diff --git a/bin/nix-build-and-cache b/bin/nix-build-and-cache
index 3810cd19..c0969a24 100755
--- a/bin/nix-build-and-cache
+++ b/bin/nix-build-and-cache
@@ -10,14 +10,6 @@ just() {
         nix build "$@"
     fi
 
-    if [ -z ${ATTIC_TOKEN+x} ]; then
-        echo "\$ATTIC_TOKEN is unset, skipping uploading to the binary cache"
-        return
-    fi
-
-    nix run --inputs-from . attic#default -- \
-        login "$ATTIC_SERVER" "$ATTIC_ENDPOINT" "$ATTIC_TOKEN"
-
     # Find all output paths of the installables and their build dependencies
     readarray -t derivations < <(nix path-info --derivation "$@")
     readarray -t cache < <(
@@ -26,6 +18,14 @@ just() {
             <<< "${derivations[*]}"
     )
 
+    if [ -z ${ATTIC_TOKEN+x} ]; then
+        echo "\$ATTIC_TOKEN is unset, skipping uploading to the binary cache"
+        return
+    fi
+
+    nix run --inputs-from . attic#default -- \
+        login "$ATTIC_SERVER" "$ATTIC_ENDPOINT" "$ATTIC_TOKEN"
+
     # Upload them to Attic. It seems to insist on newlines to separate the
     # paths.
     (