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mietek / haskell-on-heroku

Buildpack for deploying Haskell apps
BSD 3-Clause "New" or "Revised" License
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Support / use GHC 7.10 #54

Closed wereHamster closed 9 years ago

wereHamster commented 9 years ago

GHC 7.10 has been out for a while now.

mietek commented 9 years ago

Halcyon has supported GHC 7.10.1 since March (https://github.com/mietek/halcyon/commit/83eb6a260b286598f04dc962b534b8b9ac62c3e6), and GHC 7.10.1-rc2 since January (https://github.com/mietek/halcyon/commit/c9634862b1f3b8ff34b12d5191fc0848cf8a8d27).

Currently, the right version of GHC to use is implied by the base package constraint:

$ grep -E '^base-' .halcyon/constraints
base-4.7.0.2
wereHamster commented 9 years ago

I see. Absent any constraints it prefers 7.8 over 7.10. Is that intentional?

mietek commented 9 years ago

Yes. Absent any constraints, you can override the default by setting HALCYON_GHC_VERSION:

$ heroku config:set HALCYON_GHC_VERSION=7.10.1