diff --git a/.config/emacs/init.el b/.config/emacs/init.el
index de9791c..94dbd23 100644
--- a/.config/emacs/init.el
+++ b/.config/emacs/init.el
@@ -8,11 +8,6 @@
     (zerop (call-process "git" nil nil nil
                          "-C" dirname "ls-files" "--error-unmatch" filename))))
 
-(defun should-auto-save-current-buffer-p ()
-  "Check whether the current buffer should be autosaved."
-  (when buffer-file-name
-    (git-tracked-file-p buffer-file-name)))
-
 (defun find-init-file ()
   "Find the user's init file"
   (interactive)
@@ -47,7 +42,7 @@
   ; keep-sorted start
   (auto-save-interval 20)
   (auto-save-visited-mode t)
-  (auto-save-visited-predicate #'should-auto-save-current-buffer)
+  (auto-save-visited-predicate (lambda () (git-tracked-file-p buffer-file-name)))
   (column-number-mode t)
   (dired-dwim-target 'dired-dwim-target-next)
   (display-time-24hr-format t)
diff --git a/.config/setup/04-install-deb-packages.sh b/.config/setup/01-install-packages.sh
similarity index 77%
rename from .config/setup/04-install-deb-packages.sh
rename to .config/setup/01-install-packages.sh
index d1e8af7..0b56d5b 100755
--- a/.config/setup/04-install-deb-packages.sh
+++ b/.config/setup/01-install-packages.sh
@@ -10,7 +10,6 @@ DEB_PKGS=(
     audacity
     avahi-daemon
     awscli
-    blueman
     bluez
     borgbackup
     build-essential
@@ -54,7 +53,6 @@ DEB_PKGS=(
     mesa-utils
     minicom
     mpv
-    network-manager-applet
     network-manager-openvpn
     nmap
     ntfs-3g
@@ -106,5 +104,33 @@ META_PKGS=(
     # keep-sorted end
 )
 
+PIPX_PKGS=(
+    # keep-sorted start
+    python-lsp-server
+    rshell
+    ruff
+    # keep-sorted end
+)
+
 sudo DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends --yes "${DEB_PKGS[@]}"
 sudo DEBIAN_FRONTEND=noninteractive apt-get install --install-recommends --yes "${META_PKGS[@]}"
+
+echo 'kernel.perf_event_paranoid=1' | sudo tee '/etc/sysctl.d/51-enable-perf-events.conf'
+
+if (( "${#PIPX_PKGS[@]}" != 0 )); then
+    pipx install "${PIPX_PKGS[@]}"
+fi
+
+PYLSP_PLUGINS=(
+    # keep-sorted start
+    fs
+    podman
+    pydantic
+    pylsp-mypy
+    pylsp-rope
+    pytest
+    types-pyxdg
+    # keep-sorted end
+)
+
+pipx inject python-lsp-server "${PYLSP_PLUGINS[@]}"
diff --git a/.config/setup/02-install-debian-testing.sh b/.config/setup/02-install-debian-testing.sh
deleted file mode 100755
index 7cf2c21..0000000
--- a/.config/setup/02-install-debian-testing.sh
+++ /dev/null
@@ -1,10 +0,0 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
-
-sudo cp "$(systemd-path user-configuration)"/setup/sources.list.d/debian.sources /etc/apt/sources.list.d/
-sudo rm /etc/apt/sources.list
-
-sudo apt update
-sudo apt --yes full-upgrade
diff --git a/.config/setup/12-setup-packages.sh b/.config/setup/02-setup-packages.sh
similarity index 53%
rename from .config/setup/12-setup-packages.sh
rename to .config/setup/02-setup-packages.sh
index 48c0136..859047f 100755
--- a/.config/setup/12-setup-packages.sh
+++ b/.config/setup/02-setup-packages.sh
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 systemctl --user enable --now syncthing.service
 
@@ -10,5 +7,3 @@ mkdir --parents ~/Pictures/screenshots
 pre-commit install
 
 sudo usermod --append --groups dialout "${USER}"
-
-echo 'kernel.perf_event_paranoid=1' | sudo tee '/etc/sysctl.d/51-enable-perf-events.conf'
diff --git a/.config/setup/14-install-cron-jobs.sh b/.config/setup/03-install-cron-jobs.sh
similarity index 79%
rename from .config/setup/14-install-cron-jobs.sh
rename to .config/setup/03-install-cron-jobs.sh
index 22851b8..829ad9b 100755
--- a/.config/setup/14-install-cron-jobs.sh
+++ b/.config/setup/03-install-cron-jobs.sh
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 # keep-sorted start
 systemctl --user enable --now backup.timer
diff --git a/.config/setup/16-install-tor.sh b/.config/setup/05-install-tor.sh
similarity index 90%
rename from .config/setup/16-install-tor.sh
rename to .config/setup/05-install-tor.sh
index 5688ea2..4c1e33b 100755
--- a/.config/setup/16-install-tor.sh
+++ b/.config/setup/05-install-tor.sh
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 sudo cp "$(systemd-path user-configuration)"/setup/sources.list.d/tor.sources /etc/apt/sources.list.d/
 sudo chmod 644 /etc/apt/sources.list.d/tor.sources
diff --git a/.config/setup/06-install-git-sync.sh b/.config/setup/06-install-git-sync.sh
new file mode 100755
index 0000000..ac57a8f
--- /dev/null
+++ b/.config/setup/06-install-git-sync.sh
@@ -0,0 +1,3 @@
+#! /usr/bin/sh
+
+resync-git-sync
diff --git a/.config/setup/06-install-pipx-packages.sh b/.config/setup/06-install-pipx-packages.sh
deleted file mode 100755
index 91d04f3..0000000
--- a/.config/setup/06-install-pipx-packages.sh
+++ /dev/null
@@ -1,30 +0,0 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
-
-PIPX_PKGS=(
-    # keep-sorted start
-    python-lsp-server
-    rshell
-    ruff
-    # keep-sorted end
-)
-
-if (( "${#PIPX_PKGS[@]}" != 0 )); then
-    pipx install "${PIPX_PKGS[@]}"
-fi
-
-PYLSP_PLUGINS=(
-    # keep-sorted start
-    fs
-    podman
-    pydantic
-    pylsp-mypy
-    pylsp-rope
-    pytest
-    types-pyxdg
-    # keep-sorted end
-)
-
-pipx inject python-lsp-server "${PYLSP_PLUGINS[@]}"
diff --git a/.config/setup/20-install-zoom.sh b/.config/setup/10-install-zoom.sh
similarity index 77%
rename from .config/setup/20-install-zoom.sh
rename to .config/setup/10-install-zoom.sh
index d1260cc..72dd1f9 100755
--- a/.config/setup/20-install-zoom.sh
+++ b/.config/setup/10-install-zoom.sh
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 curl --location --output-dir /tmp --remote-name https://zoom.us/client/latest/zoom_amd64.deb
 sudo apt-get install --no-install-recommends --yes /tmp/zoom_amd64.deb
diff --git a/.config/setup/31-initialize-backup-repository.sh b/.config/setup/11-initialize-backup-repository.sh
similarity index 56%
rename from .config/setup/31-initialize-backup-repository.sh
rename to .config/setup/11-initialize-backup-repository.sh
index fe2c0cf..26c475e 100755
--- a/.config/setup/31-initialize-backup-repository.sh
+++ b/.config/setup/11-initialize-backup-repository.sh
@@ -1,9 +1,6 @@
-#! /usr/bin/bash
+#! /usr/bin/sh
 
-set -euo pipefail
-IFS=$'\n\t'
-
-sudo mkdir --parents "${BORG_REPO}"
+sudo mkdir -p "${BORG_REPO}"
 sudo chown "${USER}":"${USER}" "${BORG_REPO}"
 sudo chmod 700 "${BORG_REPO}"
 
diff --git a/.config/setup/18-install-git-sync.sh b/.config/setup/18-install-git-sync.sh
deleted file mode 100755
index c5824c1..0000000
--- a/.config/setup/18-install-git-sync.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
-
-resync-git-sync
diff --git a/.config/setup/22-install-github-packages.sh b/.config/setup/22-install-github-packages.sh
new file mode 100755
index 0000000..13d5478
--- /dev/null
+++ b/.config/setup/22-install-github-packages.sh
@@ -0,0 +1,3 @@
+#! /usr/bin/sh
+
+ghup
diff --git a/.config/setup/43-install-emacs-lilypond-mode.sh b/.config/setup/23-install-emacs-lilypond-mode.sh
similarity index 62%
rename from .config/setup/43-install-emacs-lilypond-mode.sh
rename to .config/setup/23-install-emacs-lilypond-mode.sh
index cf53bf2..97855fd 100755
--- a/.config/setup/43-install-emacs-lilypond-mode.sh
+++ b/.config/setup/23-install-emacs-lilypond-mode.sh
@@ -1,11 +1,8 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 projdir="$(systemd-path user)"/Projects
-mkdir --parents "${projdir}"
-rm --force --recursive "${projdir}/lilypond"
+mkdir -p "${projdir}"
+rm -rf "${projdir}/lilypond"
 cd "${projdir}" || exit
 git clone --depth=1 https://github.com/lilypond/lilypond
 cd lilypond || exit
diff --git a/.config/setup/30-install-cargo-packages.sh b/.config/setup/30-install-cargo-packages.sh
new file mode 100755
index 0000000..e46a08d
--- /dev/null
+++ b/.config/setup/30-install-cargo-packages.sh
@@ -0,0 +1,3 @@
+#! /usr/bin/sh
+
+cargo install zellij
diff --git a/.config/setup/42-install-github-packages.sh b/.config/setup/42-install-github-packages.sh
deleted file mode 100755
index 1ebd793..0000000
--- a/.config/setup/42-install-github-packages.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
-
-ghup
diff --git a/.config/setup/50-install-cargo-packages.sh b/.config/setup/50-install-cargo-packages.sh
deleted file mode 100755
index b8856e7..0000000
--- a/.config/setup/50-install-cargo-packages.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
-
-cargo install zellij
diff --git a/.config/sway/config b/.config/sway/config
index 43bcd99..b76ca8f 100644
--- a/.config/sway/config
+++ b/.config/sway/config
@@ -294,9 +294,6 @@ bar {
     }
 }
 
-exec blueman-applet
-exec nm-applet
-
 workspace_layout tabbed
 for_window [class="."] inhibit_idle fullscreen
 for_window [app_id="."] inhibit_idle fullscreen
diff --git a/.local/bin/ghup b/.local/bin/ghup
index d198be9..74de4a3 100755
--- a/.local/bin/ghup
+++ b/.local/bin/ghup
@@ -1,10 +1,7 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 STATE_DIR="$(systemd-path user-state-private)"/github-versions
-mkdir --parents "${STATE_DIR}"
+mkdir -p "${STATE_DIR}"
 
 github_update() {
     package="$1"
diff --git a/.local/bin/git-resign b/.local/bin/git-resign
index 6d45d8e..90a7a05 100755
--- a/.local/bin/git-resign
+++ b/.local/bin/git-resign
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 rebase_marker="$(git rev-parse --show-toplevel)/.git/rebase-merge/done"
 while [ -f "${rebase_marker}" ]
diff --git a/.local/bin/kill-current-zellij-session b/.local/bin/kill-current-zellij-session
index 378e1bf..ac22ec5 100755
--- a/.local/bin/kill-current-zellij-session
+++ b/.local/bin/kill-current-zellij-session
@@ -1,6 +1,3 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 zellij delete-session --force "${ZELLIJ_SESSION_NAME}"
diff --git a/.local/bin/leave b/.local/bin/leave
index 438c45e..7d51b3f 100755
--- a/.local/bin/leave
+++ b/.local/bin/leave
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 listopts() {
     echo "⏼ Shut down"
diff --git a/.local/bin/make-backup b/.local/bin/make-backup
index 251a77c..7d05e48 100755
--- a/.local/bin/make-backup
+++ b/.local/bin/make-backup
@@ -1,11 +1,8 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 TS_DIR="$(systemd-path user-state-private)"/backup
 
-mkdir --parents "${TS_DIR}"
+mkdir -p "${TS_DIR}"
 
 backup () {
     target=$1
diff --git a/.local/bin/no-ipv6 b/.local/bin/no-ipv6
index 3ad8edb..e1192d5 100755
--- a/.local/bin/no-ipv6
+++ b/.local/bin/no-ipv6
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 sudo sysctl net.ipv6.conf.all.disable_ipv6=1
 "$@"
diff --git a/.local/bin/package-alert b/.local/bin/package-alert
index 2d11eb9..1bce7c2 100755
--- a/.local/bin/package-alert
+++ b/.local/bin/package-alert
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 WATCHLIST="$(systemd-path user-shared)"/package-alert/watchlist
 
diff --git a/.local/bin/pull-emacs-tide b/.local/bin/pull-emacs-tide
index f41212c..2ceaac9 100755
--- a/.local/bin/pull-emacs-tide
+++ b/.local/bin/pull-emacs-tide
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 podman run \
        --rm \
diff --git a/.local/bin/resync-git-sync b/.local/bin/resync-git-sync
index f167ca8..5486d52 100755
--- a/.local/bin/resync-git-sync
+++ b/.local/bin/resync-git-sync
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 REPO_DIR="$(systemd-path user-state-private)"/git-sync
 if [ -d "${REPO_DIR}" ]
diff --git a/.local/bin/sync-backup b/.local/bin/sync-backup
index 97edd7a..8e6574a 100755
--- a/.local/bin/sync-backup
+++ b/.local/bin/sync-backup
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 export BORG_REPO="/media/backup/"
 
diff --git a/.local/bin/sync-git-repos b/.local/bin/sync-git-repos
index f8ba4c4..d1fce9e 100755
--- a/.local/bin/sync-git-repos
+++ b/.local/bin/sync-git-repos
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 REPO_ROOT_FILE="$(systemd-path user-state-private)"/repo-roots/repo-roots
 
@@ -19,21 +16,14 @@ sync_repo () {
     echo
 }
 
-case "${1:-sync}" in
-    "list")
-        while read -r repo_root; do
-            list_repos "${repo_root}"
-        done < "${REPO_ROOT_FILE}"
-        ;;
-    "sync")
-        while read -r repo_root; do
-            for repo in $(list_repos "${repo_root}"); do
-                sync_repo "${repo}"
-            done
-        done < "${REPO_ROOT_FILE}"
-        ;;
-    *)
-        echo Unknown option \""$1"\"
-        exit 1
-        ;;
-esac
+if [ "list" = "$1" ]; then
+    while read -r repo_root; do
+        list_repos "${repo_root}"
+    done < "${REPO_ROOT_FILE}"
+else
+    while read -r repo_root; do
+        for repo in $(list_repos "${repo_root}"); do
+            sync_repo "${repo}"
+        done
+    done < "${REPO_ROOT_FILE}"
+fi
diff --git a/.local/bin/take-screenshot b/.local/bin/take-screenshot
index f2cf7c2..a586a10 100755
--- a/.local/bin/take-screenshot
+++ b/.local/bin/take-screenshot
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 listopts() {
     echo "📷 Focused monitor"
diff --git a/.local/bin/update-weather b/.local/bin/update-weather
index 25d37c3..6acdf66 100755
--- a/.local/bin/update-weather
+++ b/.local/bin/update-weather
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 # Documentation available in https://github.com/chubin/wttr.in
 curl --http1.1 --show-error --silent 'https://wttr.in/?0&m&q&T&format=3' > /tmp/weather-report.txt
diff --git a/.local/bin/upgrade b/.local/bin/upgrade
index 95784aa..6acd66c 100755
--- a/.local/bin/upgrade
+++ b/.local/bin/upgrade
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 apt_update() {
     sudo --reset-timestamp
diff --git a/.local/bin/vaulter b/.local/bin/vaulter
index f12dd73..f3f17b9 100755
--- a/.local/bin/vaulter
+++ b/.local/bin/vaulter
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 podman --transient-store run --rm -ti \
     --env WAYLAND_DISPLAY \
diff --git a/.local/share/github-versions/dolt b/.local/share/github-versions/dolt
index 21ac93a..72b1559 100755
--- a/.local/share/github-versions/dolt
+++ b/.local/share/github-versions/dolt
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 package=dolt
 repo=dolthub/dolt
diff --git a/.local/share/github-versions/kingfisher b/.local/share/github-versions/kingfisher
index 92eb753..116183e 100755
--- a/.local/share/github-versions/kingfisher
+++ b/.local/share/github-versions/kingfisher
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 package=kingfisher
 repo=mongodb/kingfisher
diff --git a/.local/share/github-versions/minikube b/.local/share/github-versions/minikube
index 733d6f3..8bbc23c 100755
--- a/.local/share/github-versions/minikube
+++ b/.local/share/github-versions/minikube
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 package=minikube
 repo=kubernetes/minikube
diff --git a/.local/share/github-versions/rust-analyzer b/.local/share/github-versions/rust-analyzer
index 69196c7..9452be9 100755
--- a/.local/share/github-versions/rust-analyzer
+++ b/.local/share/github-versions/rust-analyzer
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 package=rust-analyzer
 repo=rust-lang/rust-analyzer
diff --git a/.local/share/github-versions/uv b/.local/share/github-versions/uv
index 3a03d30..856c4c7 100755
--- a/.local/share/github-versions/uv
+++ b/.local/share/github-versions/uv
@@ -1,7 +1,4 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
+#! /usr/bin/sh
 
 package=uv
 repo=astral-sh/uv