diff --git a/README.org b/README.org
index 45212850..7d4c99aa 100644
--- a/README.org
+++ b/README.org
@@ -31,9 +31,9 @@ published GitHub Pages site is still generated from that document.
 - Container and deployment configuration for personal org-agenda-api instances.
 
 This is not intended to be a generic starter dotfiles repo. Many modules assume
-my users, hostnames, hardware, SSH keys, secrets layout, and local checkout path
-=(~/dotfiles=). It is still useful as a reference for how the pieces fit
-together.
+my users, hostnames, hardware, SSH keys, secrets layout, and shared checkout
+path =/srv/dotfiles= on NixOS machines. It is still useful as a reference for
+how the pieces fit together.
 
 * Layout
 
@@ -65,7 +65,7 @@ The broad feature set is assembled by [[file:nixos/configuration.nix][nixos/conf
 Common workflow:
 
 #+begin_src sh
-cd ~/dotfiles/nixos
+cd /etc/nixos
 just switch
 #+end_src
 
@@ -77,7 +77,7 @@ directly.
 Useful variants:
 
 #+begin_src sh
-cd ~/dotfiles/nixos
+cd /etc/nixos
 just switch-remote
 just switch-local-taffybar
 just remote-switch <host>
@@ -86,8 +86,8 @@ just remote-switch <host>
 Build/check examples:
 
 #+begin_src sh
-nix flake check ~/dotfiles/nixos
-nix build ~/dotfiles/nixos#nixosConfigurations.strixi-minaj.config.system.build.toplevel
+nix flake check /etc/nixos
+nix build /etc/nixos#nixosConfigurations.strixi-minaj.config.system.build.toplevel
 #+end_src
 
 The flake also exposes package/check outputs for Hyprland plugins and a
@@ -177,7 +177,7 @@ behind nginx with ACME certificates and Podman.
 To enter the deployment shell:
 
 #+begin_src sh
-nix develop ~/dotfiles/nixos#org-agenda-api
+nix develop /etc/nixos#org-agenda-api
 #+end_src
 
 * Secrets
@@ -201,7 +201,9 @@ Some third-party or upstream projects are tracked as submodules:
 Clone with submodules when bootstrapping a new checkout:
 
 #+begin_src sh
-git clone --recurse-submodules git@github.com:IvanMalison/dotfiles.git ~/dotfiles
+git clone --recurse-submodules git@github.com:IvanMalison/dotfiles.git /tmp/dotfiles
+cd /tmp/dotfiles
+just setup-shared-dotfiles
 #+end_src
 
 This repo also contains project-local git worktrees under =.worktrees/= during
diff --git a/docs/shared-dotfiles.md b/docs/shared-dotfiles.md
new file mode 100644
index 00000000..5de9312d
--- /dev/null
+++ b/docs/shared-dotfiles.md
@@ -0,0 +1,33 @@
+# Shared Dotfiles Worktree
+
+This repo is intended to live at `/srv/dotfiles` on shared NixOS machines.
+Home Manager links user dotfiles to that shared checkout instead of to
+`$HOME/dotfiles`, so the links work consistently for every managed user.
+
+Set it up from any existing checkout:
+
+```sh
+just setup-shared-dotfiles
+```
+
+The setup command:
+
+- copies the current checkout to `/srv/dotfiles` when needed
+- makes the checkout readable by everyone
+- makes it writable by the `wheel` group
+- sets directory setgid/default ACLs so new files stay group-writable
+- configures Git for group sharing
+- creates `/etc/nixos -> /srv/dotfiles/nixos` when `/etc/nixos` is absent or already a symlink
+
+Use a different target or group when needed:
+
+```sh
+just setup-shared-dotfiles --target /srv/dotfiles --group wheel
+```
+
+If a machine has a real `/etc/nixos` directory and you want to replace it with
+the shared checkout symlink:
+
+```sh
+just setup-shared-dotfiles --force-etc-nixos
+```
diff --git a/dotfiles/agents/AGENTS.md b/dotfiles/agents/AGENTS.md
index 8e6d54c7..21ca30e6 100644
--- a/dotfiles/agents/AGENTS.md
+++ b/dotfiles/agents/AGENTS.md
@@ -26,7 +26,7 @@
 - Only use a non-`.worktrees/` location when the user explicitly asks for a different path.
 
 ## NixOS workflow
-- This system is managed with a Nix flake at `~/dotfiles/nixos`.
+- This system is managed with a Nix flake at `/etc/nixos` (`/srv/dotfiles/nixos`).
 - Use `just switch` from that directory for rebuilds instead of plain `nixos-rebuild`.
 - Host configs live under `machines/`; choose the appropriate host when needed.
 
diff --git a/dotfiles/config/autorandr/jay-lenovo-with-benq/config b/dotfiles/config/autorandr/jay-lenovo-with-benq/config
new file mode 100644
index 00000000..ddc3c313
--- /dev/null
+++ b/dotfiles/config/autorandr/jay-lenovo-with-benq/config
@@ -0,0 +1,37 @@
+output HDMI-A-0
+off
+output DisplayPort-1-1
+off
+output DisplayPort-1-2
+off
+output DisplayPort-1-3
+off
+output DisplayPort-1-4
+off
+output DisplayPort-0
+crtc 1
+mode 2560x1440
+pos 0x0
+rate 144.00
+x-prop-colorspace Default
+x-prop-max_bpc 16
+x-prop-non_desktop 0
+x-prop-scaling_mode None
+x-prop-tearfree auto
+x-prop-underscan off
+x-prop-underscan_hborder 0
+x-prop-underscan_vborder 0
+output eDP
+crtc 0
+mode 2560x1600
+pos 2560x0
+primary
+rate 165.00
+x-prop-colorspace Default
+x-prop-max_bpc 16
+x-prop-non_desktop 0
+x-prop-scaling_mode None
+x-prop-tearfree auto
+x-prop-underscan off
+x-prop-underscan_hborder 0
+x-prop-underscan_vborder 0
diff --git a/dotfiles/config/autorandr/jay-lenovo-with-benq/setup b/dotfiles/config/autorandr/jay-lenovo-with-benq/setup
new file mode 100644
index 00000000..2ec34fae
--- /dev/null
+++ b/dotfiles/config/autorandr/jay-lenovo-with-benq/setup
@@ -0,0 +1,2 @@
+DisplayPort-0 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
+eDP 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
diff --git a/dotfiles/config/hypr/hypridle.conf b/dotfiles/config/hypr/hypridle.conf
index 5ebf8a7f..c8f1337f 100644
--- a/dotfiles/config/hypr/hypridle.conf
+++ b/dotfiles/config/hypr/hypridle.conf
@@ -5,6 +5,6 @@ general {
 
 listener {
     timeout = 300
-    on-timeout = /home/imalison/dotfiles/dotfiles/lib/bin/hypr-screensaver start
-    on-resume = /home/imalison/dotfiles/dotfiles/lib/bin/hypr-screensaver stop
+    on-timeout = hypr-screensaver start
+    on-resume = hypr-screensaver stop
 }
diff --git a/dotfiles/config/hypr/hyprland/binds.lua b/dotfiles/config/hypr/hyprland/binds.lua
index 465c59ee..4cc24cb1 100644
--- a/dotfiles/config/hypr/hyprland/binds.lua
+++ b/dotfiles/config/hypr/hyprland/binds.lua
@@ -49,8 +49,8 @@ function M.setup(ctx)
     bind("XF86AudioRaiseVolume", exec("set_volume --unmute --change-volume +5"), desc("Raise volume", { repeating = true }))
     bind("XF86AudioLowerVolume", exec("set_volume --unmute --change-volume -5"), desc("Lower volume", { repeating = true }))
     bind("XF86AudioMute", exec("set_volume --toggle-mute"), desc("Toggle mute"))
-    bind(hyper .. " + O", exec("/home/imalison/dotfiles/dotfiles/lib/functions/rofi_paswitch"), desc("Open PulseAudio output switcher"))
-    bind(hyper .. " + SHIFT + O", exec("/home/imalison/dotfiles/dotfiles/lib/bin/kef-optical"), desc("Switch KEF speakers to optical input"))
+    bind(hyper .. " + O", exec("rofi_paswitch"), desc("Open PulseAudio output switcher"))
+    bind(hyper .. " + SHIFT + O", exec("kef-optical"), desc("Switch KEF speakers to optical input"))
   end
 
   local function setup_display_wallpaper_and_capture_bindings()
@@ -58,9 +58,9 @@ function M.setup(ctx)
     bind("XF86MonBrightnessDown", exec("brightness.sh down"), desc("Lower display brightness", { repeating = true }))
     bind("Print", exec("flameshot gui"), desc("Take screenshot"))
     bind(hyper .. " + H", exec("flameshot gui"), desc("Take screenshot"))
-    bind(hyper .. " + backslash", exec("/home/imalison/dotfiles/dotfiles/lib/functions/mpg341cx_input toggle"), desc("Toggle monitor input"))
+    bind(hyper .. " + backslash", exec("mpg341cx_input toggle"), desc("Toggle monitor input"))
     bind(hyper .. " + comma", exec("rofi_wallpaper.sh"), desc("Open wallpaper menu"))
-    bind(hyper .. " + SHIFT + comma", exec("/home/imalison/dotfiles/dotfiles/lib/bin/neowall-wallpaper toggle"), desc("Toggle neowall wallpaper"))
+    bind(hyper .. " + SHIFT + comma", exec("neowall-wallpaper toggle"), desc("Toggle neowall wallpaper"))
   end
 
   local function setup_rofi_and_tool_bindings()
diff --git a/dotfiles/config/river-xmonad/Main.hs b/dotfiles/config/river-xmonad/Main.hs
index f007078c..0a671093 100644
--- a/dotfiles/config/river-xmonad/Main.hs
+++ b/dotfiles/config/river-xmonad/Main.hs
@@ -165,7 +165,7 @@ spawnBindings =
   , key (hyper .|. shift) xK_k (spawnAction "rofi_kill_all.sh")
   , key hyper xK_r (spawnAction "rofi_systemd_mono")
   , key hyper xK_9 (spawnAction "start_synergy.sh")
-  , key hyper xK_backslash (spawnAction "$HOME/dotfiles/dotfiles/lib/functions/mpg341cx_input toggle")
+  , key hyper xK_backslash (spawnAction "mpg341cx_input toggle")
   , key hyper xK_i (spawnAction "rofi_select_input.hs")
   , key hyper xK_o (spawnAction "rofi_paswitch")
   , key hyper xK_comma (spawnAction "rofi_wallpaper.sh")
diff --git a/dotfiles/config/taffybar/AGENTS.md b/dotfiles/config/taffybar/AGENTS.md
index 2975d37c..eab7f379 100644
--- a/dotfiles/config/taffybar/AGENTS.md
+++ b/dotfiles/config/taffybar/AGENTS.md
@@ -23,7 +23,7 @@
 - Do not create extra panes or windows unless the user asks.
 
 ## NixOS workflow
-- This system is managed with a Nix flake at `~/dotfiles/nixos`.
+- This system is managed with a Nix flake at `/etc/nixos` (`/srv/dotfiles/nixos`).
 - Use `just switch` from that directory for rebuilds instead of plain `nixos-rebuild`.
 - Host configs live under `machines/`; choose the appropriate host when needed.
 
diff --git a/dotfiles/config/taffybar/TaffybarConfig/Widgets.hs b/dotfiles/config/taffybar/TaffybarConfig/Widgets.hs
index a1c7d7ab..7feafa48 100644
--- a/dotfiles/config/taffybar/TaffybarConfig/Widgets.hs
+++ b/dotfiles/config/taffybar/TaffybarConfig/Widgets.hs
@@ -355,9 +355,9 @@ omniMenuWidget =
               OmniMenuSection
                 "System"
                 [ omniMenuItem "Lock" "system-lock-screen" "loginctl lock-session",
-                  omniMenuItem "Toggle screensaver" "video-display" "/home/imalison/dotfiles/dotfiles/lib/bin/hypr-screensaver toggle",
+                  omniMenuItem "Toggle screensaver" "video-display" "hypr-screensaver toggle",
                   omniMenuItem "Reload WM" "view-refresh" "sh -lc 'hyprctl reload || xmonad --restart || river-xmonad-restart'",
-                  omniMenuItem "Restart taffybar" "view-refresh-symbolic" "/home/imalison/dotfiles/dotfiles/config/taffybar/scripts/taffybar-restart",
+                  omniMenuItem "Restart taffybar" "view-refresh-symbolic" "/srv/dotfiles/dotfiles/config/taffybar/scripts/taffybar-restart",
                   omniMenuItem "Logout" "system-log-out" "sh -lc 'hyprctl dispatch exit || riverctl exit'",
                   omniMenuItem "Suspend" "media-playback-pause" "systemctl suspend",
                   omniMenuItem "Reboot" "system-reboot" "systemctl reboot",
diff --git a/dotfiles/config/xmonad/xmonad.hs b/dotfiles/config/xmonad/xmonad.hs
index 29c0d562..fab09c0a 100644
--- a/dotfiles/config/xmonad/xmonad.hs
+++ b/dotfiles/config/xmonad/xmonad.hs
@@ -1084,11 +1084,11 @@ addKeys conf@XConfig { modMask = modm } =
     , ((hyper, xK_r), spawn "rofi_systemd_mono")
     , ((hyper, xK_9), spawn "start_synergy.sh")
     , ((hyper, xK_slash), spawn "toggle_taffybar")
-    , ((hyper, xK_backslash), spawn "$HOME/dotfiles/dotfiles/lib/functions/mpg341cx_input toggle")
+    , ((hyper, xK_backslash), spawn "mpg341cx_input toggle")
     , ((hyper, xK_space), spawn "skippy-xd")
     , ((hyper, xK_i), spawn "rofi_select_input.hs")
     , ((hyper, xK_o), spawn "rofi_paswitch")
-    , ((hyper .|. shiftMask, xK_o), spawn "$HOME/dotfiles/dotfiles/lib/bin/kef-optical")
+    , ((hyper .|. shiftMask, xK_o), spawn "kef-optical")
     , ((hyper, xK_comma), spawn "rofi_wallpaper.sh")
     , ((hyper, xK_y), spawn "rofi_agentic_skill")
     , ((modm, xK_e), spawn "emacsclient --eval '(emacs-everywhere)'")
diff --git a/dotfiles/hammerspoon/init.lua b/dotfiles/hammerspoon/init.lua
index 61a1b60c..6f172978 100644
--- a/dotfiles/hammerspoon/init.lua
+++ b/dotfiles/hammerspoon/init.lua
@@ -348,7 +348,7 @@ local function toggleMonitorInput()
     end
   end, {
     "-lc",
-    "export PATH=\"$HOME/.nix-profile/bin:/run/current-system/sw/bin:/opt/homebrew/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:$PATH\"; \"$HOME/dotfiles/dotfiles/lib/functions/mpg341cx_input\" toggle",
+    "export PATH=\"$HOME/.nix-profile/bin:/run/current-system/sw/bin:/opt/homebrew/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:$PATH\"; \"${DOTFILES_WORKTREE:-$HOME/dotfiles}/dotfiles/lib/functions/mpg341cx_input\" toggle",
   }):start()
 end
 
diff --git a/dotfiles/lib/bin/rofi_tmcodex.sh b/dotfiles/lib/bin/rofi_tmcodex.sh
index f84850ae..e9a99a36 100755
--- a/dotfiles/lib/bin/rofi_tmcodex.sh
+++ b/dotfiles/lib/bin/rofi_tmcodex.sh
@@ -10,6 +10,7 @@ state_dir="${XDG_STATE_HOME:-$HOME/.local/state}/rofi-tmcodex"
 history_file="$state_dir/dirs"
 codex_home="${CODEX_HOME:-$HOME/.codex}"
 terminal="${TMCODEX_TERMINAL:-${TERMINAL:-ghostty}}"
+dotfiles_root="${DOTFILES_WORKTREE:-/srv/dotfiles}"
 debug_log="$state_dir/debug.log"
 tmcodex_args=("$@")
 mkdir -p "$state_dir"
@@ -29,8 +30,8 @@ emit_candidates() {
   # 2) A few common roots. Keep these before slow/best-effort discovery so
   # rofi still has useful entries if a metadata scan breaks.
   for d in \
-    "$HOME/dotfiles" \
-    "$HOME/dotfiles/nixos" \
+    "$dotfiles_root" \
+    "$dotfiles_root/nixos" \
     "$HOME/Projects" \
     "$HOME/config" \
     "$HOME/org"
@@ -43,7 +44,7 @@ emit_candidates() {
 
   # 4) Shallow git repo discovery under a few likely roots.
   if command -v fd >/dev/null 2>&1; then
-    for root in "$HOME/Projects" "$HOME/dotfiles" "$HOME/config" "$HOME/org"; do
+    for root in "$HOME/Projects" "$dotfiles_root" "$HOME/config" "$HOME/org"; do
       [[ -d "$root" ]] || continue
       # Find ".git" directories; print their parent (repo root).
       # Keep it shallow for speed.
diff --git a/dotfiles/lib/bin/setup-shared-dotfiles b/dotfiles/lib/bin/setup-shared-dotfiles
new file mode 100755
index 00000000..3df03f44
--- /dev/null
+++ b/dotfiles/lib/bin/setup-shared-dotfiles
@@ -0,0 +1,123 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+usage() {
+  cat <<'EOF'
+Usage: setup-shared-dotfiles [--target /srv/dotfiles] [--group wheel] [--no-etc-nixos] [--force-etc-nixos]
+
+Copies this dotfiles checkout to an absent or empty shared machine-local
+worktree, then configures permissions so everyone can read it and sudoers can
+edit it without sudo. When the target already contains a git checkout, this
+repairs permissions/config only and does not overwrite local changes.
+
+Defaults:
+  target: /srv/dotfiles
+  group:  wheel
+
+The script also creates /etc/nixos -> <target>/nixos when /etc/nixos is absent
+or already a symlink. Use --force-etc-nixos to replace an existing /etc/nixos
+path with the symlink.
+EOF
+}
+
+target=/srv/dotfiles
+group=wheel
+manage_etc_nixos=1
+force_etc_nixos=0
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --target)
+      target="$2"
+      shift 2
+      ;;
+    --group)
+      group="$2"
+      shift 2
+      ;;
+    --no-etc-nixos)
+      manage_etc_nixos=0
+      shift
+      ;;
+    --force-etc-nixos)
+      force_etc_nixos=1
+      shift
+      ;;
+    -h|--help)
+      usage
+      exit 0
+      ;;
+    *)
+      echo "Unknown argument: $1" >&2
+      usage >&2
+      exit 2
+      ;;
+  esac
+done
+
+script_dir="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
+source_root="$(git -C "$script_dir" rev-parse --show-toplevel)"
+target="$(realpath -m "$target")"
+
+if ! getent group "$group" >/dev/null; then
+  echo "Group '$group' does not exist" >&2
+  exit 1
+fi
+
+sudo install -d -m 2775 -o root -g "$group" "$(dirname "$target")"
+
+if [[ "$source_root" != "$target" ]]; then
+  target_has_content=0
+  if [[ -d "$target" ]] && find "$target" -mindepth 1 -maxdepth 1 -print -quit | grep -q .; then
+    target_has_content=1
+  fi
+
+  if [[ "$target_has_content" == 1 && ! -d "$target/.git" ]]; then
+    echo "Refusing to copy into non-empty non-git target: $target" >&2
+    exit 1
+  fi
+
+  if [[ "$target_has_content" == 0 ]]; then
+    sudo install -d -m 2775 -o root -g "$group" "$target"
+    sudo rsync -a --chown="root:$group" "$source_root/" "$target/"
+  else
+    echo "Existing git checkout found at $target; repairing permissions only."
+  fi
+fi
+
+sudo chown -R "root:$group" "$target"
+sudo find "$target" -type d -exec chmod 2775 {} +
+sudo find "$target" -type f -exec chmod u+rw,g+rw,o+r {} +
+
+if command -v setfacl >/dev/null; then
+  sudo setfacl -R -m "g::rwX,o::rX,m::rwX" "$target"
+  sudo setfacl -R -d -m "g::rwX,o::rX,m::rwX" "$target"
+fi
+
+sudo git -C "$target" config core.sharedRepository group
+if ! sudo git config --system --get-all safe.directory 2>/dev/null | grep -Fx -- "$target" >/dev/null; then
+  sudo git config --system --add safe.directory "$target" 2>/dev/null || true
+fi
+
+if [[ "$manage_etc_nixos" == 1 ]]; then
+  nixos_target="$target/nixos"
+  if [[ ! -d "$nixos_target" ]]; then
+    echo "Expected NixOS flake directory is missing: $nixos_target" >&2
+    exit 1
+  fi
+
+  if [[ -L /etc/nixos || ! -e /etc/nixos ]]; then
+    sudo rm -rf /etc/nixos
+    sudo ln -s "$nixos_target" /etc/nixos
+  elif [[ "$force_etc_nixos" == 1 ]]; then
+    backup="/etc/nixos.backup.$(date +%Y%m%d-%H%M%S)"
+    sudo mv /etc/nixos "$backup"
+    sudo ln -s "$nixos_target" /etc/nixos
+    echo "Moved previous /etc/nixos to $backup"
+  else
+    echo "Leaving existing /etc/nixos in place; pass --force-etc-nixos to replace it." >&2
+  fi
+fi
+
+echo "Shared dotfiles worktree ready: $target"
+echo "Nix/Home Manager should use dotfiles-worktree = \"$target\"."
diff --git a/dotfiles/lib/functions/windows_toast b/dotfiles/lib/functions/windows_toast
index bfc136f5..7fbd7cb4 100755
--- a/dotfiles/lib/functions/windows_toast
+++ b/dotfiles/lib/functions/windows_toast
@@ -1,7 +1,7 @@
 #!/usr/bin/env sh
 
 function windows_toast {
-	powershell.exe -File ~/dotfiles/dotfiles/lib/bin/windows-toast.ps1 -Title "$@" 2>/dev/null
+	powershell.exe -File "${DOTFILES_WORKTREE:-/srv/dotfiles}/dotfiles/lib/bin/windows-toast.ps1" -Title "$@" 2>/dev/null
 }
 
 windows_toast "$@"
diff --git a/dotfiles/tmux.conf b/dotfiles/tmux.conf
index fe914808..abd411f2 100644
--- a/dotfiles/tmux.conf
+++ b/dotfiles/tmux.conf
@@ -4,7 +4,7 @@ bind-key C new-session -c '#{pane_current_path}' 'codex --dangerously-bypass-app
 
 source-file -q /etc/tmux-host-style.conf
 
-set -g status-right '#($HOME/dotfiles/dotfiles/lib/functions/multiplexer_host_label --tmux 2>/dev/null || multiplexer_host_label --tmux 2>/dev/null || hostname -s) #{?window_bigger,[#{window_offset_x}#,#{window_offset_y}] ,}"#{=21:pane_title}" %H:%M %d-%b-%y'
+set -g status-right '#(multiplexer_host_label --tmux 2>/dev/null || hostname -s) #{?window_bigger,[#{window_offset_x}#,#{window_offset_y}] ,}"#{=21:pane_title}" %H:%M %d-%b-%y'
 set -g status-right-length 150
 set -g set-titles on
 set -g set-titles-string '#{?#{==:#{session_name},#{window_name}},#{session_name},#{session_name}:#{window_name}}#{?pane_title, - #{pane_title},}'
diff --git a/dotfiles/tmux.powerline b/dotfiles/tmux.powerline
index d54827b8..e0d88b27 100644
--- a/dotfiles/tmux.powerline
+++ b/dotfiles/tmux.powerline
@@ -6,7 +6,7 @@ set -g status-interval 2
 set -g status-justify left
 set -g status-left-length 150
 set -g status-right-length 150
-set -g status-right '#($HOME/dotfiles/dotfiles/lib/functions/multiplexer_host_label --tmux 2>/dev/null || multiplexer_host_label --tmux 2>/dev/null || hostname -s) #(eval $POWERLINE_COMMAND tmux right -R pane_id=`tmux display -p "#D"`)'
+set -g status-right '#(multiplexer_host_label --tmux 2>/dev/null || hostname -s) #(eval $POWERLINE_COMMAND tmux right -R pane_id=`tmux display -p "#D"`)'
 set -g window-status-format "#[fg=white] #[fg=white,bg=black]#I #[fg=white] #[default]#W "
 set -g window-status-current-format "#[fg=black,bg=blue]#[fg=white,bg=blue] #I  #[fg=white,bold]#W #[fg=blue,bg=black,nobold]"
 set-window-option -g window-status-fg white
diff --git a/justfile b/justfile
index 9ff55d88..810a8904 100644
--- a/justfile
+++ b/justfile
@@ -53,3 +53,12 @@ cachix-auth-from-clipboard:
   if command -v wl-paste >/dev/null; then wl-paste --no-newline | cachix authtoken --stdin; printf '' | wl-copy; \
   elif command -v xclip >/dev/null; then xclip -o -selection clipboard | tr -d '\n' | cachix authtoken --stdin; printf '' | xclip -selection clipboard; \
   else echo "No clipboard tool found (expected wl-paste or xclip)." >&2; exit 1; fi
+
+# Install or re-permission the repo as a shared machine-local checkout.
+#
+# Usage:
+# - `just setup-shared-dotfiles`
+# - `just setup-shared-dotfiles --target /srv/dotfiles --group wheel`
+# - `just setup-shared-dotfiles --force-etc-nixos`
+setup-shared-dotfiles *args:
+  ./dotfiles/lib/bin/setup-shared-dotfiles {{args}}
diff --git a/nixos/.claude/skills/bump-overlay-versions/SKILL.md b/nixos/.claude/skills/bump-overlay-versions/SKILL.md
index b99cc162..19305844 100644
--- a/nixos/.claude/skills/bump-overlay-versions/SKILL.md
+++ b/nixos/.claude/skills/bump-overlay-versions/SKILL.md
@@ -7,7 +7,7 @@ description: Use when user asks to bump, update, or upgrade claude-code or codex
 
 ## Overview
 
-Updates claude-code and/or codex to latest versions in `~/dotfiles/nixos/overlay.nix`. Nix requires correct hashes which must be discovered through failed builds.
+Updates claude-code and/or codex to latest versions in `/etc/nixos/overlay.nix`. Nix requires correct hashes which must be discovered through failed builds.
 
 ## Quick Reference
 
@@ -30,7 +30,7 @@ curl -s "https://api.github.com/repos/openai/codex/releases/latest" | jq -r '.ta
 
 ### 2. Update Version and Clear Hashes
 
-In `~/dotfiles/nixos/overlay.nix`:
+In `/etc/nixos/overlay.nix`:
 
 **For claude-code:**
 ```nix
@@ -77,4 +77,4 @@ enableClaudeCodeOverride = true;  # Set false to use nixpkgs claude-code
 
 ## File Location
 
-`~/dotfiles/nixos/overlay.nix`
+`/etc/nixos/overlay.nix`
diff --git a/nixos/AGENTS.md b/nixos/AGENTS.md
index 7ae60487..7cd78ac6 100644
--- a/nixos/AGENTS.md
+++ b/nixos/AGENTS.md
@@ -1,6 +1,6 @@
 # Agent Notes (dotfiles/nixos)
 
-This repository is a single git repo rooted at `~/dotfiles`. This `nixos/` directory is the NixOS flake, but most "user command" scripts and shell functions live outside of it.
+This repository is a single git repo rooted at `/srv/dotfiles` on NixOS machines. This `nixos/` directory is the NixOS flake, but most "user command" scripts and shell functions live outside of it.
 
 ## Where To Put Things
 
@@ -13,7 +13,7 @@ Avoid dropping scripts in `~/bin` or `~/.local/bin` unless the user explicitly a
 
 ## NixOS Rebuild Workflow
 
-- Run `just switch` from `~/dotfiles/nixos` (not `nixos-rebuild` directly).
+- Run `just switch` from `/etc/nixos` or `/srv/dotfiles/nixos` (not `nixos-rebuild` directly).
 - Host configs live under `machines/`.
 
 ## Rofi/Tmux Integration Pointers
diff --git a/nixos/dotfiles-links.nix b/nixos/dotfiles-links.nix
index 3f771646..26fbebd9 100644
--- a/nixos/dotfiles-links.nix
+++ b/nixos/dotfiles-links.nix
@@ -1,10 +1,11 @@
 {
   config,
   lib,
+  nixos,
   ...
 }: let
   # Replicate the useful part of rcm/rcup:
-  # - dotfiles live in ~/dotfiles/dotfiles (no leading dots in the repo)
+  # - dotfiles live in <dotfiles-worktree>/dotfiles (no leading dots in the repo)
   # - links in $HOME add a leading '.' to the first path component
   # - link files individually so unmanaged state can coexist (e.g. ~/.cabal/store)
   #
@@ -13,7 +14,10 @@
   oos = config.lib.file.mkOutOfStoreSymlink;
 
   # Where the checked-out repo lives at runtime (activation time).
-  worktreeDotfiles = "${config.home.homeDirectory}/dotfiles/dotfiles";
+  # Keep this outside individual home directories so links work for every
+  # managed user on a shared machine.
+  worktreeRoot = nixos.config.dotfiles-worktree or "${config.home.homeDirectory}/dotfiles";
+  worktreeDotfiles = "${worktreeRoot}/dotfiles";
 
   # Use the flake source for enumeration (pure), but point links at the worktree.
   srcDotfiles = ../dotfiles;
diff --git a/nixos/environment.nix b/nixos/environment.nix
index 62a6341e..d89df995 100644
--- a/nixos/environment.nix
+++ b/nixos/environment.nix
@@ -6,7 +6,7 @@
   inputs,
   ...
 }: let
-  libDir = "${config.dotfiles-directory}/dotfiles/lib";
+  libDir = "${config.dotfiles-worktree}/dotfiles/lib";
   machineFilenames = builtins.attrNames (builtins.readDir ./machines);
   machineNameFromFilename = filename: builtins.head (builtins.split "\\." filename);
   machineNames = map machineNameFromFilename machineFilenames;
@@ -26,6 +26,15 @@ in
         type = types.path;
         default = ../.;
       };
+      dotfiles-worktree = mkOption {
+        type = types.str;
+        default = "/srv/dotfiles";
+        description = ''
+          Runtime path to the shared, editable dotfiles checkout. Home Manager
+          uses this for out-of-store symlink targets so links are stable across
+          users instead of depending on each user's home directory.
+        '';
+      };
     };
 
     config = {
@@ -105,6 +114,7 @@ in
           }
           // multiplexerAliases;
         variables = {
+          DOTFILES_WORKTREE = config.dotfiles-worktree;
           ROFI_SYSTEMD_TERM = "ghostty -e";
           NIXPKGS_GIT_REV = "${inputs.nixpkgs.rev}";
           NIXPKGS_SOURCE = "${inputs.nixpkgs.outPath}";
diff --git a/nixos/imalison.nix b/nixos/imalison.nix
index b272b12e..5080a0ca 100644
--- a/nixos/imalison.nix
+++ b/nixos/imalison.nix
@@ -1,10 +1,15 @@
-{pkgs, ...}: let
+{
+  config,
+  pkgs,
+  ...
+}: let
   session = import ./session-variables.nix;
+  dotfilesRoot = config.dotfiles-worktree;
   cargoSweepRustTargets = pkgs.writeShellApplication {
     name = "cargo-sweep-rust-targets";
     runtimeInputs = [pkgs.cargo-sweep];
     text = ''
-      for root in /home/imalison/Projects /home/imalison/org /home/imalison/dotfiles; do
+      for root in /home/imalison/Projects /home/imalison/org ${dotfilesRoot}; do
         if [[ -d "$root" ]]; then
           cargo-sweep sweep -r --hidden --maxsize 15GB "$root"
         fi