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dotfiles/hosts/sctfw004/sbin/monitor-layout
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connor e6644d0616 Rebuild dotfiles as one branch with per-host layers
Replaces the previous repo, which had split into two histories that never
met (mainframe on a dead GitLab remote, the laptops on Gitea) with 146
dirty files across three machines and the NAS never enrolled at all.

Branch-per-machine is gone. One main, with host differences expressed as
small files under hosts/<hostname>/ rather than as branches, so there is
nothing to merge. The reconciled zsh layer reduces 15-33 line forks to
1-7 effective lines per host; distro differences (oh-my-zsh prefix,
syntax-highlighting path, fd vs fdfind) are probed in common/ instead.

Fresh history: the old one carried six plaintext credentials, 45 MB of
mail caches, browser caches and vendored binaries. 5,096 tracked files
and 144 MB become 462 files and 2.6 MB. The .gitignore is now an
allowlist, which is what keeps that true.

Root cause of the rot: ~/.local/bin was a symlink to scripts/ with GOPATH
inside it, so every go install wrote into version control (2.2 GB on the
work laptop). PATH now points at the repo instead of the reverse.

Also: Hyprland replaces sway and is sourced in two halves so $browser is
defined before use; singleton automations carry ConditionHost= alongside
host-layer-only placement; ddns moves from cron to a guarded timer;
package manifests and pkg-snapshot/pkg-restore replace the X11-era
install_scripts/; networkmanager-dmenu added to system76 (the binding
always existed, the package never did).
2026-09-14 14:24:37 -04:00

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#!/bin/sh
# Generate kanshi's dock profile from kernel EDID.
#
# Neither identity kanshi can see is trustworthy here: Hyprland reports each
# monitor's serial on the other monitor's output, and connector names get
# renumbered when the dock brings displays back in a different order. The
# kernel reads EDID over each connector's own DDC channel and is correct, so
# connector names are resolved from serials fresh on every display change.
USER_NAME=connorjohnstone
CONF=/home/$USER_NAME/.config/kanshi/generated
SCALE=1.5
# Serials in the physical left-to-right order they sit on the desk.
ORDER="PB4HB16301805 PB4HB16301801"
exec 9>/run/monitor-layout.lock
flock -w 60 9 || exit 0
[ -n "$LAYOUT_DELAY" ] && sleep "$LAYOUT_DELAY"
connector_for_serial() {
for c in /sys/class/drm/card*-*; do
[ -r "$c/status" ] || continue
[ "$(cat "$c/status")" = connected ] || continue
if edid-decode <"$c/edid" 2>/dev/null | grep -qF "'$1'"; then
echo "$c"
return 0
fi
done
return 1
}
# Same directory as $CONF so the final rename is atomic: kanshi reloads on
# SIGHUP and must never observe a half-written config.
tmp=$(mktemp "$CONF.XXXXXX") || exit 1
trap 'rm -f "$tmp"' EXIT INT TERM
body=""
x=0
for serial in $ORDER; do
path=$(connector_for_serial "$serial") || continue
name=$(basename "$path" | sed 's/^card[0-9]*-//')
mode=$(head -1 "$path/modes" 2>/dev/null)
[ -n "$mode" ] || continue
width=$(awk -v m="${mode%%x*}" -v s="$SCALE" 'BEGIN{printf "%d", m / s}')
body="$body output $name enable position $x,0 scale $SCALE
"
x=$((x + width))
done
if [ -n "$body" ]; then
printf 'profile generated_dock {\n%s output eDP-1 disable\n}\n' "$body" >"$tmp"
else
: >"$tmp"
fi
chown "$USER_NAME:$USER_NAME" "$tmp"
chmod 0644 "$tmp"
mv -f "$tmp" "$CONF"
pkill -HUP -u "$USER_NAME" kanshi