can't build gnome-builder: Program 'sphinx-build-3 sphinx-build' not found or not executable

[RocketRide9]

System

Ubuntu 22.10 kinetic-proposed
vscode installed from deb from microsoft site

Details

I was able to build gnome-builder using gnome-builder by just cloning it and pressing "play" button.
In vscode I installed this extension, run: sudo apt install flatpak-builder and flatpak install org.freedesktop.Sdk.Extension.llvm14. Then pressed the "play" button.

meson-log.txt

[bilelmoussaoui]

I managed to build it just fine here. But it fails as the post-install stage.

[sonnyp]

I managed to build it just fine here. But it fails as the post-install stage.

I've been trying to do a similar post-install trick for Workbench (to get the Vala extension in the runtime) but I've encountered the same issue under flatpak-vscode

GNOME Builder

cp: cannot stat '/usr/lib/sdk/llvm15/bin/*': No such file or directory

            "post-install" : [
                "cp -a /usr/lib/sdk/llvm15/bin/* /app/bin/",
                "cp -a /usr/lib/sdk/llvm15/lib/* /app/lib/",
                "cp -a /usr/lib/sdk/llvm15/libexec/* /app/libexec/",
                "cp -a /usr/lib/sdk/llvm15/include/* /app/include/",
                "cp -a /usr/lib/sdk/llvm15/share/* /app/share/",
                "install -d /app/extensions"
            ]

Workbench

cp: cannot stat '/usr/lib/sdk/vala/bin/*': No such file or directory

      "post-install": [
        "cp -a /usr/lib/sdk/vala/bin/* /app/bin/",
        "cp -a /usr/lib/sdk/vala/lib/* /app/lib/",
        "cp -a /usr/lib/sdk/vala/share/* /app/share/"
      ]

Fedora workstation 38
VSCode 1.78.2
flatpak-vscode 0.0.35

Adding ls /usr/lib/sdk/vala/bin/ as the first post-install command demonstrates that the files are there.

For some reason, it looks like shell expansion doesn't work in flatpak-vscode.

For now I have replaced * with . which accomplish the same in the case of cp.