This fixes developer release builds. Previously we used single quotes
for specifying `--rsync-path`. This caused the parameter to contain
the variable name instead of the content.
Follow-up-of: #14059
Part-of: #13399
Test-bot: skip
We have to define and set the variables in a powershell script so that
they can be used. This was already done for the other powershell scripts,
but overlooked for this one. Also use variables instead of hard-coding
values.
Don't try to install dependencies on macOS - build agents on Windows
and macOS are currently configured manually at this point. We don't
want to be attempting to install dependencies on macOS automatically -
homebrew is extremely fragile for CI as it always updates everything to
latest version (which of course breaks many things).
(from https://github.com/keymanapp/keyman/pull/14059#pullrequestreview-2873213671)
This adds a `configure` build step that will install any missing
dependencies required to build on Linux and macoS.
macOS was added based on `resources/devbox/macos/macos.sh` but is
untested.
Test-bot: skip
