Resolving dependencies...
Configuring java-adt-1.1...
Preprocessing executable 'java-adt' for java-adt-1.1..
Building executable 'java-adt' for java-adt-1.1..
[ 1 of 11] Compiling Paths_java_adt   ( dist/build/java-adt/autogen/Paths_java_adt.hs, dist/build/java-adt/java-adt-tmp/Paths_java_adt.o )
[ 2 of 11] Compiling String1          ( src/String1.hs, dist/build/java-adt/java-adt-tmp/String1.o )
[ 3 of 11] Compiling Pretty           ( src/Pretty.hs, dist/build/java-adt/java-adt-tmp/Pretty.o )
[ 4 of 11] Compiling Lexer            ( dist/build/java-adt/java-adt-tmp/Lexer.hs, dist/build/java-adt/java-adt-tmp/Lexer.o )

dist/build/java-adt/java-adt-tmp/Lexer.hs:771:25: error: [GHC-87543]
    Ambiguous occurrence fromString.
    It could refer to
       either String1.fromString,
              imported from String1 at src/Lexer.x:3:26-35
              (and originally defined at src/String1.hs:17:1-10),
           or GHC.Exts.fromString,
              imported from GHC.Exts at dist/build/java-adt/java-adt-tmp/Lexer.hs:20:1-15
              (and originally defined in Data.String).
    |
771 | alex_action_21 = TkId . fromString
    |                         ^^^^^^^^^^
[ 5 of 11] Compiling Syntax           ( src/Syntax.hs, dist/build/java-adt/java-adt-tmp/Syntax.o )
[ 7 of 11] Compiling Version          ( src/Version.hs, dist/build/java-adt/java-adt-tmp/Version.o )
[ 8 of 11] Compiling Options          ( src/Options.hs, dist/build/java-adt/java-adt-tmp/Options.o )
[ 9 of 11] Compiling Printer          ( src/Printer.hs, dist/build/java-adt/java-adt-tmp/Printer.o )
[10 of 11] Compiling Java17           ( src/Java17.hs, dist/build/java-adt/java-adt-tmp/Java17.o )
Failed to install java-adt-1.1
Error: cabal: Some packages failed to install:
java-adt-1.1-Di1WZaOPmYdLxr0mcdCTwT failed during the building phase. The
exception was:
ExitFailure 1