Running nixpkgs-update (https://nix-community.org/update-bot/) with UPDATE_INFO: coq_8_7 8.7.2 -> 9.1.1 https://github.com/coq/coq/releases
attrpath: coq_8_7
Checking auto update branch...
No auto update branch exists
Version in attr path coq_8_7 not compatible with 9.1.1