- compilation time
I modify a single line, in a single file, and the scala system takes 2-3 minutes to recompile at work. Apparently it spends over a minute inferring types!
Hello! The types are EXACTLY THE SAME AS ALWAYS. Please cache the whole typing phase as a build artifact based on file/directory hashes. Maybe even make this cache source-control-safe.
We used what I would call the package object predef pattern, which basically involved, rolling your own predef to have certain functions / extension classess / objects always in scope through package objects added to each sub-project. And the build would cross-compile both jvm scala and scalajs. It would not take more than a second or two unless one of those predef files were touched (which would fire off effectively a full rebuild).
Out of curiosity, how many hours do you think it would take to get the compile time down? I wonder if we could find somebody to help us with that.
In every project I've been are some former Eclipse users that are accustomed to collapsing all imports and adding new ones automatically. They never look at their ever growing list of unused files that are searched, loaded, and parsed.
Are you guys currently using SBT? If so, is incremental compilation not working for some reason (or are you not aware of it?).
In terms of time, it would really depend on the size of the project and what is currently in place. It could be a couple of hours to a few days.
BTW my email is in my hn profile you want to discuss more privately.
Incremental compile times should be seconds not minutes, something is probably wrong with your setup.