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cargoSetupPostUnpackHook() {
echo "Executing cargoSetupPostUnpackHook"
# Some cargo builds include build hooks that modify their own vendor
# dependencies. This copies the vendor directory into the build tree and makes
# it writable. If we're using a tarball, the unpackFile hook already handles
# this for us automatically.
if [ -z $cargoVendorDir ]; then
unpackFile "$cargoDeps"
export cargoDepsCopy=$(stripHash $cargoDeps)
else
cargoDepsCopy="$sourceRoot/${cargoRoot:+$cargoRoot/}${cargoVendorDir}"
fi
if [ ! -d .cargo ]; then
mkdir .cargo
fi
config="$(pwd)/$cargoDepsCopy/.cargo/config";
if [[ ! -e $config ]]; then
config=@defaultConfig@
fi;
tmp_config=$(mktemp)
substitute $config $tmp_config \
--subst-var-by vendor "$(pwd)/$cargoDepsCopy"
cat ${tmp_config} >> .cargo/config
cat >> .cargo/config <<'EOF'
@rustTarget@
EOF
echo "Finished cargoSetupPostUnpackHook"
}
# After unpacking and applying patches, check that the Cargo.lock matches our
# src package. Note that we do this after the patchPhase, because the
# patchPhase may create the Cargo.lock if upstream has not shipped one.
cargoSetupPostPatchHook() {
echo "Executing cargoSetupPostPatchHook"
cargoDepsLockfile="$NIX_BUILD_TOP/$cargoDepsCopy/Cargo.lock"
srcLockfile="$NIX_BUILD_TOP/$sourceRoot/${cargoRoot:+$cargoRoot/}/Cargo.lock"
echo "Validating consistency between $srcLockfile and $cargoDepsLockfile"
if ! @diff@ $srcLockfile $cargoDepsLockfile; then
# If the diff failed, first double-check that the file exists, so we can
# give a friendlier error msg.
if ! [ -e $srcLockfile ]; then
echo "ERROR: Missing Cargo.lock from src. Expected to find it at: $srcLockfile"
echo "Hint: You can use the cargoPatches attribute to add a Cargo.lock manually to the build."
exit 1
fi
if ! [ -e $cargoDepsLockfile ]; then
echo "ERROR: Missing lockfile from cargo vendor. Expected to find it at: $cargoDepsLockfile"
exit 1
fi
echo
echo "ERROR: cargoSha256 is out of date"
echo
echo "Cargo.lock is not the same in $cargoDepsCopy"
echo
echo "To fix the issue:"
echo '1. Use "0000000000000000000000000000000000000000000000000000" as the cargoSha256 value'
echo "2. Build the derivation and wait for it to fail with a hash mismatch"
echo "3. Copy the 'got: sha256:' value back into the cargoSha256 field"
echo
exit 1
fi
unset cargoDepsCopy
echo "Finished cargoSetupPostPatchHook"
}
if [ -z "${dontCargoSetupPostUnpack-}" ]; then
postUnpackHooks+=(cargoSetupPostUnpackHook)
fi
if [ -z ${cargoVendorDir-} ]; then
postPatchHooks+=(cargoSetupPostPatchHook)
fi
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