vm_build_utils.vcpkg : wrap vcpkg to build and install into virtual env

utilities for vcpkg builds

class vm_build_utils.vcpkg.Build(run_mode, source_root, json_path)

calls vcpkg to build and then potentially install libs into venv

bootstrap()

build vcpkg for the first time if needed

build()

run a vcpkg install command to build libs

check_call(cmd_args, cwd, **kwargs)

call a subprocess, exit on error or return on success

rel_vcpkg_path()

relative path to vcpkg