feat(users/flokli/ipu6-softisp): expose qcam to $PATH r/7739

This allows testing the camera connection without pipewire in between:

```
LIBCAMERA_LOG_LEVELS=*:DEBUG qcam
Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use QT_QPA_PLATFORM=wayland to run on Wayland anyway.
[0:26:31.326112005] [51496]  INFO IPAManager ipa_manager.cpp:143 libcamera is not installed. Adding '/nix/store/src/ipa' to the IPA search path
[0:26:31.326354338] [51496] DEBUG IPAModule ipa_module.cpp:334 ipa_ipu3.so: IPA module /nix/store/da6s46p3dk9x7fhh0qj0wrxrqrq7y8av-libcamera-0.2.0/lib/libcamera/ipa_ipu3.so is signed
[0:26:31.326417399] [51496] DEBUG IPAManager ipa_manager.cpp:245 Loaded IPA module '/nix/store/da6s46p3dk9x7fhh0qj0wrxrqrq7y8av-libcamera-0.2.0/lib/libcamera/ipa_ipu3.so'
[0:26:31.326484670] [51496] DEBUG IPAModule ipa_module.cpp:334 ipa_soft_simple.so: IPA module /nix/store/da6s46p3dk9x7fhh0qj0wrxrqrq7y8av-libcamera-0.2.0/lib/libcamera/ipa_soft_simple.so is signed
[0:26:31.326518633] [51496] DEBUG IPAManager ipa_manager.cpp:245 Loaded IPA module '/nix/store/da6s46p3dk9x7fhh0qj0wrxrqrq7y8av-libcamera-0.2.0/lib/libcamera/ipa_soft_simple.so'
[0:26:31.326559430] [51496]  INFO Camera camera_manager.cpp:284 libcamera v0.2.0
[0:26:31.326728389] [51505] DEBUG Camera camera_manager.cpp:69 Starting camera manager
[0:26:31.345213320] [51505] DEBUG DeviceEnumerator device_enumerator.cpp:230 New media device "intel-ipu6" created from /dev/media1
[0:26:31.345249850] [51505] DEBUG DeviceEnumerator device_enumerator_udev.cpp:96 Defer media device /dev/media1 due to 36 missing dependencies
[0:26:31.350335759] [51505] DEBUG DeviceEnumerator device_enumerator_udev.cpp:322 All dependencies for media device /dev/media1 found
[0:26:31.350365700] [51505] DEBUG DeviceEnumerator device_enumerator.cpp:258 Added device /dev/media1: intel-ipu6
[0:26:31.350738881] [51505] DEBUG Camera camera_manager.cpp:113 Found registered pipeline handler 'SimplePipelineHandler'
[0:26:31.350765332] [51505] DEBUG Camera camera_manager.cpp:113 Found registered pipeline handler 'PipelineHandlerIPU3'
[0:26:31.350779457] [51505] DEBUG Camera camera_manager.cpp:113 Found registered pipeline handler 'PipelineHandlerUVC'
```

Change-Id: I30b4ede89f90e2455bf1313b3c7c4d638089e5db
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11180
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI

1 files changed, 7 insertions, 0 deletions

diff --git a/users/flokli/ipu6-softisp/config.nix b/users/flokli/ipu6-softisp/config.nix
index a62dfcf709d8..95cb3e5c2563 100644
--- a/users/flokli/ipu6-softisp/config.nix
+++ b/users/flokli/ipu6-softisp/config.nix
@@ -62,6 +62,13 @@ in
     KERNEL=="system", SUBSYSTEM=="dma_heap", TAG+="uaccess"
   '';
 
+  # provide qcam in $PATH.
+  environment.systemPackages = [
+    (libcamera.override {
+      withQcam = true;
+    })
+  ];
+
   services.pipewire.package = pipewire';
   services.pipewire.wireplumber.package = wireplumber';
 }