core: allow load from nix store

packages/hydrooj/src/loader.ts

@@ -7,6 +7,7 @@ import './init';
 import './interface';
 import Schema from 'schemastery';
 import path from 'path';
+import child from 'child_process';
 // eslint-disable-next-line import/no-duplicates
 import './utils';
 import cac from 'cac';
@@ -26,6 +27,21 @@ logger.debug('%o', argv);
 process.on('unhandledRejection', logger.error);
 process.on('uncaughtException', logger.error);
 
+const HYDROPATH = [];
+
+if (process.env.NIX_PROFILES) {
+    try {
+        const result = JSON.parse(child.execSync('nix-env -q --json --out-path --meta').toString()) as Record<string, any>;
+        for (const derivation of Object.values(result)) {
+            if (derivation.name.startsWith('hydro-plugin-') && derivation.outputs?.out) {
+                HYDROPATH.push(derivation.outputs.out);
+            }
+        }
+    } catch (e) {
+        logger.error('Nix detected, but failed to list installed derivations.');
+    }
+}
+
 export function resolveConfig(plugin: any, config: any) {
     if (config === false) return;
     if (config === true) config = undefined;
@@ -108,8 +124,12 @@ export class Loader {
         try {
             this.cache[name] ||= require.resolve(name);
         } catch (err) {
-            logger.error(err.message);
+            try {
-            return;
+                this.cache[name] ||= require.resolve(name, { paths: HYDROPATH });
+            } catch (e) {
+                logger.error(err.message);
+                return;
+            }
         }
         return unwrapExports(require(this.cache[name]));
     }

packages/hydrooj/src/service/bus.ts

@@ -94,7 +94,7 @@ export interface EventMap extends LifecycleEvents, HandlerEvents {
 
     'contest/before-add': (payload: Partial<Tdoc>) => VoidReturn
     'contest/add': (payload: Partial<Tdoc>, id: ObjectId) => VoidReturn
-    'contest/list': (query: Fileter<Tdoc>, handler: any) => VoidReturn
+    'contest/list': (query: Filter<Tdoc>, handler: any) => VoidReturn
     'contest/scoreboard': (tdoc: Tdoc, rows: ScoreboardRow[], udict: BaseUserDict, pdict: ProblemDict) => VoidReturn
     'contest/balloon': (domainId: string, tid: ObjectId, bdoc: ContestBalloonDoc) => VoidReturn
 

packages/utils/lib/cases.ts

@@ -44,7 +44,7 @@ export function convertIniConfig(ini: string) {
     const count = parseInt(f[0], 10);
     const res = { subtasks: [] };
     for (let i = 1; i <= count; i++) {
-        if (!f[i] || !f[i].trim()) throw new Error('Testcada count incorrect.');
+        if (!f[i]?.trim()) throw new Error('Testdata count incorrect.');
         const [input, output, time, score, memory] = f[i].split('|');
         const cur = {
             cases: [{ input, output }],