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Use the Blob login theme in SDDM

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SirBlob committed 2026-09-27 00:45:24 +00:00
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commit 53cf9c31fa
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README.md
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@@ -95,7 +95,7 @@ It runs these steps, in this order, and every one of them is idempotent:
| 6. User units | installs the session services into `~/.config/systemd/user` and enables them |
| 7. systemd drop-ins | writes the shutdown timeouts, oomd thresholds, plocate prune paths, and sleep hooks under `/etc` |
| 8. System services | enables NetworkManager, resolved, bluetooth, cups, avahi, docker, power-profiles-daemon, and oomd, masks `NetworkManager-wait-online`, sets the boot splash to `branding/blob_boot.png`, and sets GRUB up with every other installed OS in its menu |
| 9. Login screen | installs the session entry and the SDDM config, enables `sddm.service`, and sets the default target to `graphical.target` |
| 9. Login screen | installs the session entry, the SDDM config and the Blob login theme, enables `sddm.service`, and sets the default target to `graphical.target` |
| 10. Reload | reloads systemd, restarts the running user services, and in a running session re-renders the theme, reloads Hyprland, and restarts the Blob shell |
| 11. Launch | offers a reboot, or starts the login screen straight away if you decline |
bin/blob-plymouth-set
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@@ -206,7 +206,7 @@ run_root_transaction() {
)
plymouth_default_assets=("${plymouth_theme_assets[@]}" logos/oma.png)
sddm_theme_assets=(Main.qml bullet.png entry-failed.png entry.png lock-failed.png lock.png logo.png)
sddm_default_assets=("${sddm_theme_assets[@]}" metadata.desktop theme.conf)
sddm_default_assets=(Main.qml metadata.desktop theme.conf)
plymouth_assets=()
sddm_assets=()
default/sddm/blob/Main.qml
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@@ -0,0 +1,242 @@
import QtQuick
Rectangle {
id: root
readonly property color backgroundColor: "#1a1b26"
readonly property color textColor: "#ffffff"
readonly property color errorColor: "#f7768e"
readonly property string fontFamily: "monospace"
property int sessionIndex: sessionModel.lastIndex >= 0 ? sessionModel.lastIndex : 0
property string statusMessage: ""
property bool loggingIn: false
width: 1920
height: 1080
color: root.backgroundColor
function sessionName(index) {
var session = sessionNames.itemAt(index)
return session ? session.sessionName : ""
}
function nextSession() {
if (sessionNames.count > 0) root.sessionIndex = (root.sessionIndex + 1) % sessionNames.count
}
function login() {
if (root.loggingIn) return
if (usernameInput.text.length === 0) {
usernameInput.forceActiveFocus()
return
}
root.loggingIn = true
root.statusMessage = ""
sddm.login(usernameInput.text, passwordInput.text, root.sessionIndex)
}
Repeater {
id: sessionNames
model: sessionModel
Item {
required property string name
readonly property string sessionName: name
}
}
Connections {
target: sddm
function onLoginFailed() {
root.loggingIn = false
root.statusMessage = "Wrong password"
passwordInput.text = ""
passwordInput.forceActiveFocus()
}
function onLoginSucceeded() {
root.statusMessage = ""
}
}
Column {
anchors.centerIn: parent
spacing: 28
Image {
id: logo
anchors.horizontalCenter: parent.horizontalCenter
source: "logo.png"
sourceSize.width: 160
sourceSize.height: 160
fillMode: Image.PreserveAspectFit
onStatusChanged: if (status === Image.Error && source.toString().endsWith("logo.png")) source = "logo.svg"
}
Text {
anchors.horizontalCenter: parent.horizontalCenter
text: Qt.formatTime(clock.now, "HH:mm")
color: root.textColor
font.family: root.fontFamily
font.pixelSize: 56
}
Column {
anchors.horizontalCenter: parent.horizontalCenter
spacing: 12
Rectangle {
width: 320
height: 44
radius: 6
color: "transparent"
border.width: 1
border.color: usernameInput.activeFocus ? root.textColor : Qt.rgba(root.textColor.r, root.textColor.g, root.textColor.b, 0.35)
TextInput {
id: usernameInput
anchors.fill: parent
anchors.leftMargin: 14
anchors.rightMargin: 14
verticalAlignment: TextInput.AlignVCenter
text: userModel.lastUser
color: root.textColor
font.family: root.fontFamily
font.pixelSize: 16
clip: true
KeyNavigation.tab: passwordInput
Keys.onReturnPressed: passwordInput.forceActiveFocus()
Keys.onEnterPressed: passwordInput.forceActiveFocus()
Text {
anchors.verticalCenter: parent.verticalCenter
visible: usernameInput.text.length === 0
text: "Username"
color: Qt.rgba(root.textColor.r, root.textColor.g, root.textColor.b, 0.5)
font: usernameInput.font
}
}
}
Rectangle {
width: 320
height: 44
radius: 6
color: "transparent"
border.width: 1
border.color: root.statusMessage.length > 0 ? root.errorColor
: passwordInput.activeFocus ? root.textColor
: Qt.rgba(root.textColor.r, root.textColor.g, root.textColor.b, 0.35)
TextInput {
id: passwordInput
anchors.fill: parent
anchors.leftMargin: 14
anchors.rightMargin: 14
verticalAlignment: TextInput.AlignVCenter
echoMode: TextInput.Password
passwordCharacter: "•"
color: root.textColor
font.family: root.fontFamily
font.pixelSize: 16
clip: true
focus: usernameInput.text.length > 0
KeyNavigation.backtab: usernameInput
Keys.onReturnPressed: root.login()
Keys.onEnterPressed: root.login()
Text {
anchors.verticalCenter: parent.verticalCenter
visible: passwordInput.text.length === 0
text: root.loggingIn ? "Logging in..." : "Password"
color: Qt.rgba(root.textColor.r, root.textColor.g, root.textColor.b, 0.5)
font.family: root.fontFamily
font.pixelSize: 16
}
}
}
Text {
anchors.horizontalCenter: parent.horizontalCenter
height: 20
text: root.statusMessage
color: root.errorColor
font.family: root.fontFamily
font.pixelSize: 14
}
}
}
Row {
anchors.left: parent.left
anchors.bottom: parent.bottom
anchors.margins: 24
Text {
text: "Session: " + root.sessionName(root.sessionIndex)
color: root.textColor
opacity: sessionArea.containsMouse ? 1 : 0.6
font.family: root.fontFamily
font.pixelSize: 14
MouseArea {
id: sessionArea
anchors.fill: parent
hoverEnabled: true
cursorShape: Qt.PointingHandCursor
onClicked: root.nextSession()
}
}
}
Row {
anchors.right: parent.right
anchors.bottom: parent.bottom
anchors.margins: 24
spacing: 24
Repeater {
model: [
{ label: "Reboot", available: sddm.canReboot, action: "reboot" },
{ label: "Shut down", available: sddm.canPowerOff, action: "powerOff" }
]
Text {
required property var modelData
visible: modelData.available
text: modelData.label
color: root.textColor
opacity: powerArea.containsMouse ? 1 : 0.6
font.family: root.fontFamily
font.pixelSize: 14
MouseArea {
id: powerArea
anchors.fill: parent
hoverEnabled: true
cursorShape: Qt.PointingHandCursor
onClicked: modelData.action === "reboot" ? sddm.reboot() : sddm.powerOff()
}
}
}
}
QtObject {
id: clock
property date now: new Date()
}
Timer {
interval: 1000
running: true
repeat: true
onTriggered: clock.now = new Date()
}
Component.onCompleted: {
if (usernameInput.text.length > 0) passwordInput.forceActiveFocus()
else usernameInput.forceActiveFocus()
}
}
default/sddm/blob/metadata.desktop
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@@ -0,0 +1,10 @@
[SddmGreeterTheme]
Name=Blob
Description=Blob login screen
Type=sddm-theme
Version=1.0
MainScript=Main.qml
ConfigFile=theme.conf
QtVersion=6
Theme-Id=blob
Theme-API=2.0
default/sddm/blob/theme.conf
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@@ -0,0 +1,3 @@
[General]
type=color
color=#1a1b26
default/sddm/zz-blob.conf
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@@ -5,7 +5,7 @@ DisplayServer=wayland
CompositorCommand=start-hyprland -- --config /etc/sddm/hyprland-greeter.lua
[Theme]
Current=
Current=blob
[Autologin]
User=
docs/install.md
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@@ -126,7 +126,8 @@ with `--check`.
| File | Why |
| --- | --- |
| `/usr/local/share/wayland-sessions/blob.desktop` | the session SDDM offers |
| `/etc/sddm.conf.d/zz-blob.conf` | Wayland greeter, run on Hyprland, stock theme, remember the last session |
| `/etc/sddm.conf.d/zz-blob.conf` | Wayland greeter, run on Hyprland, Blob theme, remember the last session |
| `/usr/share/sddm/themes/blob/` | the Blob login screen, from `default/sddm/blob/` and `branding/blob_icon.svg` |
| `/etc/sddm/hyprland-greeter.lua` | the greeter's own tiny Hyprland config |
| `/usr/local/bin/blob-hw-gpu-accelerated` | the renderer check that config runs, where SDDM's user can read it |
| `/etc/pam.d/blob-lock-password` | the PAM stack the lock screen authenticates against |
@@ -145,8 +146,8 @@ with `--check`.
The `zz-` prefix is load-bearing. SDDM reads `/etc/sddm.conf.d` in
alphabetical order and the last file wins, so a leftover `10-wayland.conf`,
`10-theme.conf` or `autologin.conf` from another desktop would otherwise
override Blob's. For the same reason `zz-blob.conf` blanks `Theme` and
`Autologin`: a greeter pointed at an uninstalled theme, or an autologin
override Blob's. For the same reason `zz-blob.conf` pins `Theme` to `blob`
and blanks `Autologin`: a greeter pointed at an uninstalled theme, or an autologin
pointed at a session entry that no longer exists, leaves SDDM on a black
screen it never falls back from, and the only way in is a TTY.
install/steps/login.sh
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@@ -9,12 +9,15 @@ greeter_compositor_config=/etc/sddm/hyprland-greeter.lua
blob_greeter_conf="$greeter_config_dir/zz-blob.conf"
blob_autologin_conf="$greeter_config_dir/zzz-blob-autologin.conf"
greeter_gpu_detector=/usr/local/bin/blob-hw-gpu-accelerated
greeter_theme_dir=/usr/share/sddm/themes/blob
greeter_theme_files=(Main.qml metadata.desktop theme.conf)
# SDDM's stock Wayland greeter runs on weston, which Blob does not install.
# Point it at Hyprland with a greeter-only config instead. That config is Lua:
# Hyprland dropped the old hyprlang format, and a config it cannot parse leaves
# the greeter with no compositor and the screen black.
install_login_config() {
install_greeter_theme
install_root_file "$repo_dir/default/sddm/hyprland-greeter.lua" \
"$greeter_compositor_config" "sddm/hyprland-greeter.lua"
install_root_file "$repo_dir/default/sddm/zz-blob.conf" \
@@ -25,6 +28,16 @@ install_login_config() {
/etc/pam.d/blob-lock-password "pam.d/blob-lock-password"
}
install_greeter_theme() {
local file
for file in "${greeter_theme_files[@]}"; do
install_root_file "$repo_dir/default/sddm/blob/$file" \
"$greeter_theme_dir/$file" "sddm/themes/blob/$file"
done
install_root_file "$repo_dir/branding/blob_icon.svg" \
"$greeter_theme_dir/logo.svg" "sddm/themes/blob/logo.svg"
}
install_session_entry() {
install_root_file "$repo_dir/session/blob.desktop" \
"$session_entry_dir/blob.desktop" "wayland session entry"
@@ -75,8 +88,9 @@ report_greeter_compositor() {
say " SDDM cannot draw a greeter without it; it is set in $blob_greeter_conf"
}
# zz-blob.conf blanks Theme and Autologin, so a leftover drop-in cannot point the
# greeter at a theme that was uninstalled or autolog into a session that no
# zz-blob.conf pins Theme to Blob's own and blanks Autologin, so a leftover
# drop-in cannot point the greeter at a theme that was uninstalled or autolog
# into a session that no
# longer exists. Either one leaves SDDM on a black screen it never falls back
# from. Report the leftovers anyway: the file is confusing to find later, and the
# Omarchy ISO wrote an autologin that no package owns, so it outlives Omarchy.
uninstall.sh
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@@ -17,6 +17,10 @@ root_files=(
/etc/sddm.conf.d/10-blob.conf
/etc/sddm.conf.d/99-blob-autologin.conf
/etc/sddm/hyprland-greeter.lua
/usr/share/sddm/themes/blob/Main.qml
/usr/share/sddm/themes/blob/metadata.desktop
/usr/share/sddm/themes/blob/theme.conf
/usr/share/sddm/themes/blob/logo.svg
/etc/systemd/system.conf.d/10-blob.conf
/etc/systemd/system/user@.service.d/10-blob.conf
/etc/systemd/oomd.conf.d/10-blob.conf