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[1 of 3] Processing p
[1 of 2] Compiling H[sig] ( p/H.hsig, nothing )
[2 of 2] Compiling M ( p/M.hs, nothing )
bkpfail25.bkp:8:18: warning: [GHC-06201] [-Wmissing-methods (in -Wdefault)]
• No explicit implementation for
‘fmap’
• In the instance declaration for ‘Functor T’
[2 of 3] Processing q
Instantiating q
[1 of 1] Compiling H ( q/H.hs, bkpfail25.out/q/H.o )
[3 of 3] Processing r
Instantiating r
[1 of 1] Including p[H=q:H]
Instantiating p[H=q:H]
[1 of 2] Compiling H[sig] ( p/H.hsig, bkpfail25.out/p/p-D5Mg3foBSCrDbQDKH4WGSG/H.o )
bkpfail25.bkp:13:9: error:
• Type constructor ‘T’ has conflicting definitions in the module
and its hsig file
Main module: type T :: * -> *
type T a = a
Hsig file: type role T nominal
type T :: * -> *
data T a
• while checking that q:H implements signature H in p[H=q:H]
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