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Update HACKING.md

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Julian Ospald 2021-01-02 16:07:41 +08:00
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@ -52,8 +52,19 @@ organised tree-ish in `GHCup.Utils` and `GHCup.Utils.*`.
Anything dealing with ghcup specific directories is in
`GHCup.Utils.Dirs`.
Download information on where to fetch bindists from is in
`GHCup.Data.GHCupDownloads`.
Download information on where to fetch bindists from is in the appropriate
yaml files: `ghcup-<yaml-ver>.yaml`.
## Common Tasks
### Adding a new GHC version
1. open the latest `ghcup-<yaml-ver>.yaml`
2. find the latest ghc version (in yaml tree e.g. `ghcupDownloads -> GHC -> 8.10.3`)
3. copy-paste it
4. adjust the version, tags, changelog, source url
5. adjust the various bindist urls (make sure to also change the yaml anchors)
6. run `cabal run exe:ghcup-gen -- check-tarballs -f ghcup-<yaml-ver>.yaml -u 'ghc-8\.10\.4'`
## Major refactors