How do I --clean-after-build in Manifest mode

[diehard2]

I'm running out of room on my github runner. is there a way to --clean-after-build in manifest mode?

[netcorefan1]

Not sure if this is a supported option, but did you tried to append -cleanafterbuild to VCPKG_FEATURE_FLAGS environment variable?

[dg0yt]

You can pass arguments to to vcpkg via the VCPKG_INSTALL_OPTIONS cmake variable.
https://learn.microsoft.com/en-us/vcpkg/users/buildsystems/cmake-integration#vcpkg_install_options

(But remember that "vcpkg-affecting variables must be defined before the first project() directive, such as via the command line or set() statements.")