fails to build with aeson-2.0

```
highjson >
highjson > /tmp/stack-251a96d31c6a6da7/highjson-0.5.0.0/src/Data/HighJson/Types.hs:127:37: error:
highjson > • Couldn't match expected type ‘Key’ with actual type ‘T.Text’
highjson > • In the first argument of ‘(.=)’, namely ‘so_jsonKey f’
highjson > In the expression: so_jsonKey f .= body
highjson > In an equation for ‘encoder’: encoder = so_jsonKey f .= body
highjson > |
highjson > 127 | encoder = so_jsonKey f .= body
highjson > | ^^^^^^^^^^^^
highjson >
highjson > /tmp/stack-251a96d31c6a6da7/highjson-0.5.0.0/src/Data/HighJson/Types.hs:128:28: error:
highjson > • Couldn't match type ‘T.Text’ with ‘Key’
highjson > Expected: Pair
highjson > Actual: (T.Text, Value)
highjson > • In the expression: pair
highjson > In the expression: [pair]
highjson > In the expression: ([pair], encoder)
highjson > |
highjson > 128 | in ([pair], encoder)
highjson > | ^^^^
highjson >
highjson > /tmp/stack-251a96d31c6a6da7/highjson-0.5.0.0/src/Data/HighJson/Types.hs:143:31: error:
highjson > • Couldn't match expected type ‘Key’ with actual type ‘T.Text’
highjson > • In the first argument of ‘(.=)’, namely ‘rf_jsonKey f’
highjson > In the expression: rf_jsonKey f .= rf_get f val
highjson > In an equation for ‘encoder’:
highjson > encoder = rf_jsonKey f .= rf_get f val
highjson > |
highjson > 143 | encoder = rf_jsonKey f .= rf_get f val
highjson > | ^^^^^^^^^^^^
highjson >
highjson > /tmp/stack-251a96d31c6a6da7/highjson-0.5.0.0/src/Data/HighJson/Types.hs:144:29: error:
highjson > • Couldn't match type ‘T.Text’ with ‘Key’
highjson > Expected: [Pair]
highjson > Actual: [(T.Text, Value)]
highjson > • In the expression: pair : ps
highjson > In the second argument of ‘loop’, namely
highjson > ‘(pair : ps, encoder <> encoding)’
highjson > In the expression: loop fs (pair : ps, encoder <> encoding)
highjson > |
highjson > 144 | in loop fs (pair : ps, encoder <> encoding)
highjson > | ^^^^^^^^^
highjson >
highjson > /tmp/stack-251a96d31c6a6da7/highjson-0.5.0.0/src/Data/HighJson/Types.hs:144:36: error:
highjson > • Couldn't match type ‘Key’ with ‘T.Text’
highjson > Expected: [(T.Text, Value)]
highjson > Actual: [Pair]
highjson > • In the second argument of ‘(:)’, namely ‘ps’
highjson > In the expression: pair : ps
highjson > In the second argument of ‘loop’, namely
highjson > ‘(pair : ps, encoder <> encoding)’
highjson > |
highjson > 144 | in loop fs (pair : ps, encoder <> encoding)
highjson > | ^^
highjson >
highjson > /tmp/stack-251a96d31c6a6da7/highjson-0.5.0.0/src/Data/HighJson/Types.hs:183:54: error:
highjson > • Couldn't match expected type ‘Key’ with actual type ‘T.Text’
highjson > • In the second argument of ‘(.:)’, namely ‘so_jsonKey o’
highjson > In the second argument of ‘($)’, namely ‘obj .: so_jsonKey o’
highjson > In the expression: fmap (so_prism o #) $ obj .: so_jsonKey o
highjson > |
highjson > 183 | fmap (so_prism o #) $ obj .: so_jsonKey o
highjson > | ^^^^^^^^^^^^
```