• using R version 3.6.2 (2019-12-12)
• using platform: x86_64-apple-darwin15.6.0 (64-bit)
• using session charset: UTF-8
• checking for file ‘microbial/DESCRIPTION’ ... OK
• checking extension type ... Package
• this is package ‘microbial’ version ‘0.0.19’
• package encoding: UTF-8
• checking package namespace information ... OK
• checking package dependencies ... ERROR
  Packages required but not available: 'dada2', 'DECIPHER'
  
  See section ‘The DESCRIPTION file’ in the ‘Writing R Extensions’
  manual.
• DONE
  Status: 1 ERROR