Allow running gst-uninstalled when gst-build is a subproject

This passes the builddir of gst separately form the build root in case gst-build isn't the root project.

Hrm, wouldn't it be better to check if the file exists and later check in subprojects/gst-build/GstPluginsPath.json ?

Note that I added in Meson >= 0.58 meson devenv command that has the same purpose than gst-uninstalled. We should use meson.add_devenv() in our meson.build files where some env is needed to be set, like GST_PLUGIN_PATH.

https://mesonbuild.com/Commands.html#devenv

The advantage is it works for any meson project, and meson can preset most of the env needed automatically.

@xclaesse will it work after relocation ? I hadded a hack in gst-env.py so one can strip the path on the NFS server (see --sysroot), but I was thinking that there must be a clever way from inside meson.

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assigned to @gstreamer-merge-bot

mentioned in commit ocrete/gst-build@879126a3

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merged

Hrm, wouldn't it be better to check if the file exists and later check in subprojects/gst-build/GstPluginsPath.json ?

It looks like this review by @thiblahute wasn't addressed? That's exactly what I thought when I saw this.

Oops indeed, I think this should be addressed

@xclaesse poke

Ah, actually this is by @ocrete

Oh sorry, I did the merge but didn't see @thiblahute comment. I think he's right, would make it work out of the box.

changed milestone to %1.19.2

mentioned in merge request gstreamer!956 (merged)