Last good Nixpkgs for Weston+nouveau? archive

I came this commit hash to terwiz[m] on IRC, who is trying to figure out
what the last version of Spectrum that worked on their NUC with Nvidia
graphics is.

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."