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author | hyperfekt <git@hyperfekt.net> | 2020-05-04 01:01:57 +0200 |
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committer | Malte Brandy <malte.brandy@maralorn.de> | 2021-05-01 21:55:18 +0200 |
commit | f3f84855e8fa9b190a14f49c5c6db9e816e72c10 (patch) | |
tree | dbdded4995b914d883b9ff546f3c1d31cce8e145 /maintainers/scripts/haskell/regenerate-hackage-packages.sh | |
parent | ee30de13b7730342a2bfe720c5877b6abf361172 (diff) | |
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maintainers/scripts/haskell/regenerate-hackage-packages.sh: init
Introduces a script that can be used to update the Nix expressions for the Haskell package set. In service of that, also - introduces cabal2nix-latest, which pins the hackage2nix version used - changes all-cabal-hashes to use fetchFromGitHub - adds update-hackage.sh & update-cabal2nix-latest.sh & update-stackage.sh maintainer scripts
Diffstat (limited to 'maintainers/scripts/haskell/regenerate-hackage-packages.sh')
-rwxr-xr-x | maintainers/scripts/haskell/regenerate-hackage-packages.sh | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/maintainers/scripts/haskell/regenerate-hackage-packages.sh b/maintainers/scripts/haskell/regenerate-hackage-packages.sh new file mode 100755 index 00000000000..79b93f5b7cb --- /dev/null +++ b/maintainers/scripts/haskell/regenerate-hackage-packages.sh @@ -0,0 +1,20 @@ +#! /usr/bin/env nix-shell +#! nix-shell -i bash -p coreutils haskellPackages.cabal2nix-latest -I nixpkgs=. + +# This script is used to regenerate nixpkgs' Haskell package set, using a tool +# called hackage2nix. hackage2nix looks at +# pkgs/development/haskell-modules/configuration-hackage2nix.yaml and generates +# a Nix expression for package version specified there, using the Cabal files +# from the Hackage database (available under all-cabal-hashes) and its +# companion tool cabal2nix. +# +# Related scripts are update-hackage.sh, for updating the snapshot of the +# Hackage database used by hackage2nix, and update-cabal2nix-latest.sh, +# for updating the version of hackage2nix used to perform this task. + +set -euo pipefail + +extractionDerivation='with import ./. {}; runCommand "unpacked-cabal-hashes" { } "tar xf ${all-cabal-hashes} --strip-components=1 --one-top-level=$out"' +unpacked_hackage="$(nix-build -E "$extractionDerivation" --no-out-link)" + +hackage2nix --hackage "$unpacked_hackage" --preferred-versions <(for n in "$unpacked_hackage"/*/preferred-versions; do cat "$n"; echo; done) --nixpkgs "$PWD" --config pkgs/development/haskell-modules/configuration-hackage2nix.yaml |