coverage: replace source absolute path with '.'

flake.nix

@@ -85,6 +85,7 @@
           rclone
           redis
           restic
+          sonar-scanner-cli
           self.packages.${system}.pytest-vm
           # FIXME consider loading this explicitly only after ArchLinux issue is solved
           self.checks.x86_64-linux.default.driverInteractive
@@ -151,6 +152,7 @@
               start_all()
               machine.succeed("cd ${vmtest-src-dir} && coverage run --data-file=/tmp/.coverage -m pytest -p no:cacheprovider -v >&2")
               machine.succeed("cd ${vmtest-src-dir} && coverage xml --data-file=/tmp/.coverage -o /tmp/coverage.xml >&2")
+              machine.succeed("sed 's/<source>${pkgs.lib.strings.escapeShellArg self.outPath}<\/source>/<source>.<\/source>/g' /tmp/coverage.xml")
               machine.copy_from_vm("/tmp/coverage.xml", ".")
               machine.succeed("coverage report --rcfile=.coveragerc --data-file=/tmp/.coverage >&2")
             '';