How to add hover tooltips to datashaded plot

HoloViews
1 
from bokeh.models import CustomJSHover

import pandas as pd
import hvplot.pandas
import panel as pn
import datashader as ds
import holoviews as hv
from holoviews.operation.datashader import rasterize, dynspread


def transform(df):
    if not len(df):
        return df
    return df.select_dtypes("number").mean(axis=0).to_frame().T

df = pd.DataFrame(
    {
        "lon": [-86.75, -86.75, -86.25, -86.25],
        "lat": [33.75, 34.0, 34.49, 34.5],
        "population": [100, 200, 300, 400],
        "R": ["A", "B", "A", "B"],
    }
)


highlighter = hd.inspect_points.instance(
    streams=[hv.streams.PointerXY], transform=transform
)

p = dynspread(
    datashade(
        hv.Points(df, vdims=["population", "R"]),
        aggregator=ds.max("population"),
    )
)

highlighter(p).opts(
    color="red", tools=["hover"], marker="square", size=10, fill_alpha=0
) * p

image