-- | Environment variable used to indicate stack is running in container.
-- although we already have STACK_IN_NIX_EXTRA_ARGS that is set in the same conditions,
-- it can happen that STACK_IN_NIX_EXTRA_ARGS is set to empty.
inNixShellEnvVar :: String
inNixShellEnvVar = map toUpper stackProgName ++ "_IN_NIXSHELL"
inNixShellEnvVar :: String
inNixShellEnvVar = map toUpper stackProgName ++ "_IN_NIXSHELL"
inNixShellEnvVar = map toUpper stackProgName ++ "_IN_NIXSHELL"