haskellPackages.libiserv_9_6_3 9.6.3 -> 9.6.6 https://repology.org/project/haskell:libiserv/versions attrpath: haskellPackages.libiserv_9_6_3 Checking auto update branch... No auto update branch exists Version in attr path haskellPackages.libiserv_9_6_3 not compatible with 9.6.6