cbuild setup --packs does not install missing packs requested by layers

[ReinhardKeil]

Describe the bug

When a pack that is referenced by a layer is missing, the layer detection fails with:

cbuild setup USB_Device.csolution.yml --context-set --packs --update-rte
error csolution: required pack: ARM::[email protected] not installed
error csolution: no compatible software layer found. Review required connections of the project

To Reproduce

Install these packs:

ARM::[email protected]
ARM::CMSIS-Driver_STM32
Keil::[email protected]
Keil::[email protected]
Keil::[email protected]

Make sure that ARM::CMSIS-Compiler pack is not installed!

Then use the USB_Device example configured for board: STMicroelectronics::B-U585I-IOT02A as shown above.

Expected behavior

The layer detection does not fail due to missing packs referenced by a potential layer. Once the layer is specified, the --pack option downloads the pack.

Environment (please complete the following information):

• CMSIS-Toolbox 2.6.1
• Windows

[jkrech]

Root cause: today the list layers command reads all pdsc file from packs listed in potentially matching layers and therefore reports missing packs and results in the corresponding layer not matching.