diff --git a/ghcid b/ghcid
new file mode 100755
index 0000000000000000000000000000000000000000..963a4026d9ffd837f31dbf623525e227fd89068d
--- /dev/null
+++ b/ghcid
@@ -0,0 +1 @@
+(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'"