tjh.dev
1#!/usr/bin/env nix-shell
2#!nix-shell -i bash -p nix coreutils curl jq nix-prefetch-git prefetch-npm-deps
3
4set -euo pipefail
5
6OWNER=axllent
7REPO=mailpit
8
9TARGET_TAG="$(curl -L -s ${GITHUB_TOKEN:+-u ":${GITHUB_TOKEN}"} "https://api.github.com/repos/$OWNER/$REPO/releases/latest" | jq -r '.tag_name')"
10TARGET_VERSION="$(echo "$TARGET_TAG" | sed -e 's/^v//')"
11
12if [[ "$UPDATE_NIX_OLD_VERSION" == "$TARGET_VERSION" ]]; then
13 # mailpit is up-to-date
14 if [[ -n "$UPDATE_NIX_ATTR_PATH" ]]; then
15 echo "[{}]";
16 fi
17
18 exit 0
19fi
20
21extractVendorHash() {
22 original="${1?original hash missing}"
23 result="$(nix-build -A mailpit.goModules 2>&1 | tail -n3 | grep 'got:' | cut -d: -f2- | xargs echo || true)"
24 [ -z "$result" ] && { echo "$original"; } || { echo "$result"; }
25}
26
27TMP="$(mktemp -d)"
28trap 'rm -rf "$TMP"' exit
29
30NIXPKGS_MAILPIT_PATH=$(cd $(dirname ${BASH_SOURCE[0]}); pwd -P)/
31SOURCE_NIX="$NIXPKGS_MAILPIT_PATH/source.nix"
32
33PREFETCH_JSON=$TMP/prefetch.json
34nix-prefetch-git --rev "$TARGET_TAG" --url "https://github.com/$OWNER/$REPO" > "$PREFETCH_JSON"
35PREFETCH_HASH="$(jq '.hash' -r < "$PREFETCH_JSON")"
36PREFETCH_PATH="$(jq '.path' -r < "$PREFETCH_JSON")"
37NPM_DEPS_HASH="$(prefetch-npm-deps $PREFETCH_PATH/package-lock.json)"
38
39FAKE_HASH="sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
40
41cat > $SOURCE_NIX <<-EOF
42{
43 version = "$TARGET_VERSION";
44 hash = "$PREFETCH_HASH";
45 npmDepsHash = "$NPM_DEPS_HASH";
46 vendorHash = "$FAKE_HASH";
47}
48EOF
49
50GO_HASH="$(nix-instantiate --eval -A mailpit.vendorHash | tr -d '"')"
51VENDOR_HASH=$(extractVendorHash "$GO_HASH")
52
53cat > $SOURCE_NIX <<-EOF
54{
55 version = "$TARGET_VERSION";
56 hash = "$PREFETCH_HASH";
57 npmDepsHash = "$NPM_DEPS_HASH";
58 vendorHash = "$VENDOR_HASH";
59}
60EOF
61
62if [[ -z "$UPDATE_NIX_ATTR_PATH" ]]; then
63 exit 0
64fi
65
66cat <<-EOF
67[{
68 "attrPath": "$UPDATE_NIX_ATTR_PATH",
69 "oldVersion": "$UPDATE_NIX_OLD_VERSION",
70 "newVersion": "$TARGET_VERSION",
71 "files": ["$SOURCE_NIX"]
72}]
73EOF