T1789.hs:6:1: warning: [GHC-16029] [-Wmissing-import-lists]
    The module ‘Prelude’ does not have an explicit import list

T1789.hs:7:1: warning: [GHC-16029] [-Wmissing-import-lists]
    The module ‘Data.Map’ does not have an explicit import list

T1789.hs:9:20: warning: [GHC-77037] [-Wmissing-import-lists]
    The import item ‘Maybe(..)’ does not have an explicit import list

T1789.hs:10:1: warning: [GHC-16029] [-Wmissing-import-lists]
    The module ‘Data.Maybe’ does not have an explicit import list