hlint annotation triggers TH, loads all transitive imports and eats up memory

[divipp]

Consider module X with no definition:

module X where

import A

{-# ANN module ("HLint: ignore Use camelCase" :: String) #-}

Somehow the hlint annotation triggers

Linking Template Haskell ( ... )  -- transitive dependencies of A

This in turn eats up memory and we observe

hPutBuf: illegal operation (handle is closed)

This bites us in our project so we are going to remove hlint annotations as a workaround.

[luite]

does "eat up memory" mean "uses a lot of memory" or does it continue to allocate more until the process gets killed? (in other words: does it work on systems with lots of available memory?)

[fisx]

i think we don't know. (-:

what would be a good way to increase memory to find out?

[fisx]

i also tried here: https://stackoverflow.com/questions/45810878/increase-memory-for-node-as-called-by-ghcjs

[fisx]

this is starting to happen more and more often on our ci. is it likely that upgrading to lts-9.1 will help, like suggested in #579 (comment)?

[luite]

Has eb8670c resolved the hPutBuf: illegal operation (handle is closed) error?

[fisx]

see #588 (comment)

[fisx]

It looks like eb8670c solves our problem. Thanks again!