FoldableInstance9.out

Error found:
in module [33mFoldableInstance9[0m
at tests/purs/failing/FoldableInstance9.purs:53:1 - 53:38 (line 53, column 1 - line 53, column 38)

  One or more type variables are in positions that prevent [33mFoldable[0m from being derived.
  To derive this class, make sure that these variables are only used as the final arguments to type constructors, and that those type constructors themselves have instances of [33mFoldable[0m.

  tests/purs/failing/FoldableInstance9.purs:
  [90m   15[0m [33mdata Test f g h a[0m
  [90m   16[0m [33m  = Test1 (f [7ma[27m [7ma[27m a) (f Int [7ma[27m a) (f [7ma[27m [7ma[27m Int) (f Int [7ma[27m Int) (f Int Int Int)[0m
  [90m   17[0m [33m  | Test2 { all :: f [7ma[27m [7ma[27m a[0m
  [90m   18[0m [33m          , rights :: f Int [7ma[27m a[0m
  [90m   19[0m [33m          , lefts :: f [7ma[27m [7ma[27m Int[0m
  [90m   20[0m [33m          , middle :: f Int [7ma[27m Int[0m
  [90m   21[0m [33m          , none :: f Int Int Int[0m
  [90m   22[0m [33m          }[0m
  [90m   23[0m [33m  | Test3 (g[0m
  [90m   24[0m [33m            { all :: f [7ma[27m [7ma[27m [7ma[27m[0m
  [90m   25[0m [33m            , rights :: f Int [7ma[27m [7ma[27m[0m
  [90m   26[0m [33m            , lefts :: f [7ma[27m [7ma[27m Int[0m
  [90m   27[0m [33m            , middle :: f Int [7ma[27m Int[0m
  [90m   28[0m [33m            , none :: f Int Int Int[0m
  [90m  ...[0m
  [90m   32[0m [33m            { nested1 ::[0m
  [90m   33[0m [33m                { all :: f [7ma[27m [7ma[27m [7ma[27m[0m
  [90m   34[0m [33m                , rights :: f Int [7ma[27m [7ma[27m[0m
  [90m   35[0m [33m                , lefts :: f [7ma[27m [7ma[27m Int[0m
  [90m   36[0m [33m                , middle :: f Int [7ma[27m Int[0m
  [90m   37[0m [33m                , none :: f Int Int Int[0m
  [90m  ...[0m
  [90m   40[0m [33m                g[0m
  [90m   41[0m [33m                  { all :: f [7ma[27m [7ma[27m [7ma[27m[0m
  [90m   42[0m [33m                  , rights :: f Int [7ma[27m [7ma[27m[0m
  [90m   43[0m [33m                  , lefts :: f [7ma[27m [7ma[27m Int[0m
  [90m   44[0m [33m                  , middle :: f Int [7ma[27m Int[0m
  [90m   45[0m [33m                  , none :: f Int Int Int[0m
  [90m   46[0m [33m                  }[0m
  [90m   47[0m [33m                  [7ma[27m[0m
  [90m   48[0m [33m            }[0m
  [90m   49[0m [33m            a)[0m
  [90m   50[0m [33m  | Test5 (Rec f [7ma[27m)[0m
  [90m   51[0m [33m  | Test6 (g (Rec f [7ma[27m) a)[0m
  [90m   52[0m [33m  | Test7 (h { nested1 :: Rec f [7ma[27m, nested2 :: g (Rec f [7ma[27m) [7ma[27m } a)[0m
  [90m   53[0m [33mderive instance Foldable (Test f g h)[0m


See https://github.com/purescript/documentation/blob/master/errors/CannotDeriveInvalidConstructorArg.md for more information,
or to contribute content related to this error.