Small fixes

- Installation now copies the whole directory (will separately update PKGBUILD)
- A fix to rollback

Part of Issue #32

scripts/install-to-dest.sh

@@ -27,11 +27,16 @@ cd $MY_PATH/..
 readonly PKGNAME=yabsnap
 
 # This mirrors PKGBUILD with slight modifications.
+pushd src/
+tar -cf - \
+  $(find -type f -not -name "*_test.py" \( -name "*.py" -o -name "*.conf" \)) |
+  tar -xf - -C "$PKGDIR"/usr/share/"$PKGNAME"/
+pushd "$PKGDIR"/usr/share/"$PKGNAME"/
+chown -R root:root .
+chmod -R u=rwX,go=rX .
+popd
+popd
 
-for file in $(ls -A src/code/*.{py,conf} | grep -v "_test.py")
-do
-  install -Dm 644 "$file" "$PKGDIR"/usr/share/"$PKGNAME"/code/"${file##*/}"
-done
 cd artifacts
 install -Dm 644 services/"$PKGNAME".{service,timer}      -t "$PKGDIR"/usr/lib/systemd/system/
 install -Dm 664 pacman/*.hook     -t "$PKGDIR"/usr/share/libalpm/hooks/

src/code/rollbacker.py

@@ -12,6 +12,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import collections
+
 from . import configs
 from . import snap_operator
 from .mechanisms import snap_mechanisms
@@ -20,20 +22,14 @@
 
 
 def rollback(configs_iter: Iterable[configs.Config], path_suffix: str):
-    source_dests: list[tuple[str, str]] = []
+    source_dests_by_snaptype: dict[snap_mechanisms.SnapType, list[tuple[str, str]]] = (
+        collections.defaultdict(list)
+    )
     for config in configs_iter:
         snap = snap_operator.find_target(config, path_suffix)
         if snap:
-            if snap.metadata.snap_type == snap_mechanisms.SnapType.BTRFS:
-                source_dests.append((snap.metadata.source, snap.target))
-            else:
-                raise RuntimeError(
-                    f"Cannot rollback snap of type {snap.metadata.snap_type} yet"
-                )
-    print("\n".join(_rollback_btrfs_snapshots(source_dests)))
-
-
-def _rollback_btrfs_snapshots(source_dests: list[tuple[str, str]]) -> list[str]:
-    return snap_mechanisms.get(snap_mechanisms.SnapType.BTRFS).rollback_gen(
-        source_dests
-    )
+            source_dests_by_snaptype[config.snap_type].append(
+                (snap.metadata.source, snap.target)
+            )
+    for snap_type, source_dests in sorted(source_dests_by_snaptype.items()):
+        print("\n".join(snap_mechanisms.get(snap_type).rollback_gen(source_dests)))