Include llvm in image about docker-haskell HOT 10 OPEN

@benz0li thanks that great, i mentioned your repo as unofficial docker image here https://gitlab.haskell.org/ghc/ghc/-/wikis/building/preparation/linux

i will leave this open because i believe the official image should also either have llvm or provide the ability to install the latest llvm version that is supported by a specific GHC version

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for GHC 9.2.6 up to llvm 12 is supported. But debian buster only included up to llvm 11. So the docker OS versions don't match for the latest llvm version for the ghc version

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@flip111 You may be interested in my multi‑arch (linux/amd64, linux/arm64/v8) GHC musl docker images:

1. Multi‑arch: linux/amd64, linux/arm64/v8
2. Built using Hadrian¹, from source, without docs
3. Built using the LLVM backend
   • flavour: perf+llvm+split_sections

👉 See the Version Matrix to find out which version of LLVM is included in the image.

Based on Alpine Linux (that is musl libc and BusyBox) = Made to build statically linked executables

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GHC musl Dev Containers available, too.

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or provide the ability to install the latest llvm version that is supported by a specific GHC version

@flip111 IMHO the "Haskell Docker Official Images" are released according to the supported platforms.

For GHC 9.2.6 this is Debian 10. And the Debian 10 package repository serves LLVM versions 6, 7, 11 and 13.

My 'Alpine Linux'-based images only include a supported LLVM version – which does not have to be the latest¹.

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So the docker OS versions don't match for the right llvm version for the right ghc version

@flip111 It does. LLVM 11 is among the supported LLVM versions for GHC 9.2.6.

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the "Haskell Docker Official Images" are released according to the supported platforms.

Well not exactly in the url you linked you can see the following platforms supported: Alpine, Debian 10, Debian 9, Fedora 27, ubuntu 20.04, CentOS 7. Of those 7 distros only one has the official docker image buster.

My 'Alpine Linux'-based images only include a supported LLVM version – which does not have to be the latest.

I mean the latest supported version by GHC. Not the latest LLVM (19) version which would be incompatible with any GHC version at the moment.

It does. LLVM 11 is among the supported LLVM versions for GHC 9.2.6.

For 11 yes. Question is though why make a docker image for GHC based on an OS that does not support the same LLVM version as GHC, i'm talking about LLVM 12. You want to have the latest supported version for performance and LLVM bugs.

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Question is though why make a docker image for GHC based on an OS that does not support the same LLVM version as GHC

@flip111 Because for GHC 9.2.6 there is no binary distribution for Debian 11 (bullseye).

Addendum: If you want something unofficial, you have to build it yourself – from source.

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Because for GHC 9.2.6 there is no binary distribution for Debian 11 (bullseye).

@benz0li i appreciate you thinking along, but this doesn't make sense. Specifically choosing Debian for the docker container is a choice of for the docker container and not from the binary distribution. If we look at the release page for 9.2.4 there are more OS supported as i mentioned before. The docker image could be based on ubuntu for example which has LLVM 12 and is also supported by the binary release of 9.2.6.

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Specifically choosing Debian for the docker container is a choice of for the docker container and not from the binary distribution.

@flip111 You are correct.

So either

• ask the maintainer(s) to add Ubuntu-based images

or

• create a pull request that adds Ubuntu-based images

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