arch-package: set pkgver before makepkg

.github/workflows/arch-package.yml

@@ -26,6 +26,8 @@ jobs:
           echo "nobody ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers
           chown nobody:nobody pkgbuild
           cd pkgbuild
+          pkgver=$(git describe --tags | sed -r 's/^v//;s/([^-]*-g)/r\1/;s/-/./g')
+          sed -i "s/pkgver=.*/pkgver=$pkgver/g" PKGBUILD
           sudo -u nobody -- sh -c "makepkg -fsiCc --noconfirm"
       - name: Edit release and add files
         env: