nixpkgs/maintainers/scripts/haskell/update-stackage.sh
sternenseemann bd4a36f924 git-annex: 10.20250416 -> 10.20250721
Stackage LTS 24 contains git-annex (contrary to LTS 23). I believe this
resulted in a downgrade of git-annex when switching to LTS 23. We'll
want to continue using the latest version of git-annex. At the very
least, this will fix the trouble we're having with its test suite on
haskell-updates.
2025-08-29 22:08:39 +02:00

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#! /usr/bin/env nix-shell
#! nix-shell -i bash -p curl jq git gnused gnugrep -I nixpkgs=.
# shellcheck shell=bash
#
# SYNOPSIS
#
# Update version constraints in hackage2nix config file from Stackage.
#
# DESCRIPTION
#
# Fetches the latest snapshot of the configured Stackage solver which is
# configured via the SOLVER (either LTS or Nightly) and VERSION variables in
# the script.
#
# VERSION is only applicable if SOLVER is LTS. SOLVER=LTS and VERSION=22
# will cause update-stackage.sh to fetch the latest LTS-22.XX version.
# If empty, the latest version of the solver is used.
#
# If the configuration file has been updated, update-stackage.sh prints a
# version difference to stdout, e.g. 23.11 -> 23.13. Otherwise, stdout remains
# empty.
#
# EXIT STATUS
#
# Always exit with zero (even if nothing changed) unless there was an error.
set -eu -o pipefail
if [[ "${1:-}" == "--do-commit" ]]; then
echo "$0: --do-commit is no longer supported. Use update-package-set.sh instead."
exit 100
fi
# Stackage solver to use, LTS or Nightly
# (should be capitalized like the display name)
SOLVER=LTS
# Stackage solver verson, if any. Use latest if empty
VERSION=
TMP_TEMPLATE=update-stackage.XXXXXXX
readonly SOLVER
readonly VERSION
readonly TMP_TEMPLATE
toLower() {
printf "%s" "$1" | tr '[:upper:]' '[:lower:]'
}
tmpfile=$(mktemp "$TMP_TEMPLATE")
tmpfile_new=$(mktemp "$TMP_TEMPLATE")
stackage_config="pkgs/development/haskell-modules/configuration-hackage2nix/stackage.yaml"
trap 'rm "${tmpfile}" "${tmpfile_new}"' 0
touch "$tmpfile" "$tmpfile_new" # Creating files here so that trap creates no errors.
curl -L -s "https://stackage.org/$(toLower "$SOLVER")${VERSION:+-$VERSION}/cabal.config" >"$tmpfile"
old_version=$(grep '^# Stackage' $stackage_config | sed -e 's/.\+ \([A-Za-z]\+ [0-9.-]\+\)$/\1/g')
version="$SOLVER $(sed -rn "s/^--.*http:..(www.)?stackage.org.snapshot.$(toLower "$SOLVER")-//p" "$tmpfile")"
if [[ "$old_version" == "$version" ]]; then
echo "No new stackage version" >&2
exit 0 # Nothing to do
fi
echo "Updating Stackage from $old_version to $version." >&2
# Create a simple yaml version of the file.
sed -r \
-e '/^--/d' \
-e 's|^constraints:||' \
-e 's|^ +| - |' \
-e 's|,$||' \
-e '/^with-compiler:/d' \
-e '/installed$/d' \
-e '/^$/d' \
< "${tmpfile}" | LC_ALL=C.UTF-8 sort --ignore-case >"${tmpfile_new}"
cat > $stackage_config << EOF
# Stackage $version
# This file is auto-generated by
# maintainers/scripts/haskell/update-stackage.sh
default-package-overrides:
EOF
# Drop restrictions on some tools where we always want the latest version.
sed -r \
-e '/ cabal2nix /d' \
-e '/ distribution-nixpkgs /d' \
-e '/ jailbreak-cabal /d' \
-e '/ language-nix /d' \
-e '/ hackage-db /d' \
-e '/ cabal-install /d' \
-e '/ cabal-install-solver /d' \
-e '/ lsp /d' \
-e '/ lsp-types /d' \
-e '/ lsp-test /d' \
-e '/ hie-bios /d' \
-e '/ ShellCheck /d' \
-e '/ Agda /d' \
-e '/ stack /d' \
-e '/ git-annex /d' \
< "${tmpfile_new}" >> $stackage_config
# Explanations:
# cabal2nix, distribution-nixpkgs, jailbreak-cabal, language-nix: These are our packages and we know what we are doing.
# lsp, lsp-types, lsp-test, hie-bios: These are tightly coupled to hls which is not in stackage. They have no rdeps in stackage.
# ShellCheck: latest version of command-line dev tool.
# Agda: The Agda community is fast-moving; we strive to always include the newest versions of Agda and the Agda packages in nixpkgs.
echo "$old_version -> $version"