Rust projects cannot be run

[sonnyp]

There is a regression in xdg-document-portal 1.18.2
flatpak/xdg-desktop-portal#1234

It prevents Rust projects (the ones saved somewhere on the disk) from being Run.

Downgrading to xdg-document-portal 1.18.0 solves it.
An other option is to give filesystem access to Workbench with Flatseal or

cd my-cool-project
flatpak override --user --filesystem=$PWD re.sonny.Workbench
# restart Workbench

[sonnyp]

workbenchdev/demos#40

[azzamsa]

I get this error when running the demo:

   Compiling proc-macro-error v1.0.4
error: linker `clang` not found
  |
  = note: No such file or directory (os error 2)

error: could not compile `slab` (build script) due to 1 previous error

I did:

🦄 pwd
~/.var/app/re.sonny.Workbench/data/re.sonny.Workbench/sessions/2026-01-31 03-26-55

🦄 flatpak override --user --share=network --socket=pulseaudio --device=input re.sonny.Workbench

🙊 flatpak install flathub org.freedesktop.Sdk.Extension.rust-stable//25.08 org.freedesktop.Sdk.Extension.llvm21//25.08
Looking for matches…
Skipping: org.freedesktop.Sdk.Extension.rust-stable/x86_64/25.08 is already installed
Skipping: org.freedesktop.Sdk.Extension.llvm21/x86_64/25.08 is already installed

Based on

• https://github.com/flathub/org.freedesktop.Sdk.Extension.rust-stable#with-clang
• https://github.com/flathub/re.sonny.Workbench/blob/master/re.sonny.Workbench.json

re.sonny.Workbench 49.0
org.gnome.Platform 49

GJS 1.86.0
Adw 1.8.3
GTK 4.20.3
GLib 2.86.3
Flatpak 1.16.2
Vala 0.56.18

🦄 systeminfo
OS: Debian GNU/Linux 13 (trixie) x86_64
DE: GNOME 48.7
WM: Mutter (Wayland)

Am I missing something?

[tristianc]

I get this error when running the demo:

Compiling proc-macro-error v1.0.4
error: linker clang not found
|
= note: No such file or directory (os error 2)

error: could not compile slab (build script) due to 1 previous error

I did:

🦄 pwd
~/.var/app/re.sonny.Workbench/data/re.sonny.Workbench/sessions/2026-01-31 03-26-55

🦄 flatpak override --user --share=network --socket=pulseaudio --device=input re.sonny.Workbench

🙊 flatpak install flathub org.freedesktop.Sdk.Extension.rust-stable//25.08 org.freedesktop.Sdk.Extension.llvm21//25.08
Looking for matches…
Skipping: org.freedesktop.Sdk.Extension.rust-stable/x86_64/25.08 is already installed
Skipping: org.freedesktop.Sdk.Extension.llvm21/x86_64/25.08 is already installed

Based on

* https://github.com/flathub/org.freedesktop.Sdk.Extension.rust-stable#with-clang

* https://github.com/flathub/re.sonny.Workbench/blob/master/re.sonny.Workbench.json

re.sonny.Workbench 49.0
org.gnome.Platform 49

GJS 1.86.0
Adw 1.8.3
GTK 4.20.3
GLib 2.86.3
Flatpak 1.16.2
Vala 0.56.18

🦄 systeminfo
OS: Debian GNU/Linux 13 (trixie) x86_64
DE: GNOME 48.7
WM: Mutter (Wayland)

Am I missing something?

This appears to be a different issue than what drove the ticket originally. clang isn't on the flatpak's path, but you can fix that with:

  flatpak override --user \
    --env=PATH=/usr/lib/sdk/llvm21/bin:/usr/lib/sdk/rust-stable/bin:/app/bin:/usr/bin \
    re.sonny.Workbench