Improve ghcid script

Co-authored-by: Jan Beinke <git@janbeinke.com>

ghcid

-(git ls-files app; git ls-files test; git ls-files '*.cabal') | entr -r nix develop -c ghcid --warnings "--command=cabal repl lib:quasar" "--test=:! cabal test --test-show-details=direct --ghc-option -fdiagnostics-color=always && cabal build --ghc-option -fdiagnostics-color=always && zsh -c 'print -P %F{green}build and tests passed%f'"
+#!/usr/bin/env zsh
+
+(git ls-files test; git ls-files '*.cabal'; git ls-files 'flake.*') | \
+  entr -r \
+    nix develop -c \
+      ghcid \
+        --warnings \
+        "--command=cabal repl lib:quasar" \
+        "--test=:! \
+          zsh -c 'print -P %F{yellow}Cleaning repository%f' && \
+          cabal clean && \
+          cabal test --test-show-details=direct --ghc-option -fdiagnostics-color=always && \
+          cabal build --ghc-option -fdiagnostics-color=always && \
+          zsh -c 'print -P %F{green}Build and tests passed%f' \
+        "