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Re: How to make sure ghc uses installed packages?
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From: |
John Soo |
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Subject: |
Re: How to make sure ghc uses installed packages? |
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Date: |
Tue, 17 Sep 2019 14:09:36 +0000 |
Hi Jesse,
> Why did ghc-random and ghc-regex-compat only work with ghc 8.4.3?
RIght now, most - if not all - ghc packages are built with ghc@8.4.3. GHC
will check the version it was compiled with and refuse to compile if there
is a mismatch between the object file and your project.
Now that I say that, I am not sure I am right. I get version mismatches
compiling xmonad, for instance, when i upgrade ghc to 8.6.
It would be really nice to get more packages up to 8.6. One solution might
be to use a channel with package definitions using your preferred version
of ghc.
One other problem I can think of is that the current ghc is 8.6 but most
ghc-* packages are built with 8.4 so most packages are incompatible with
the default.
- John