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|
verlte() {
[ "$1" = "$(printf '%s\n%s\n' "$1" "$2" | sort -V | head -n1)" ]
}
mkdir -p "$build_dir/bin"
if command -v stack; then
stack_ver=$(stack --numeric-version)
else
stack_ver=0
fi
ghc_ver=$(ghc --numeric-version)
# we need at least 1.9.4 for `stack ide packages --cabal-files --stdout`
if verlte "$stack_ver" 1.9.3 &&
verlte 8.2.2 "$ghc_ver"
then
PATH="$build_dir/bin:$PATH"
export PATH
cabal v2-install \
--symlink-bindir="$build_dir/bin" \
--constraint "network < 3" \
--package-env=/dev/null \
hpack || exit 1
stack_dir="$(mktemp --tmpdir -d "cabal-helper.stacksrcXXXXXXXXX")"
git clone \
--depth=1 \
--branch=stable \
https://github.com/commercialhaskell/stack "$stack_dir" || exit 1
(
cd "$stack_dir"
hpack
cabal v2-install \
--symlink-bindir="$build_dir/bin" \
--constraint "Cabal == 2.4.0.1" \
--constraint "network < 3" . \
--package-env=/dev/null || exit 1
) || exit 1
fi
|
