upgrade only the related installed packages

debian/install

@@ -1,2 +1,3 @@
 ubports-qa /usr/bin
+pkginstall /usr/bin
 ubports-qa_completion /etc/bash_completion.d

pkginstall

@@ -0,0 +1,17 @@
+#!/bin/bash
+branch=$1
+arch=$(dpkg --print-architecture)
+
+case "${branch}" in
+	"xenial"*) repo="repo.ubports.com";;
+	*) repo="repo2.ubports.com";;
+esac
+
+readarray -t pkgs < <(awk '/Package/{print $2}' /var/lib/apt/lists/${repo}_dists_${branch//_/%5f}_main_binary-${arch}_Packages|uniq)
+relpkgs=()
+for pkg in "${pkgs[@]}"
+do
+	status=$(apt-cache policy $pkg|awk '/Installed/{print $2}')
+	[ "$status" != "(none)" ] && relpkgs=${relpkgs}" "${pkg}
+done
+apt install $relpkgs

ubports-qa

@@ -91,10 +91,10 @@ def apt_upgrade():
     except subprocess.CalledProcessError:
         LOG.error("Failed to run 'apt full-upgrade'. See the output above for details.")
 
-def apt_install(package)
+def apt_install(repository_name):
     LOG.debug("upgrading package")
     try:
-        subprocess.run(["apt", "install", package], check=True)
+        subprocess.run(["pkginstall", repository_name], check=True)
     except subprocess.CalledProcessError:
         LOG.error("Failed to install Package")
 
@@ -227,7 +227,7 @@ def install_command(args):
         add_list(repository_name)
         add_pref(repository_name)
         apt_update()
-        apt_install(args.repo)
+        apt_install(repository_name)
 
     LOG.info(
         "You can remove this repository by running 'sudo ubports-qa remove {}'".format(