Error message not colored when using ghcid -c "cabal new-repl --enable-multi-repl"

[yhuangsh]

Symptoms:

• running "cabal new-repl --enable-multi-repl" without ghcid -> console error/warning message not properly colored
• running ghcid -c "cabal new-repl --enable-multi-repl" -> error/warning message not colored
  • adding --color=always at ghcid level or --ghc_option=-fdiagnostics-color=always does not fix it
  • changing new-repl to replace does not fix it either
• running above without "--enable-multi-repl" -> error/message properly colored, but if there is error in one of the libs on which the final build target depends will terminate ghcid all together.
  • I tried with a simple project with one lib and one executable

My Environment:

• NixOS 24.11 stable
• sway + foot, $TERM=foot, tried prefixing TERM=xterm-256color, does not fix it
• ghcid with stack worked ok, I'm migrating from stack to cabal2nix, thus using cabal directly with ghcid