lemmy: use pin.json to prepare for update script

lemmy: add initial update script

lemmy: remove use of upstream package.json

lemmy: add update script

lemmy: fixes

lemmy: use importJSON

lemmy: use correct import json ref

pkgs/servers/web-apps/lemmy/package.json

···
-{
-  "name": "lemmy-ui",
-  "version": "0.12.2",
-  "description": "An isomorphic UI for lemmy",
-  "author": "Dessalines <[e-mail]>",
-  "license": "AGPL-3.0",
-  "scripts": {
-    "build:dev": "webpack --mode=development",
-    "build:prod": "webpack --mode=production",
-    "clean": "yarn run rimraf dist",
-    "dev": "yarn start",
-    "lint": "node generate_translations.js && tsc --noEmit && eslint --report-unused-disable-directives --ext .js,.ts,.tsx src",
-    "prebuild:dev": "yarn clean && node generate_translations.js",
-    "prebuild:prod": "yarn clean && node generate_translations.js",
-    "start": "yarn build:dev --watch"
-  },
-  "repository": "https://github.com/LemmyNet/lemmy-ui",
-  "dependencies": {
-    "@typescript-eslint/parser": "^4.28.3",
-    "autosize": "^5.0.1",
-    "choices.js": "^9.0.1",
-    "emoji-short-name": "^1.0.0",
-    "express": "~4.17.1",
-    "i18next": "^20.3.3",
-    "inferno": "^7.4.9",
-    "inferno-create-element": "^7.4.9",
-    "inferno-helmet": "^5.2.1",
-    "inferno-hydrate": "^7.4.9",
-    "inferno-i18next": "github:nimbusec-oss/inferno-i18next#semver:^7.4.2",
-    "inferno-router": "^7.4.9",
-    "inferno-server": "^7.4.9",
-    "isomorphic-cookie": "^1.2.4",
-    "jwt-decode": "^3.1.2",
-    "markdown-it": "^12.1.0",
-    "markdown-it-container": "^3.0.0",
-    "markdown-it-sub": "^1.0.0",
-    "markdown-it-sup": "^1.0.0",
-    "moment": "^2.29.1",
-    "reconnecting-websocket": "^4.4.0",
-    "register-service-worker": "^1.7.2",
-    "rxjs": "^7.2.0",
-    "serialize-javascript": "^6.0.0",
-    "tippy.js": "^6.3.1",
-    "toastify-js": "^1.11.1",
-    "tributejs": "^5.1.3",
-    "ws": "^8.2.0"
-  },
-  "devDependencies": {
-    "@babel/core": "^7.14.6",
-    "@babel/plugin-transform-runtime": "^7.14.5",
-    "@babel/plugin-transform-typescript": "^7.14.6",
-    "@babel/preset-env": "7.15.0",
-    "@babel/preset-typescript": "^7.14.5",
-    "@babel/runtime": "^7.14.6",
-    "@types/autosize": "^4.0.0",
-    "@types/express": "^4.17.13",
-    "@types/node": "^16.7.1",
-    "@types/node-fetch": "^2.5.11",
-    "@types/serialize-javascript": "^5.0.1",
-    "@typescript-eslint/eslint-plugin": "^4.28.3",
-    "babel-loader": "^8.2.2",
-    "babel-plugin-inferno": "^6.3.0",
-    "bootstrap": "^5.0.2",
-    "bootswatch": "^5.0.2",
-    "clean-webpack-plugin": "^4.0.0-alpha.0",
-    "copy-webpack-plugin": "^9.0.1",
-    "css-loader": "^6.0.0",
-    "eslint": "^7.30.0",
-    "eslint-plugin-prettier": "^3.4.1",
-    "husky": "^7.0.1",
-    "import-sort-style-module": "^6.0.0",
-    "iso-639-1": "^2.1.9",
-    "lemmy-js-client": "0.12.0",
-    "lint-staged": "^11.0.1",
-    "mini-css-extract-plugin": "^2.1.0",
-    "node-fetch": "^2.6.1",
-    "node-sass": "^6.0.1",
-    "prettier": "^2.3.2",
-    "prettier-plugin-import-sort": "^0.0.7",
-    "prettier-plugin-organize-imports": "^2.2.0",
-    "prettier-plugin-packagejson": "^2.2.11",
-    "rimraf": "^3.0.2",
-    "run-node-webpack-plugin": "^1.3.0",
-    "sass-loader": "^12.1.0",
-    "sortpack": "^2.2.0",
-    "style-loader": "^3.1.0",
-    "terser": "^5.7.1",
-    "typescript": "^4.3.5",
-    "webpack": "5.51.1",
-    "webpack-cli": "^4.7.2",
-    "webpack-dev-server": "4.0.0",
-    "webpack-node-externals": "^3.0.0"
-  },
-  "engines": {
-    "node": ">=8.9.0"
-  },
-  "engineStrict": true,
-  "lint-staged": {
-    "*.{ts,tsx,js}": [
-      "prettier --write",
-      "eslint --fix"
-    ],
-    "package.json": [
-      "sortpack"
-    ]
-  },
-  "importSort": {
-    ".js, .jsx, .ts, .tsx": {
-      "style": "module",
-      "parser": "typescript"
-    }
-  }
-}

pkgs/servers/web-apps/lemmy/pin.json

···
+{
+  "version": "0.12.2",
+  "serverSha256": "sha256-jhUpQ2f+b0BEXVfQOIujxam2PQA44wluUraJVJxL6LU=",
+  "serverCargoSha256": "sha256-2i8zCwd33LtUKxOChx/SLP9sWMRmxGkKK8xzaJImMHM=",
+  "uiSha256": "sha256-iFLJqUnz4m9/JTSaJSUugzY5KkiKtH0sMYY4ALm2Ebk=",
+  "uiYarnDepsSha256": "sha256-i12J+Qi7Nsjr5JipeRXdkFkh+I/ROsgRw4Vty2cMNyU="
+}

pkgs/servers/web-apps/lemmy/server.nix

···
 , libiconv
 , Security
 }:
-
+let
+  pinData = lib.importJSON ./pin.json;
+  version = pinData.version;
+in
 rustPlatform.buildRustPackage rec {
+  inherit version;
   pname = "lemmy-server";
-  version = "0.12.2";
 
   src = fetchFromGitHub {
     owner = "LemmyNet";
     repo = "lemmy";
     rev = version;
-    sha256 = "sha256-jhUpQ2f+b0BEXVfQOIujxam2PQA44wluUraJVJxL6LU=";
+    sha256 = pinData.serverSha256;
   };
 
-  cargoSha256 = "sha256-2i8zCwd33LtUKxOChx/SLP9sWMRmxGkKK8xzaJImMHM=";
+  cargoSha256 = pinData.serverCargoSha256;
 
   buildInputs = [ postgresql ]
     ++ lib.optionals stdenv.isDarwin [ libiconv Security ];
···
   # https://github.com/sfackler/rust-openssl/blob/master/openssl-sys/build/find_normal.rs#L115
   OPENSSL_LIB_DIR = "${openssl.out}/lib";
   OPENSSL_INCLUDE_DIR = "${openssl.dev}/include";
+
+  passthru.updateScript = ./update.sh;
 
   meta = with lib; {
     description = "🐀 Building a federated alternative to reddit in rust";

pkgs/servers/web-apps/lemmy/ui.nix

···
 }:
 
 let
+  pinData = lib.importJSON ./pin.json;
+
   pkgConfig = {
     node-sass = {
       nativeBuildInputs = [ ];
···
   };
 
   name = "lemmy-ui";
-  version = "0.12.2";
+  version = pinData.version;
 
   src = fetchFromGitHub {
     owner = "LemmyNet";
     repo = name;
     rev = version;
     fetchSubmodules = true;
-    sha256 = "sha256-iFLJqUnz4m9/JTSaJSUugzY5KkiKtH0sMYY4ALm2Ebk=";
+    sha256 = pinData.uiSha256;
   };
 in
 mkYarnPackage {
···
 
   offlineCache = fetchYarnDeps {
     yarnLock = src + "/yarn.lock";
-    sha256 = "sha256-i12J+Qi7Nsjr5JipeRXdkFkh+I/ROsgRw4Vty2cMNyU=";
+    sha256 = pinData.uiYarnDepsSha256;
   };
-
-  # Fails mysteriously on source/package.json
-  # Upstream package.json is missing a newline at the end
-  packageJSON = ./package.json;
 
   yarnPreBuild = ''
     export npm_config_nodedir=${nodejs}
···
   '';
 
   distPhase = "true";
+
+  passthru.updateScript = ./update.sh;
 
   meta = with lib; {
     description = "Building a federated alternative to reddit in rust";

pkgs/servers/web-apps/lemmy/update.sh

···
+#!/usr/bin/env nix-shell
+#! nix-shell -i oil -p jq sd nix-prefetch-github ripgrep moreutils
+
+# TODO set to `verbose` or `extdebug` once implemented in oil
+shopt --set xtrace
+
+var directory = $(dirname $0 | xargs realpath)
+var owner = "LemmyNet"
+var ui_repo = "lemmy-ui"
+var server_repo = "lemmy"
+var latest_rev = $(curl -q https://api.github.com/repos/${owner}/${server_repo}/releases/latest | \
+  jq -r '.tag_name')
+var latest_version = $(echo $latest_rev)
+var current_version = $(jq -r '.version' $directory/pin.json)
+if ($latest_version === $current_version) {
+  echo "lemmy is already up-to-date"
+  return 0
+} else {
+  var server_tarball_meta = $(nix-prefetch-github $owner $server_repo --rev "$latest_rev")
+  var server_tarball_hash = "sha256-$(echo $server_tarball_meta | jq -r '.sha256')"
+  var ui_tarball_meta = $(nix-prefetch-github $owner $ui_repo --rev "$latest_rev")
+  var ui_tarball_hash = "sha256-$(echo $ui_tarball_meta | jq -r '.sha256')"
+
+  jq ".version = \"$latest_version\" | \
+      .\"serverSha256\" = \"$server_tarball_hash\" | \
+      .\"uiSha256\" = \"$ui_tarball_hash\" | \
+      .\"serverCargoSha256\" = \"\" | \
+      .\"uiYarnDepsSha256\" = \"\"" $directory/pin.json | sponge $directory/pin.json
+
+  var new_cargo_sha256 = $(nix-build -A lemmy-server 2>&1 | \
+    tail -n 2 | \
+    head -n 1 | \
+    sd '\s+got:\s+' '')
+
+  var new_offline_cache_sha256 = $(nix-build -A lemmy-ui 2>&1 | \
+    tail -n 2 | \
+    head -n 1 | \
+    sd '\s+got:\s+' '')
+
+  jq ".\"serverCargoSha256\" = \"$new_cargo_sha256\" | \
+      .\"uiYarnDepsSha256\" = \"$new_offline_cache_sha256\"" \
+    $directory/pin.json | sponge $directory/pin.json
+}