mirror of
https://github.com/simplex-chat/haskell.nix.git
synced 2026-06-03 09:17:32 +00:00
Michael Peyton Jones
35 lines
1.3 KiB
Markdown
35 lines
1.3 KiB
Markdown
# Adding a new GHC version to haskell.nix
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## Update `overlays/bootstrap.nix`
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Each ghc version is defined in this file. Duplicate one of the existing
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ghc version definitions and replace the version numbers. Make sure
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you update the `spec.sha256` or the other versions source will be used.
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Check the LLVM version that should be used in the
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[ghc wiki](https://gitlab.haskell.org/ghc/ghc/-/wikis/commentary/compiler/backends/llvm/installing).
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## Update the list of cached GHC versions in `ci.nix`
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## Update [supported ghc versions](../reference/supported-ghc-versions.md) document
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## Add the materialized files
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In the haskell.nix repo run:
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```
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mkdir materialized/ghc884
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nix-build scripts/check-compiler-materialization --argstr compiler-nix-name ghc884
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```
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The `nix-build` command will fail with something like:
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```
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Materialized nix used for dummy-data-x86_64-unknown-linux-musl-ghc-8.10.1 incorrect. To fix run: /nix/store/wnwpyrhv4nxgyljz3f20gdpspjxvm7h4-updateMaterialized
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```
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Run the `updateMaterialized` script and repeat the `nix-build` until it no longer fails.
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If the failure is not a problem with materialization and no `updateMaterialized` script
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is provided then you may need to fix the failure another way or (if it only relates to
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one of the cross compilers) modify `scripts/check-compiler-materialization/default.nix`
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so that it skips that compiler.
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