Merge pull request #268502 from alois31/polkit-rsync

polkit: remove build-dependency on rsync

pkgs/development/libraries/polkit/default.nix

···
 , mesonEmulatorHook
 , ninja
 , perl
-, rsync
 , python3
 , fetchpatch
 , gettext
···
     meson
     ninja
     perl
-    rsync
 
     # man pages
     libxslt
···
   # at install time but Meson does not support this
   # so we need to convince it to install all files to a temporary
   # location using DESTDIR and then move it to proper one in postInstall.
-  DESTDIR = "${placeholder "out"}/dest";
+  env.DESTDIR = "dest";
 
   inherit doCheck;
 
···
 
   postInstall = ''
     # Move stuff from DESTDIR to proper location.
-    # We use rsync to merge the directories.
-    rsync --archive "${DESTDIR}/etc" "$out"
-    rm --recursive "${DESTDIR}/etc"
-    rsync --archive "${DESTDIR}${system}"/* "$out"
-    rm --recursive "${DESTDIR}${system}"/*
-    rmdir --parents --ignore-fail-on-non-empty "${DESTDIR}${system}"
+    # We need to be careful with the ordering to merge without conflicts.
     for o in $(getAllOutputNames); do
-        rsync --archive "${DESTDIR}/''${!o}" "$(dirname "''${!o}")"
-        rm --recursive "${DESTDIR}/''${!o}"
+        mv "$DESTDIR/''${!o}" "''${!o}"
     done
-    # Ensure the DESTDIR is removed.
-    destdirContainer="$(dirname "${DESTDIR}")"
-    pushd "$destdirContainer"; rmdir --parents "''${DESTDIR##$destdirContainer/}${builtins.storeDir}"; popd
+    mv "$DESTDIR/etc" "$out"
+    mv "$DESTDIR${system}/share"/* "$out/share"
+    # Ensure we did not forget to install anything.
+    rmdir --parents --ignore-fail-on-non-empty "$DESTDIR${builtins.storeDir}" "$DESTDIR${system}/share"
+    ! test -e "$DESTDIR"
   '';
 
   meta = with lib; {