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DanielG / ghc-mod

Happy Haskell Hacking for editors. DEPRECATED
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ghc-mod regenerates dist/setup-config.ghc-mod.resolved-components #568

Open alanz opened 9 years ago

alanz commented 9 years ago

Every time I save a file or open a new one, it takes a long time and the timestamp on dist/setup-config.ghc-mod.resolved-components becomes the current time.

I suspect the cache is being rebuilt each time.

Using ghc-mod at https://github.com/kazu-yamamoto/ghc-mod/commit/c5db06af0fea8044757b7b563c0e7ef9de2fe6c6

DanielG commented 9 years ago

The cache should only be rebuilt starting from the file you modified so that shouldn't take toooo long. How big is the module graph cache file? Maybe actually writing it out to disk is taking too long.

alanz commented 9 years ago

The module graph cache file is 62Kb. The problem is that it then shows in the message bar that it is loading all the dependencies, which in this case includes the GHC API and this is what takes all the time.

On Wed, Aug 26, 2015 at 4:50 AM, Daniel Gröber notifications@github.com wrote:

The cache should only be rebuilt starting from the file you modified so that shouldn't take toooo long. How big is the module graph cache file? Maybe actually writing it out to disk is taking too long.

— Reply to this email directly or view it on GitHub https://github.com/kazu-yamamoto/ghc-mod/issues/568#issuecomment-134800788 .