Add a small delay to allow post-build hooks to flush through

It's sometimes possible for the last built store path to not get picked
up by the Cachix daemon. This delay gives the writer (Nix daemon) some
time to flush the messages through the socket before we tell our daemon
to stop listening for more paths.

dist/main/index.js

@@ -28935,6 +28935,8 @@ async function upload() {
                 fromBeginning: true,
             });
             daemonLog.on("line", (line) => core.info(line));
+            // Give the Nix daemon/socket some time to flush all the post-build hooks
+            await waitFor(500);
             try {
                 core.debug("Waiting for Cachix daemon to exit...");
                 await exec.exec(cachixBin, [
@@ -28946,7 +28948,7 @@ async function upload() {
             }
             finally {
                 // Wait a bit for the logs to flush through
-                await new Promise((resolve) => setTimeout(resolve, 1000));
+                await waitFor(1000);
                 daemonLog.unwatch();
             }
             break;
@@ -29119,6 +29121,9 @@ function partitionUsersAndGroups(mixedUsers) {
 function splitArgs(args) {
     return args.split(" ").filter((arg) => arg !== "");
 }
+function waitFor(ms) {
+    return new Promise((resolve) => setTimeout(resolve, ms));
+}
 const isPost = !!core.getState("isPost");
 // Main
 try {

src/main.ts

@@ -261,6 +261,9 @@ async function upload() {
       });
       daemonLog.on("line", (line) => core.info(line));
 
+      // Give the Nix daemon/socket some time to flush all the post-build hooks
+      await waitFor(500);
+
       try {
         core.debug("Waiting for Cachix daemon to exit...");
         await exec.exec(cachixBin, [
@@ -271,7 +274,7 @@ async function upload() {
         ]);
       } finally {
         // Wait a bit for the logs to flush through
-        await new Promise((resolve) => setTimeout(resolve, 1000));
+        await waitFor(1000);
         daemonLog.unwatch();
       }
 
@@ -490,6 +493,10 @@ function splitArgs(args: string): string[] {
   return args.split(" ").filter((arg) => arg !== "");
 }
 
+function waitFor(ms: number): Promise<void> {
+  return new Promise((resolve) => setTimeout(resolve, ms));
+}
+
 const isPost = !!core.getState("isPost");
 
 // Main