DerivingVia is not allowed in Safe Haskell

[kakkun61]

My package depends on the category package and cabal v2-test produced this:

…
Build profile: -w ghc-9.2.1 -O1
…
Building library for util-0.1.17.1..

on the commandline: warning:
    -XDerivingVia is not allowed in Safe Haskell; ignoring -XDerivingVia
…
Util.hs:122:49: error:
    Illegal deriving strategy: via
    Use DerivingVia to enable this extension
    |
122 |   deriving (Eq, Ord, Read, Show, Bounded, Enum) via p a
    |                                                 ^^^^^^^

[kakkun61]

Workaround is to add this snippet to cabal.project etc.:

# cabal.project

package util
  ghc-options: -fno-safe-haskell

package alg
  ghc-options: -fno-safe-haskell

package category
  ghc-options: -fno-safe-haskell