating Alpine Linux repositories...\n' >&2
 set -o xtrace
 command apk update --verbose --progress
 command apk upgrade --verbose --progress
@@ -90,19 +90,19 @@ command apk upgrade --verbose --progress
   test -d '/usr/share/man/man4' &&
   test -d '/usr/share/man/man6'; } || {
   { set +o xtrace; } 2>/dev/null
-  printf -- 'installing man pages...\n' 2>/dev/null
+  printf -- 'installing man pages...\n' >&2
   set -o xtrace
   install man-pages
 }
 command -v -- mandoc >/dev/null 2>&1 || {
   { set +o xtrace; } 2>/dev/null
-  printf -- 'installing mandoc for man pages...\n' 2>/dev/null
+  printf -- 'installing mandoc for man pages...\n' >&2
   set -o xtrace
   install mandoc mandoc-doc
 }
 command -v -- less >/dev/null 2>&1 || {
   { set +o xtrace; } 2>/dev/null
-  printf -- 'installing less to read man pages...\n' 2>/dev/null
+  printf -- 'installing less to read man pages...\n' >&2
   set -o xtrace
   install less less-doc
 }
@@ -114,7 +114,7 @@ install coreutils coreutils-doc
 { test -x '/usr/bin/coreutils' &&
   command find --version >/dev/null 2>&1 | command grep -q -e 'findutils'; } || {
   { set +o xtrace; } 2>/dev/null
-  printf -- 'installing Linux utilities...\n' 2>/dev/null
+  printf -- 'installing Linux utilities...\n' >&2
   set -o xtrace
 }
 install util-linux util-linux-doc pciutils pciutils-doc usbutils usbutils-doc coreutils coreutils-doc binutils binutils-doc findutils findutils-doc grep grep-doc wget wget-doc curl curl-doc openssl openssl-doc sudo sudo-doc sed sed-doc attr attr-doc dialog dialog-doc bash bash-doc bash-completion bash-completion-doc readline readline-doc
@@ -129,7 +129,7 @@ command apk update
 # https://wiki.alpinelinux.org/w/index.php?oldid=13842&title=Setting_up_a_ssh-server#OpenSSH
 test -d '/etc/ssh' || {
   { set +o xtrace; } 2>/dev/null
-  printf -- 'installing OpenSSH...\n' 2>/dev/null
+  printf -- 'installing OpenSSH...\n' >&2
   set -o xtrace
   install openssh openssh-doc
 }
@@ -138,7 +138,7 @@ test -d '/etc/ssh' || {
 # https://wiki.alpinelinux.org/w/index.php?oldid=17295&title=Setting_up_a_laptop#Creating_GPG_keys
 test -x '/usr/bin/gpg2' || {
   { set +o xtrace; } 2>/dev/null
-  printf -- 'installing GPG...\n' 2>/dev/null
+  printf -- 'installing GPG...\n' >&2
   set -o xtrace
   install gnupg gnupg-doc
 }
@@ -146,7 +146,7 @@ test -x '/usr/bin/gpg2' || {
 # git
 command -v -- git >/dev/null 2>&1 || {
   { set +o xtrace; } 2>/dev/null
-  printf -- 'installing Git...\n' 2>/dev/null
+  printf -- 'installing Git...\n' >&2
   set -o xtrace
   install git git-doc
 }
@@ -163,28 +163,28 @@ command git config --global --get init.defaultBranch >/dev/null 2>&1 || {
 
 # time zone
 { set +o xtrace; } 2>/dev/null
-printf -- 'updating time zone information...\n' 2>/dev/null
+printf -- 'updating time zone information...\n' >&2
 set -o xtrace
 install --no-cache tzdata tzdata-doc
 
 # python
 { set +o xtrace; } 2>/dev/null
-printf -- 'checking Python installation...\n' 2>/dev/null
+printf -- 'checking Python installation...\n' >&2
 set -o xtrace
 command -v -- python >/dev/null 2>&1 || {
   { set +o xtrace; } 2>/dev/null
-  printf -- 'installing Python...\n' 2>/dev/null
+  printf -- 'installing Python...\n' >&2
   set -o xtrace
   install python3 python3-doc
 }
 
 # pip
 { set +o xtrace; } 2>/dev/null
-printf -- 'checking Python package manager installation...\n' 2>/dev/null
+printf -- 'checking Python package manager installation...\n' >&2
 set -o xtrace
 command -v -- pip >/dev/null 2>&1 && {
   { set +o xtrace; } 2>/dev/null
-  printf -- 'updating pip...\n' 2>/dev/null
+  printf -- 'updating pip...\n' >&2
   set -o xtrace
   command python3 -m pip install --upgrade pip 2>/dev/null
 } || {
@@ -192,13 +192,13 @@ command -v -- pip >/dev/null 2>&1 && {
   {
     printf -- 'installing pip...\n'
     printf -- 'verifying integrity of pip bootstrap file...\n'
-  } 2>/dev/null
+  } >&2
   set -o xtrace
   test "$(command curl --fail --silent --location 'https://web.archive.org/web/20221114002029id_/bootstrap.pypa.io/get-pip.py' | command cksum)" != '3397773170 2569500'
 } || {
   { set +o xtrace; } 2>/dev/null
-  printf -- 'installing pip using bootstrap...\n' 2>/dev/null
-  printf -- 'this may take a while...\n' 2>/dev/null
+  printf -- 'installing pip using bootstrap...\n' >&2
+  printf -- 'this may take a while...\n' >&2
   set -o xtrace
   command curl 'https://web.archive.org/web/20221114002029id_/bootstrap.pypa.io/get-pip.py' | command python3
 }
@@ -206,7 +206,7 @@ command -v -- pip >/dev/null 2>&1 && {
 # mackup
 command -v -- mackup >/dev/null 2>&1 || {
   { set +o xtrace; } 2>/dev/null
-  printf -- 'installing mackup...\n' 2>/dev/null
+  printf -- 'installing mackup...\n' >&2
   set -o xtrace
   command pip install --upgrade mackup
 }
@@ -214,7 +214,7 @@ command -v -- mackup >/dev/null 2>&1 || {
 # zsh
 command -v -- zsh >/dev/null 2>&1 || {
   { set +o xtrace; } 2>/dev/null
-  printf -- 'installing Zsh...\n' 2>/dev/null
+  printf -- 'installing Zsh...\n' >&2
   set -o xtrace
   install zsh zsh-doc
 }
@@ -230,7 +230,7 @@ command -v -- omz >/dev/null 2>&1 ||
   test -d "${ZSH:=${HOME%/}/.oh-my-zsh}" ||
   test "$(command curl --fail --silent --location 'https://web.archive.org/web/20210520175616id_/raw.githubusercontent.com/ohmyzsh/ohmyzsh/02d07f3e3dba0d50b1d907a8062bbaca18f88478/tools/install.sh' | command cksum)" != '1976015298 9942' || {
   { set +o xtrace; } 2>/dev/null
-  printf -- 'installing Oh My Zsh...\n' 2>/dev/null
+  printf -- 'installing Oh My Zsh...\n' >&2
   if command -v -- wget >/dev/null 2>&1; then
     set -o xtrace
     sh -c "$(command wget 'https://web.archive.org/web/20210520175616id_/raw.githubusercontent.com/ohmyzsh/ohmyzsh/02d07f3e3dba0d50b1d907a8062bbaca18f88478/tools/install.sh' --output-document=-)" "" --unattended --keep-zshrc
@@ -243,32 +243,32 @@ command -v -- omz >/dev/null 2>&1 ||
 
 # update, repair everything again before close
 { set +o xtrace; } 2>/dev/null
-printf -- 'updating...\n' 2>/dev/null
+printf -- 'updating...\n' >&2
 set -o xtrace
 command apk update --verbose --verbose --progress
 
 { set +o xtrace; } 2>/dev/null
-printf -- 'upgrading...\n' 2>/dev/null
+printf -- 'upgrading...\n' >&2
 set -o xtrace
 command apk upgrade --verbose --verbose --progress
 
 { set +o xtrace; } 2>/dev/null
-printf -- 'repairing and resolving dependencies...\n' 2>/dev/null
+printf -- 'repairing and resolving dependencies...\n' >&2
 set -o xtrace
 command apk fix --verbose --verbose --depends --progress
 
 { set +o xtrace; } 2>/dev/null
-printf -- 'verifying installations...\n' 2>/dev/null
+printf -- 'verifying installations...\n' >&2
 set -o xtrace
 command apk verify --verbose --verbose --progress && {
   { set +o xtrace; } 2>/dev/null
-  printf -- 'verified\n' 2>/dev/null
+  printf -- 'verified\n' >&2
   set -o xtrace
 }
 
 # cleanup
 { set +o xtrace; } 2>/dev/null
-printf -- 'cleaning up temporary installation files and performing housekeeping...\n' 2>/dev/null
+printf -- 'cleaning up temporary installation files and performing housekeeping...\n' >&2
 set -o xtrace
 
 # message of the day
@@ -337,9 +337,9 @@ test -w '/etc/passwd' &&
 
 # done
 { set +euvx; } 2>/dev/null
-printf -- 'installation complete\n' 2>/dev/null
+printf -- 'installation complete\n' >&2
 command sleep 1
-printf -- 'exiting to apply updates...\n' 2>/dev/null
+printf -- 'exiting to apply updates...\n' >&2
 
 # restore `$PS4`
 PS4="${ps4_temporary:-+ }"
@@ -348,6 +348,6 @@ unset -v -- ps4_temporary
 {
   printf -- '\n'
   printf -- 'done!\n'
-} 2>/dev/null
+} >&2
 
 exit