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[1 of 3] Processing p
[1 of 1] Compiling A[sig] ( p\A.hsig, nothing )
[2 of 3] Processing q
[1 of 1] Compiling A[sig] ( q\A.hsig, nothing )
[3 of 3] Processing r
[1 of 4] Compiling A[sig] ( r\A.hsig, nothing )
bkpfail04.bkp:7:9: error: [GHC-15843]
• Type constructor ‘A’ has conflicting definitions in the module
and its hsig file.
Main module: type A :: *
data A = A {foo :: Int}
Hsig file: type A :: *
data A = A {bar :: Bool}
The constructors do not match:
• The record label lists for ‘A’ differ.
• The types for ‘A’ differ.
• while merging the signatures from:
• p[A=<A>]:A
• q[A=<A>]:A
• ...and the local signature for A
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