pentamassiv  filed an orphan request for opengrm-ngram :
The package has not been updated for years and has been flagged for 5 years now. A new version has been available for a long time. I contacted the current maintainer via mail and he replied saying that he no longer uses Arch :S
Request #28521 has been accepted automatically by the Arch User Repository package request system:
The package base has been flagged out-of-date since 2016-07-12.