scale_y_reverse and transformations does not reverse

Example

from plotnine import *
import pandas as pd

df = pd.DataFrame({
   'p': [0.1, 0.2, 0.3, 0.4, 0.5],
   'c': ['red','blue','lightblue','purple','green'],
   'x': ['x'] * 5
   
})
g = ggplot(df)
g += geom_point(aes('x','p', color='c'))
g += scale_color_identity()
g += scale_y_reverse(trans='log10')
g += ggtitle('scale_y_reverse')
g

Looks identical to scale_y_continuous:

[has2k1]

Solution is

+ coord_trans(y='reverse')

[has2k1]

The ggplot documentation has an unfortunate statement "Transformations only work with continuous values: "

It is an implementation detail, but one that may not change for a long time; by the time the coordinate transformations take place all values being being transformed are numeric. So you can probably apply any transform on “discrete” axes but they may not make much sense except for the reverse transform.