This is a linter package to lint puppet files using the puppet parser validate command.
$ apm install linter(if you don't have already).
$ apm install linter-puppet
(Optional) You can configure the settings by editing ~/.atom/config.cson:
'linter-puppet': 'puppetExecutablePath': null # puppet path. run 'which puppet' to find the path
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.