A new version of hashable isn't compitable with our ghcjs. A max bound version is needed in the Cabal file

akhesaCaro · akhesaCaro · commit a4aacc947514 · 2021-10-02T13:32:15.000+02:00
diff --git a/cabal.ghcjs.project b/cabal.ghcjs.project
@@ -7,3 +7,5 @@ packages:
 -- we need to tell cabal we are using GHCJS
 compiler: ghcjs
 tests: True
+
+constraints: hashable <=1.3.3.0
