fix: PKGBUILD als -git Paket mit automatischer Versionierung

pkgver() generiert Version aus git describe, makepkg -si
aktualisiert automatisch ohne manuelles Version-Bumpen.

pkg/PKGBUILD

@@ -1,9 +1,9 @@
-# ABOUTME: AUR PKGBUILD for Moongreet — greetd greeter for Wayland.
-# ABOUTME: Builds from git source, installs config and cache directory.
+# ABOUTME: PKGBUILD for Moongreet — greetd greeter for Wayland.
+# ABOUTME: Builds from git source with automatic version detection.
 
 # Maintainer: Dominik Kressler
 
-pkgname=moongreet
+pkgname=moongreet-git
 pkgver=0.1.0
 pkgrel=1
 pkgdesc="A greetd greeter for Wayland, built with Python + GTK4 + gtk4-layer-shell"
@@ -23,10 +23,18 @@ makedepends=(
     'python-installer'
     'python-hatchling'
 )
+provides=('moongreet')
+conflicts=('moongreet')
 install=moongreet.install
-source=("git+${url}.git#tag=v${pkgver}")
+source=("git+${url}.git")
 sha256sums=('SKIP')
 
+pkgver() {
+    cd "$srcdir/greetd-moongreet"
+    git describe --long --tags 2>/dev/null | sed 's/^v//;s/-/.r/;s/-/./' \
+        || printf "0.0.0.r%s.%s" "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)"
+}
+
 build() {
     cd "$srcdir/greetd-moongreet"
     python -m build --wheel --no-isolation