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#!/usr/bin/env nix-shell
#!nix-shell -i bash -p nix coreutils curl jq nix-prefetch-git prefetch-npm-deps
set -euo pipefail
OWNER=axllent
REPO=mailpit
TARGET_TAG="$(curl -L -s ${GITHUB_TOKEN:+-u ":${GITHUB_TOKEN}"} "https://api.github.com/repos/$OWNER/$REPO/releases/latest" | jq -r '.tag_name')"
TARGET_VERSION="$(echo "$TARGET_TAG" | sed -e 's/^v//')"
if [[ "$UPDATE_NIX_OLD_VERSION" == "$TARGET_VERSION" ]]; then
# mailpit is up-to-date
if [[ -n "$UPDATE_NIX_ATTR_PATH" ]]; then
echo "[{}]";
fi
exit 0
fi
extractVendorHash() {
original="${1?original hash missing}"
result="$(nix-build -A mailpit.goModules 2>&1 | tail -n3 | grep 'got:' | cut -d: -f2- | xargs echo || true)"
[ -z "$result" ] && { echo "$original"; } || { echo "$result"; }
}
TMP="$(mktemp -d)"
trap 'rm -rf "$TMP"' exit
NIXPKGS_MAILPIT_PATH=$(cd $(dirname ${BASH_SOURCE[0]}); pwd -P)/
VERSIONS_NIX="$NIXPKGS_MAILPIT_PATH/versions.nix"
PREFETCH_JSON=$TMP/prefetch.json
nix-prefetch-git --rev "$TARGET_TAG" --url "https://github.com/$OWNER/$REPO" > "$PREFETCH_JSON"
PREFETCH_HASH="$(jq '.hash' -r < "$PREFETCH_JSON")"
PREFETCH_PATH="$(jq '.path' -r < "$PREFETCH_JSON")"
NPM_DEPS_HASH="$(prefetch-npm-deps $PREFETCH_PATH/package-lock.json)"
FAKE_HASH="sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
cat > $VERSIONS_NIX <<-EOF
{
version = "$TARGET_VERSION";
hash = "$PREFETCH_HASH";
npmDepsHash = "$NPM_DEPS_HASH";
vendorHash = "$FAKE_HASH";
}
EOF
GO_HASH="$(nix-instantiate --eval -A mailpit.vendorHash | tr -d '"')"
VENDOR_HASH=$(extractVendorHash "$GO_HASH")
cat > $VERSIONS_NIX <<-EOF
{
version = "$TARGET_VERSION";
hash = "$PREFETCH_HASH";
npmDepsHash = "$NPM_DEPS_HASH";
vendorHash = "$VENDOR_HASH";
}
EOF
if [[ -z "$UPDATE_NIX_ATTR_PATH" ]]; then
exit 0
fi
cat <<-EOF
[{
"attrPath": "$UPDATE_NIX_ATTR_PATH",
"oldVersion": "$UPDATE_NIX_OLD_VERSION",
"newVersion": "$TARGET_VERSION",
"files": ["$VERSIONS_NIX"]
}]
EOF
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