mirror of
https://github.com/NixOS/nixpkgs.git
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1158f20f15
This allows other scripts to detect whether anything changed without resorting to git-diff(1): If nothing changed, stdout will be empty (i.e. we now enforce that other messages go to stderr). To make sure that this behavior is retained in the future, the scripts' behavior is briefly documented in the files' header.
115 lines
3.6 KiB
Bash
Executable file
115 lines
3.6 KiB
Bash
Executable file
#! /usr/bin/env nix-shell
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#! nix-shell -i bash -p curl jq git gnused gnugrep -I nixpkgs=.
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# shellcheck shell=bash
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#
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# SYNOPSIS
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#
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# Update version constraints in hackage2nix config file from Stackage.
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#
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# DESCRIPTION
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#
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# Fetches the latest snapshot of the configured Stackage solver which is
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# configured via the SOLVER (either LTS or Nightly) and VERSION variables in
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# the script.
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#
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# VERSION is only applicable if SOLVER is LTS. SOLVER=LTS and VERSION=22
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# will cause update-stackage.sh to fetch the latest LTS-22.XX version.
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# If empty, the latest version of the solver is used.
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#
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# If the configuration file has been updated, update-stackage.sh prints a
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# version difference to stdout, e.g. 23.11 -> 23.13. Otherwise, stdout remains
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# empty.
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#
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# EXIT STATUS
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#
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# Always exit with zero (even if nothing changed) unless there was an error.
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set -eu -o pipefail
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# Stackage solver to use, LTS or Nightly
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# (should be capitalized like the display name)
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SOLVER=LTS
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# Stackage solver verson, if any. Use latest if empty
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VERSION=
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TMP_TEMPLATE=update-stackage.XXXXXXX
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readonly SOLVER
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readonly VERSION
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readonly TMP_TEMPLATE
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toLower() {
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printf "%s" "$1" | tr '[:upper:]' '[:lower:]'
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}
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tmpfile=$(mktemp "$TMP_TEMPLATE")
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tmpfile_new=$(mktemp "$TMP_TEMPLATE")
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stackage_config="pkgs/development/haskell-modules/configuration-hackage2nix/stackage.yaml"
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trap 'rm "${tmpfile}" "${tmpfile_new}"' 0
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touch "$tmpfile" "$tmpfile_new" # Creating files here so that trap creates no errors.
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curl -L -s "https://stackage.org/$(toLower "$SOLVER")${VERSION:+-$VERSION}/cabal.config" >"$tmpfile"
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old_version=$(grep '^# Stackage' $stackage_config | sed -e 's/.\+ \([A-Za-z]\+ [0-9.-]\+\)$/\1/g')
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version="$SOLVER $(sed -rn "s/^--.*http:..(www.)?stackage.org.snapshot.$(toLower "$SOLVER")-//p" "$tmpfile")"
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if [[ "$old_version" == "$version" ]]; then
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echo "No new stackage version" >&2
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exit 0 # Nothing to do
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fi
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echo "Updating Stackage from $old_version to $version." >&2
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# Create a simple yaml version of the file.
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sed -r \
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-e '/^--/d' \
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-e 's|^constraints:||' \
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-e 's|^ +| - |' \
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-e 's|,$||' \
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-e '/^with-compiler:/d' \
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-e '/installed$/d' \
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-e '/^$/d' \
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< "${tmpfile}" | LC_ALL=C.UTF-8 sort --ignore-case >"${tmpfile_new}"
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cat > $stackage_config << EOF
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# Stackage $version
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# This file is auto-generated by
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# maintainers/scripts/haskell/update-stackage.sh
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default-package-overrides:
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EOF
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# Drop restrictions on some tools where we always want the latest version.
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sed -r \
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-e '/ cabal2nix /d' \
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-e '/ distribution-nixpkgs /d' \
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-e '/ jailbreak-cabal /d' \
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-e '/ language-nix /d' \
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-e '/ hackage-db /d' \
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-e '/ cabal-install /d' \
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-e '/ cabal-install-solver /d' \
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-e '/ lsp /d' \
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-e '/ lsp-types /d' \
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-e '/ lsp-test /d' \
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-e '/ hie-bios /d' \
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-e '/ ShellCheck /d' \
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-e '/ Agda /d' \
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-e '/ stack /d' \
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< "${tmpfile_new}" >> $stackage_config
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# Explanations:
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# cabal2nix, distribution-nixpkgs, jailbreak-cabal, language-nix: These are our packages and we know what we are doing.
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# lsp, lsp-types, lsp-test, hie-bios: These are tightly coupled to hls which is not in stackage. They have no rdeps in stackage.
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# ShellCheck: latest version of command-line dev tool.
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# Agda: The Agda community is fast-moving; we strive to always include the newest versions of Agda and the Agda packages in nixpkgs.
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version_diff="$old_version -> $version"
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if [[ "${1:-}" == "--do-commit" ]]; then
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git add $stackage_config
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git commit -F - << EOF
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haskellPackages: stackage $version_diff
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This commit has been generated by maintainers/scripts/haskell/update-stackage.sh
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EOF
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else
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echo "$version_diff"
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fi
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