Error: Invalid Pragma
`$ nimble install -y norm                                                                                                                                                                                                                                                                     [14:28:20]
   Warning: Using project local deps mode
Downloading https://github.com/moigagoo/norm using git
  Verifying dependencies for norm@2.3.0
 Installing ndb@>= 0.19.9
Downloading https://github.com/xzfc/ndb.nim using git
  Verifying dependencies for ndb@0.19.9
 Installing ndb@0.19.9
   Success: ndb installed successfully.
 Installing norm@2.3.0
   Success: norm installed successfully.
aaronm:projects/ (stage*) $ inim -d:normDebug                                                                                                                                                                                                                                                                          [14:28:36]
👑 INim 0.6.1
Nim Compiler Version 1.4.8 [MacOSX: amd64] at /User/.nimble/bin/nim
nim> import norm/model
nim> type
....     User = ref object of Model
....       email: string
....       name {.unique.}: string
Error: invalid pragma: unique
'