[590 built (1 failed), 732 copied (3561.5 MiB), 1160.6 MiB DL]
error: build of '/nix/store/1rkxdx6srphizk26b36mgszkr0kn2hzc-env.drv' failed
https://github.com/NixOS/nixpkgs/pull/71929
3 package are marked as broken and were skipped:
backintime backintime-qt4 foo-yc20

1 package failed to build:
python37Packages.optuna

543 package were build:
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