void-packages/common/build-style/haskell-stack.sh

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#
# This helper is for templates built using Haskell stack.
#
# make_build_args="stack-build-flags"
# stackage="lts-X.Y" # or include a stack.yaml in $FILESDIR
#
do_build() {
# use --skip-ghc-check to really force stack to use the ghc in the system
# --system-ghc still downloads if stackage ghc version does not match ours
# this fails on all platforms other than x86_64 glibc when we bump ghc
local _stack_args="--system-ghc --skip-ghc-check"
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if [ -f "${FILESDIR}/stack.yaml" ]; then
msg_normal "Using stack config in stack.yaml.\n"
cp "${FILESDIR}/stack.yaml" .
elif [ -z "$stackage" -a -f "stack.yaml" ]; then
msg_normal "Using stack.yaml from downloaded source.\n"
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else
if [ -z "$stackage" ]; then
msg_error "Stackage version not set in \$stackage.\n"
fi
msg_normal "Using stackage resolver ${stackage}.\n"
STACK_ROOT=$wrksrc/.stack \
stack init ${_stack_args} --force --resolver ${stackage}
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fi
STACK_ROOT=$wrksrc/.stack stack ${_stack_args} ${makejobs} build \
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${make_build_args}
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}
do_install() {
local _stack_args="--system-ghc --skip-ghc-check"
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vmkdir usr/bin
STACK_ROOT=$wrksrc/.stack stack ${_stack_args} install \
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${make_build_args} --local-bin-path=${DESTDIR}/usr/bin
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}