chromium: use cached dependencies from other attributes in update script

This patch extends the caching mechanism of the chromium
update scripts to use cached dependencies of all attributes
in the lockfile.

When updating ungoogled-chromium for example, the update script
will now use cached dependencies from vanilla chromium, usually
meaning that no additional fetching has to be done.

(cherry picked from commit 68d5161)

pkgs/applications/networking/browsers/chromium/update.mjs

@@ -38,7 +38,7 @@ for (const attr_path of Object.keys(lockfile)) {
   }
 
   const ungoogled = attr_path === 'ungoogled-chromium'
-  const version_nixpkgs = !ungoogled ? lockfile[attr_path].version : lockfile[attr_path].deps["ungoogled-patches"].rev
+  const version_nixpkgs = !ungoogled ? lockfile[attr_path].version : lockfile[attr_path].deps['ungoogled-patches'].rev
   const version_upstream = !ungoogled ? await get_latest_chromium_release() : await get_latest_ungoogled_release()
 
   console.log(`[${attr_path}] ${chalk.red(version_nixpkgs)} (nixpkgs)`)
@@ -56,7 +56,7 @@ for (const attr_path of Object.keys(lockfile)) {
       deps: {
         depot_tools: {},
         gn: {},
-        "ungoogled-patches": ungoogled ? await fetch_ungoogled(version_upstream) : undefined,
+        'ungoogled-patches': ungoogled ? await fetch_ungoogled(version_upstream) : undefined,
         npmHash: dummy_hash,
       },
       DEPS: {},
@@ -84,18 +84,28 @@ for (const attr_path of Object.keys(lockfile)) {
         value.recompress = true
       }
 
-      const cache = lockfile_initial[attr_path].DEPS[path]
-      const cache_hit =
-        cache !== undefined &&
-        value.url === cache.url &&
-        value.rev === cache.rev &&
-        value.recompress === cache.recompress &&
-        cache.hash !== undefined &&
-        cache.hash !== '' &&
-        cache.hash !== dummy_hash
+      const cache_hit = (() => {
+        for (const attr_path in lockfile_initial) {
+          const cache = lockfile_initial[attr_path].DEPS[path]
+          const hits_cache =
+            cache !== undefined &&
+            value.url === cache.url &&
+            value.rev === cache.rev &&
+            value.recompress === cache.recompress &&
+            cache.hash !== undefined &&
+            cache.hash !== '' &&
+            cache.hash !== dummy_hash
+
+          if (hits_cache) {
+            cache.attr_path = attr_path
+            return cache;
+          }
+        }
+      })();
+
       if (cache_hit) {
-        console.log(`[${chalk.green(path)}] Reusing hash from previous info.json for ${cache.url}@${cache.rev}`)
-        value.hash = cache.hash
+        console.log(`[${chalk.green(path)}] Reusing hash from previous info.json for ${cache_hit.url}@${cache_hit.rev} from ${cache_hit.attr_path}`)
+        value.hash = cache_hit.hash
         continue
       }