Is there a way to define per-project key bindings?

Question

Currently I define shortcuts for build variants in my global config. Is there a way to do the same, but using <my-project>.sublime-project config file?

I tried to define them inside "settings" field - didn't work:

"settings": [
  { "keys": ["ctrl+shift+a"], "command": "build", "args": {"variant": "my_variant"} }
]

Answer 1

I don't think there is a way to define keymaps outside of .sublime-keymap files, which AFAIK need to be stored under the Packages hierarchy - for example, in Packages/User/Default (<your OS>).sublime-keymap, as Sublime ignores keymap files with other names.

However, for what you're trying to do, there is a workaround. The .sublime-project file supports a "build_systems" setting:

"build_systems":
[
    {
        "name": "List",
        "cmd": ["ls"]
    }
]

By appropriately modifying this on a per-project basis you can enable the Automatic build system and have your specified one run when you hit CtrlB. More information on build systems is available here.