tree ad93de96a15f372baab0d8f2fd128a50b9941f9d
parent 96c657fc60920d2a6a82318aa50e0abf82749604
author Sam Clegg <sbc@chromium.org> 1785790195 -0700
committer Sam Clegg <sbc@chromium.org> 1790983206 -0700

Track active tools and SDKs in activated.json

Store active tools and SDKs in a dedicated `activated.json` file when
they are activated by `emsdk activate`. Update `Tool.is_active()` to check
against `activated.json` rather than matching entries in `.emscripten`.

This solves several issues with the previous `.emscripten`-based
`is_active()` logic:

1. Tools with no `activated_cfg` (such as `ccache` or tools that only
   modify `PATH` or environment variables) previously returned
   `is_active() == False` because they had no `.emscripten` keys and no
   dependencies (`len(deps) == 0`).
2. Tools with dependencies but no `activated_cfg` previously falsely
   reported `is_active() == True` whenever their dependencies were active,
   even if the tool itself was never activated.

Replaces: #1345