diff options
Diffstat (limited to 'maintainers/scripts/haskell/regenerate-hackage-packages.sh')
-rwxr-xr-x | maintainers/scripts/haskell/regenerate-hackage-packages.sh | 46 |
1 files changed, 46 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..9d51eb4ca4a --- /dev/null +++ b/maintainers/scripts/haskell/regenerate-hackage-packages.sh @@ -0,0 +1,46 @@ +#! /usr/bin/env nix-shell +#! nix-shell -i bash -p coreutils haskellPackages.cabal2nix-unstable git nix -I nixpkgs=. + +# This script is used to regenerate nixpkgs' Haskell package set, using the +# tool hackage2nix from the nixos/cabal2nix repo. hackage2nix looks at the +# config files in pkgs/development/haskell-modules/configuration-hackage2nix +# 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-unstable.sh, +# for updating the version of hackage2nix used to perform this task. + +set -euo pipefail + +HACKAGE2NIX="${HACKAGE2NIX:-hackage2nix}" + +# To prevent hackage2nix fails because of encoding. +# See: https://github.com/NixOS/nixpkgs/pull/122023 +export LC_ALL=C.UTF-8 + +extraction_derivation='with import ./. {}; runCommandLocal "unpacked-cabal-hashes" { } "tar xf ${all-cabal-hashes} --strip-components=1 --one-top-level=$out"' +unpacked_hackage="$(nix-build -E "$extraction_derivation" --no-out-link)" +config_dir=pkgs/development/haskell-modules/configuration-hackage2nix + +echo "Starting hackage2nix to regenerate pkgs/development/haskell-modules/hackage-packages.nix ..." +"$HACKAGE2NIX" \ + --hackage "$unpacked_hackage" \ + --preferred-versions <(for n in "$unpacked_hackage"/*/preferred-versions; do cat "$n"; echo; done) \ + --nixpkgs "$PWD" \ + --config "$config_dir/main.yaml" \ + --config "$config_dir/stackage.yaml" \ + --config "$config_dir/broken.yaml" \ + --config "$config_dir/transitive-broken.yaml" + +if [[ "${1:-}" == "--do-commit" ]]; then +git add pkgs/development/haskell-modules/hackage-packages.nix +git commit -F - << EOF +haskellPackages: regenerate package set based on current config + +This commit has been generated by maintainers/scripts/haskell/regenerate-hackage-packages.sh +EOF +fi + +echo "Regeneration of hackage-packages.nix finished." |