gistfile1.txt

$ bin/panda install Sum
==> Fetching Sum
==> Building Sum
Compiling lib/Sum.pm6
Compiling lib/Sum/Adler.pm6
===SORRY!===
Method 'content' not found for invocant of class 'Any'
Mu()
build stage failed for Sum: Failed building lib/Sum/Adler.pm6
  in block  at lib/Panda/Builder.pm:53
  in sub withp6lib at lib/Panda/Common.pm:31
  in method build at lib/Panda/Builder.pm:45
  in method build-helper at lib/Pies.pm:50
  in method resolve-helper at lib/Pies.pm:85
  in method resolve at lib/Pies.pm:98
  in any call_with_capture at src/gen/Metamodel.pm:2765
  in block  at src/gen/CORE.setting:489
  in method resolve at lib/Panda.pm:84
  in block  at bin/panda:113
  in method reify at src/gen/CORE.setting:5282
  in method reify at src/gen/CORE.setting:5184
  in method reify at src/gen/CORE.setting:5184
  in method gimme at src/gen/CORE.setting:5562
  in method eager at src/gen/CORE.setting:5541
  in method eager at src/gen/CORE.setting:1140
  in sub eager at src/gen/CORE.setting:5840
  in sub MAIN at bin/panda:110
  in block  at bin/panda:106