fix: don't try to push missing store paths

Author: Defelo

.github/workflows/review.yml

@@ -108,9 +108,11 @@ jobs:
         run: |
           set -ex
           attic=$(nix build --no-link --print-out-paths github:nixos/nixpkgs/nixos-unstable#attic-client)/bin/attic
+          realpath=$(nix build --no-link --print-out-paths github:nixos/nixpkgs/nixos-unstable#coreutils)/bin/realpath
           $attic login default "$ATTIC_SERVER" "$ATTIC_TOKEN"
           $attic cache info "$ATTIC_CACHE"
-          $attic push "$ATTIC_CACHE" ~/.cache/nixpkgs-review/pr-${{ inputs.pr }}/results/*
+          ($realpath -qe ~/.cache/nixpkgs-review/pr-${{ inputs.pr }}/results/* || true) > paths
+          $attic push --stdin "$ATTIC_CACHE" < paths
           info=$(curl -f -H "Authorization: Bearer ${ATTIC_TOKEN}" "${ATTIC_SERVER}_api/v1/cache-config/${ATTIC_CACHE}")
           substituter_endpoint=$(jq -r .substituter_endpoint <<< "$info")
           public_key=$(jq -r .public_key <<< "$info")
@@ -122,9 +124,9 @@ jobs:
           echo "  $public_key" >> fetch_cmd
           echo -n "  '" >> fetch_cmd
           ok=0
-          for p in ~/.cache/nixpkgs-review/pr-${{ inputs.pr }}/results/*; do
+          for p in $(cat paths); do
             echo -e " \\" >> fetch_cmd
-            echo -n "  $(realpath $p)" >> fetch_cmd
+            echo -n "  $p" >> fetch_cmd
             ok=1
           done
           [[ "$is_public" = "true" ]] && [[ $ok = 1 ]] || rm fetch_cmd