deployment and stack names must conform to cloudformation validation rules

[adlaika]

main = deployment "cloud.seeder.simple.example" $ do
  flag "BucketName"
  flag "BucketName2"
  stack_ "bucket"

provisioning the above results in:

ServiceError (ServiceError' {_serviceAbbrev = Abbrev "CloudFormation", _serviceStatus = Status {statusCode = 400, statusMessage = "Bad Request"}, _serviceHeaders = [("x-amzn-RequestId","0d42c11c-fda1-11e7-9771-0917a7b815d8"),("Content-Type","text/xml"),("Content-Length","471"),("Date","Sat, 20 Jan 2018 05:16:20 GMT"),("Connection","close")], _serviceCode = ErrorCode "ValidationError", _serviceMessage = Just (ErrorMessage "1 validation error detected: Value 'test-cloud.seeder.simple.example-bucket' at 'stackName' failed to satisfy constraint: Member must satisfy regular expression pattern: [a-zA-Z][-a-zA-Z0-9]*|arn:[-a-zA-Z0-9:/._+]*"), _serviceRequestId = Just (RequestId "0d42c11c-fda1-11e7-9771-0917a7b815d8")})

[adlaika]

similar issue:

./config.hs provision bucket --BucketName asdfggsagddddddddddddddddd

(that is, forgetting to put in the environment such that it is passed in as --BucketName asdfggsagddddddddddddddddd)
results in:

config.hs: ServiceError (ServiceError' {_serviceAbbrev = Abbrev "CloudFormation", _serviceStatus = Status {statusCode = 400, statusMessage = "Bad Request"}, _serviceHeaders = [("x-amzn-RequestId","83eb9dee-ffcb-11e7-b598-f751a683a3fd"),("Content-Type","text/xml"),("Content-Length","472"),("Date","Mon, 22 Jan 2018 23:25:21 GMT"),("Connection","close")], _serviceCode = ErrorCode "ValidationError", _serviceMessage = Just (ErrorMessage "1 validation error detected: Value '--BucketName-cloud-seeder-example-bucket' at 'stackName' failed to satisfy constraint: Member must satisfy regular expression pattern: [a-zA-Z][-a-zA-Z0-9]*|arn:[-a-zA-Z0-9:/._+]*"), _serviceRequestId = Just (RequestId "83eb9dee-ffcb-11e7-b598-f751a683a3fd")})