rustc nightly added support for adding extra annotations in the form of Makefile comments to dep-info files to track environment variables accessed by way of the env! macro. sccache should parse these directives and add referenced environment variables as hash inputs.
@alexcrichton has a pull request open to add support to cargo. I'm sure it'd be straightforward to add support to sccache's parser.
rustc nightly added support for adding extra annotations in the form of Makefile comments to dep-info files to track environment variables accessed by way of the
env!macro. sccache should parse these directives and add referenced environment variables as hash inputs.@alexcrichton has a pull request open to add support to cargo. I'm sure it'd be straightforward to add support to sccache's parser.