Add PKGBUILD for Arch

AUR/PKGBUILD

@@ -0,0 +1,24 @@
+pkgname=dirsha256sum
+source=('${pkgname}::git+https://git.shimatta.de/mhu/dirsha256sum.git')
+sha1sums=('SKIP')
+pkgdesc="Script to calculate a sha256sum over an entire directory"
+depends=('coreutils')
+provides=('dirsha256sum')
+
+pkgver() {
+  cd "$pkgname"
+  git describe --long | sed 's/^v//' | sed 's/\([^-]*-g\)/r\1/;s/-/./g'
+}
+
+prepare () {
+
+}
+
+build () {
+
+}
+
+package () {
+	cd "$srcdir/$pkgname"
+	install -D -m775 "$srcdir/$pkgname/$pkgname" "$pkgdir/usr/bin/$pkgname"
+}