maintainers/scripts/haskell/update-stackage.sh

   1 #! /usr/bin/env nix-shell
   2 #! nix-shell -i bash -p nix curl jq git gnused gnugrep -I nixpkgs=.
   3 # shellcheck shell=bash
   4
   5 set -eu -o pipefail
   6
   7 # Stackage solver to use, LTS or Nightly
   8 # (should be capitalized like the display name)
   9 SOLVER=LTS
  10 # Stackage solver verson, if any. Use latest if empty
  11 VERSION=
  12 TMP_TEMPLATE=update-stackage.XXXXXXX
  13 readonly SOLVER
  14 readonly VERSION
  15 readonly TMP_TEMPLATE
  16
  17 toLower() {
  18     printf "%s" "$1" | tr '[:upper:]' '[:lower:]'
  19 }
  20
  21 tmpfile=$(mktemp "$TMP_TEMPLATE")
  22 tmpfile_new=$(mktemp "$TMP_TEMPLATE")
  23
  24 stackage_config="pkgs/development/haskell-modules/configuration-hackage2nix/stackage.yaml"
  25
  26 trap 'rm "${tmpfile}" "${tmpfile_new}"' 0
  27 touch "$tmpfile" "$tmpfile_new" # Creating files here so that trap creates no errors.
  28
  29 curl -L -s "https://stackage.org/$(toLower "$SOLVER")${VERSION:+-$VERSION}/cabal.config" >"$tmpfile"
  30 old_version=$(grep '^# Stackage' $stackage_config | sed -e 's/.\+ \([A-Za-z]\+ [0-9.-]\+\)$/\1/g')
  31 version="$SOLVER $(sed -rn "s/^--.*http:..(www.)?stackage.org.snapshot.$(toLower "$SOLVER")-//p" "$tmpfile")"
  32
  33 if [[ "$old_version" == "$version" ]]; then
  34    echo "No new stackage version"
  35    exit 0 # Nothing to do
  36 fi
  37
  38 echo "Updating Stackage from $old_version to $version."
  39
  40 # Create a simple yaml version of the file.
  41 sed -r \
  42     -e '/^--/d' \
  43     -e 's|^constraints:||' \
  44     -e 's|^ +|  - |' \
  45     -e 's|,$||' \
  46     -e '/^with-compiler:/d' \
  47     -e '/installed$/d' \
  48     -e '/^$/d' \
  49     < "${tmpfile}" | sort --ignore-case >"${tmpfile_new}"
  50
  51 cat > $stackage_config << EOF
  52 # Stackage $version
  53 # This file is auto-generated by
  54 # maintainers/scripts/haskell/update-stackage.sh
  55 default-package-overrides:
  56 EOF
  57
  58 # Drop restrictions on some tools where we always want the latest version.
  59 sed -r \
  60     -e '/ cabal2nix /d' \
  61     -e '/ distribution-nixpkgs /d' \
  62     -e '/ jailbreak-cabal /d' \
  63     -e '/ language-nix /d' \
  64     -e '/ hackage-db /d' \
  65     -e '/ cabal-install /d' \
  66     -e '/ cabal-install-solver /d' \
  67     -e '/ lsp /d' \
  68     -e '/ lsp-types /d' \
  69     -e '/ lsp-test /d' \
  70     -e '/ hie-bios /d' \
  71     -e '/ ShellCheck /d' \
  72     -e '/ Agda /d' \
  73     -e '/ stack /d' \
  74     < "${tmpfile_new}" >> $stackage_config
  75 # Explanations:
  76 # cabal2nix, distribution-nixpkgs, jailbreak-cabal, language-nix: These are our packages and we know what we are doing.
  77 # lsp, lsp-types, lsp-test, hie-bios: These are tightly coupled to hls which is not in stackage. They have no rdeps in stackage.
  78 # ShellCheck: latest version of command-line dev tool.
  79 # Agda: The Agda community is fast-moving; we strive to always include the newest versions of Agda and the Agda packages in nixpkgs.
  80
  81 if [[ "${1:-}" == "--do-commit" ]]; then
  82 git add $stackage_config
  83 git commit -F - << EOF
  84 haskellPackages: stackage $old_version -> $version
  85
  86 This commit has been generated by maintainers/scripts/haskell/update-stackage.sh
  87 EOF
  88 fi