pyrox.dev
1#! /usr/bin/env nix-shell
2#! nix-shell -i bash -p nix curl jq nix-prefetch-github git gnused gnugrep -I nixpkgs=.
3
4set -eu -o pipefail
5
6tmpfile=$(mktemp "update-stackage.XXXXXXX")
7# shellcheck disable=SC2064
8
9stackage_config="pkgs/development/haskell-modules/configuration-hackage2nix/stackage.yaml"
10
11trap "rm ${tmpfile} ${tmpfile}.new" 0
12touch "$tmpfile" "$tmpfile.new" # Creating files here so that trap creates no errors.
13
14curl -L -s "https://stackage.org/lts/cabal.config" >"$tmpfile"
15old_version=$(grep "# Stackage" $stackage_config | sed -E 's/.*([0-9]{2}\.[0-9]+)/\1/')
16version=$(sed -rn "s/^--.*http:..(www.)?stackage.org.snapshot.lts-//p" "$tmpfile")
17
18if [[ "$old_version" == "$version" ]]; then
19 echo "No new stackage version"
20 exit 0 # Nothing to do
21fi
22
23echo "Updating Stackage LTS from $old_version to $version."
24
25# Create a simple yaml version of the file.
26sed -r \
27 -e '/^--/d' \
28 -e 's|^constraints:||' \
29 -e 's|^ +| - |' \
30 -e 's|,$||' \
31 -e '/installed$/d' \
32 -e '/^$/d' \
33 < "${tmpfile}" | sort --ignore-case >"${tmpfile}.new"
34
35cat > $stackage_config << EOF
36# Stackage LTS $version
37# This file is auto-generated by
38# maintainers/scripts/haskell/update-stackage.sh
39default-package-overrides:
40EOF
41
42# Drop restrictions on some tools where we always want the latest version.
43sed -r \
44 -e '/ cabal2nix /d' \
45 -e '/ distribution-nixpkgs /d' \
46 -e '/ jailbreak-cabal /d' \
47 -e '/ language-nix /d' \
48 < "${tmpfile}.new" >> $stackage_config
49
50if [[ "${1:-}" == "--do-commit" ]]; then
51git add $stackage_config
52git commit -F - << EOF
53haskellPackages: stackage-lts $old_version -> $version
54
55This commit has been generated by maintainers/scripts/haskell/update-stackage.sh
56EOF
57fi