gnugrep 3.7 -> 3.9 https://repology.org/metapackage/gnugrep/versions
attrpath: gnugrep
Checking auto update branch...
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There might already be an open PR for this update:
- powerpc64*: use --with-long-double-format=ieee
  URL "https://api.github.com/repos/NixOS/nixpkgs/issues/170215"