git.iko.soy/typeable/cabal2nix
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typeable/cabal2nix/update-stackage.sh
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1#! /usr/bin/env bash
3set -eu -o pipefail
5tmpfile=$(mktemp "stackage-update.XXXXXXX")
6trap "rm $tmpfile" 0
8curl -L -s "https://www.stackage.org/lts/cabal.config" >"$tmpfile"
9version=$(sed -n "s/^--.*http:..www.stackage.org.snapshot.lts-//p" "$tmpfile")
11# Create a simple yaml version of the file.
12sed -r \
13 -e '/^--/d' \
14 -e 's|^constraints:||' \
15 -e 's|^ +| - |' \
16 -e 's|,$||' \
17 -e '/installed$/d' \
18 -e '/^$/d' \
19 -i "$tmpfile"
21# Drop restrictions on some tools where we always want the latest version.
22sed -r \
23 -e '/ cabal2nix /d' \
24 -e '/ cabal-install /d' \
25 -e '/ distribution-nixpkgs /d' \
26 -e '/ git-annex /d' \
27 -e '/ hindent /d' \
28 -e '/ hledger/d' \
29 -e '/ hoogle /d' \
30 -e '/ hopenssl /d' \
31 -e '/ language-nix /d' \
32 -e '/ ShellCheck /d' \
33 -e '/ stack /d' \
34 -i "$tmpfile"
36# Drop the previous configuration ...
37sed -e '/# LTS Haskell/,/^$/c \TODO\
38' -i nixpkgs/pkgs/development/haskell-modules/configuration-hackage2nix.yaml
40# ... and replace it with the new one.
41sed -e "/TODO/r $tmpfile" \
42 -e "s/TODO/ # LTS Haskell $version/" \
43 -i nixpkgs/pkgs/development/haskell-modules/configuration-hackage2nix.yaml