nextcloud-native-bin: new package

Nextcloud Native (https://github.com/Obiente/nc-native), an adaptive native
Nextcloud client built with Kotlin/Compose Multiplatform. Upstream publishes a
jpackage .deb per release, which the PKGBUILD repackages unchanged.

Every upstream release is a prerelease and the release list is dominated by
per-build nightly-* releases plus rolling channel-* pointers, so pkg.sh tracks
only the versioned v* tags and syncs the build-numbered asset name along with
the checksum.

nextcloud-native-bin/PKGBUILD

@@ -0,0 +1,51 @@
+# Maintainer: Felitendo
+# This PKGBUILD is updated automatically:
+# https://github.com/Felitendo/PKGBUILDS
+
+pkgname=nextcloud-native-bin
+pkgver=0.1.0alpha.2
+pkgrel=1
+pkgdesc="Adaptive native client for Nextcloud files, media and apps (upstream binary)"
+arch=('x86_64')
+url="https://nc-native.obiente.dev"
+license=('AGPL-3.0-or-later')
+# jpackage bundles its own Java runtime, so these are the shared libraries the
+# upstream .deb declares plus libsecret, whose secret-tool the client calls to
+# store account credentials in the Secret Service.
+depends=('alsa-lib' 'brotli' 'bzip2' 'expat' 'fontconfig' 'freetype2'
+         'gcc-libs' 'glibc' 'hicolor-icon-theme' 'libbsd' 'libglvnd' 'libmd'
+         'libpng' 'libsecret' 'libx11' 'libxau' 'libxcb' 'libxdmcp' 'libxext'
+         'libxi' 'libxrender' 'libxtst' 'xdg-utils' 'zlib')
+optdepends=('gnome-keyring: Secret Service provider for stored accounts'
+            'kwallet: Secret Service provider for stored accounts on Plasma'
+            'fuse2: mount an account as a virtual file system')
+provides=('nextcloud-native')
+conflicts=('nextcloud-native')
+options=('!strip' '!debug')
+# Upstream has no stable release yet: every release is a prerelease, and the
+# repository also carries per-build nightly-* and rolling channel-* releases.
+# Only the versioned tags are packaged, and their asset names embed a build
+# number that cannot be derived from pkgver - both are refreshed automatically.
+_tag="v0.1.0-alpha.2"
+_asset="nextcloudnative_1.0.3822_amd64.deb"
+source=("${pkgname}-${pkgver}.deb::https://github.com/Obiente/nc-native/releases/download/${_tag}/${_asset}")
+noextract=("${pkgname}-${pkgver}.deb")
+sha256sums=('df8e3e616c79c4ce3f7597fa9b88c188a956475f2af4128bc7a70692ebf39325')
+
+package() {
+  # jpackage app image (bundled JRE) in /opt plus the desktop entry, icon and
+  # AppStream metadata upstream adds to the .deb
+  bsdtar -xOf "$srcdir/${pkgname}-${pkgver}.deb" 'data.tar.*' \
+    | bsdtar -xpf - -C "$pkgdir" --exclude './usr/share/doc' ./opt ./usr
+
+  # the launcher resolves its own directory through /proc/self/exe, so a
+  # symlink into /usr/bin keeps the app image self-contained
+  install -d "$pkgdir/usr/bin"
+  ln -s /opt/nextcloudnative/bin/NextcloudNative "$pkgdir/usr/bin/nextcloud-native"
+
+  install -Dm644 "$pkgdir/opt/nextcloudnative/share/doc/copyright" \
+    "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
+
+  # The in-app updater only engages where dpkg or rpm reports the package as
+  # installed; on Arch it stays inert and updates come through pacman.
+}