Nixpkgs: 19.09 TeXstudio doesn't start

[DunkleCat]

Describe the bug

Trying to start texstudio led to an abort with this error
qt.qpa.plugin: Could not find the Qt platform plugin "xcb" in "" This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
This happened after the 19.03 to 19.09 update.

To Reproduce
Steps to reproduce the behavior:

1. Use 19.09 channel
2. Install texstudio
3. Try to start it

Expected behavior

The application starts without problems

Metadata

`▶ nix run nixpkgs.nix-info -c nix-info -m

• system: "x86_64-linux"
• host os: Linux 5.3.2, NixOS, 19.09beta606.3ba0d9f75cc (Loris)
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.3
• channels(root): "nixos-19.09beta606.3ba0d9f75cc, nixos1903-19.03.173553.6420e2649fa, nixos1909-19.09beta606.3ba0d9f75cc"
• channels(dunklecat): ""
• nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos``

[veprbl]

cc #65399

[johannesloetzsch]

I had the same problem, installing qt5Full solved it. You may want try:

nix-shell -p texstudio -p qt5Full --run texstudio

[DunkleCat]

Report:

On 19.03 the package works as expected
On 19.09 the package works as expected if qt5.full is declared, too

[bb010g]

This is fixed for master in #73484, but not yet for release-19.09.

[bjornfor]

Should be fixed now with b926503738cc5b19f3ee66f8a5745c41318a82ff and parent on release-19.09 branch.