Turned out there was other things broken with Pockethold as well.
Latest Composer release changed how some things worked, breaking Pockethold's functionality.

The latest release now locks composer to latest working release, and ensures correct version of Bazaar is downloaded based on today's feedback 🙂

0.1 - Release Candidate 3

I tried using the new installer to download Bazaar and it failed. Here's the log:

    User78 I can't seem to reproduce this error 🙁
    This is the log of one of my test bed, the other is just about the same:

    As you see, it download's 0.2.4 of bazaar :/

      Pockethold will not work out of the box with beta8. I am looking into how to best handle the move to a public folder structure.

        andreherberth you can use a different skeleton to install the same way as before, it will require some more stuff on your end though.

          Hi @andreherberth
          the last step of your install (flarum config) redirected me to a 404 not found page ??

          I have a big problem... I used a Paid Hosting in Ionos.es and its ok all but when start install Bazaar stay freeze...

          Have any option to exclude the extension bazaar in installer.php?

          Thanks you <3

          User78

          andreherberth Pockethold will not work out of the box with beta8. I am looking into how to best handle the move to a public folder structure.

          I believe he's looking into a way to fix it.

              6 days later
              5 days later

              I am happy to announce Beta 8 support for Pockethold.
              Release 1.0 RC 4 Archive | Release Information

              I am working on "cron" support for pockethold. Hopefully it will be out soon 🙂
              Cron is available in one way or another on most shared hosts. And will most likely enable pockethold to work on even more shared hosts

              Other then that, it works like before. Unzip the archive in the folder you want flarum in, and go to "yoururl/installer.php" and follow the steps.

              User78 MikeJones
              Sorry it took so long 🙁

                  i have problem when installing:

                  Warning: require(vendor/autoload.php): failed to open stream: No such file or directory in /home/bisnis14/public_html/index.php on line 12

Warning: require(vendor/autoload.php): failed to open stream: No such file or directory in /home/bisnis14/public_html/index.php on line 12

Fatal error: require(): Failed opening required 'vendor/autoload.php' (include_path='.:/opt/alt/php70/usr/share/pear') in /home/bisnis14/public_html/index.php on line 12

                    Was PHP 7.0, changed to php 7,1 but proc_open is disabled. (We are trying to solve this).
                    Alas. Next release should check server requirements before allowing install.