feat: handling symlinks

Author: samrose

nix/ext/pg_cron.nix

@@ -117,21 +117,24 @@ stdenv.mkDerivation {
     NIX_PROFILE="/var/lib/postgresql/.nix-profile"
     
     # Follow the complete chain of symlinks to find the multi-version directory
-    CURRENT_LINK="$NIX_PROFILE/lib/pg_cron-$VERSION.so"
+    CURRENT_LINK="$NIX_PROFILE/lib/pg_cron-$VERSION${postgresql.dlSuffix}"
     echo "Starting with link: $CURRENT_LINK"
     
-    while [ -L "$CURRENT_LINK" ]; do
-        NEXT_LINK=$(readlink "$CURRENT_LINK")
-        echo "Following link: $NEXT_LINK"
-        if echo "$NEXT_LINK" | grep -q '^/'; then
-            CURRENT_LINK="$NEXT_LINK"
-        else
-            CURRENT_LINK="$(dirname "$CURRENT_LINK")/$NEXT_LINK"
+    # Follow first two symlinks to get to the multi-version directory
+    for i in 1 2; do
+        if [ -L "$CURRENT_LINK" ]; then
+            NEXT_LINK=$(readlink "$CURRENT_LINK")
+            echo "Following link: $NEXT_LINK"
+            if echo "$NEXT_LINK" | grep -q '^/'; then
+                CURRENT_LINK="$NEXT_LINK"
+            else
+                CURRENT_LINK="$(dirname "$CURRENT_LINK")/$NEXT_LINK"
+            fi
+            echo "Current link is now: $CURRENT_LINK"
         fi
-        echo "Current link is now: $CURRENT_LINK"
     done
     
-    # The final link should be in the multi-version directory
+    # The multi-version directory should be the parent of the current link
     MULTI_VERSION_DIR=$(dirname "$CURRENT_LINK")
     echo "Found multi-version directory: $MULTI_VERSION_DIR"
     LIB_DIR="$MULTI_VERSION_DIR"