Add variable to packs path

[in4lio]

Please add a ${variable} that will point to the folder of selected CMSIS Pack for the current project. Something like ${ProjDirPath}.

[ilg-ul]

ok, to remain consistent with the other definitions, the first suggestion for the variable name is packs_path.

[in4lio]

Yes, packs_path will point to Packages folder.

Also, for the current project, it would be nice to have variable ${selected_pack_folder} that will contain path relative to ${packs_path}.

For example ${packs_path}/${selected_pack_folder} could point to: c:\dev\Packages\Keil\STM32F1xx_DFP\2.0.0

[in4lio]

I have deleted from previous message a reference to Keil 5, I think it's too complicated way)

[ilg-ul]

I don't think that more package specific variables are realistic, there are too many.

anyway, package management should be automatic, a wizard should create all paths relative to ${packs_path}, so there should be no need to manually manage so many paths.

I am planning such a new wizard, but it'll take a while to implement it.

[in4lio]

This way also seems to be quite reasonable.