> Leo Famulari <leo@famulari.name> skribis:
>
>  ("arcgis-data"
>   ;; See 'getmap.sh' in the viz1090 source distribution.
>   ,(origin
>      (method url-fetch)
>      (uri
>        "https://opendata.arcgis.com/datasets/4d8fa46181aa470d809776c57a8ab1f6_0.zip")
>      (sha256
>       (base32
>        "1aqa7dc3xp1mcz7zm3v5m2qjdkzgyzgzlif4cvqsba2l2flc3v74"))))

When I downloaded this file, I got a different hash
(1327vq7k5rw8b7fc1765w33k01zc84r2cnn5wv7b6pm0i5yg8zw1).
So I guess this URL is not stable.