| ## New environment variable `MESON_PACKAGE_CACHE_DIR` | |
| If the `MESON_PACKAGE_CACHE_DIR` environment variable is set, it is used instead of the | |
| project's `subprojects/packagecache`. This allows sharing the cache across multiple | |
| projects. In addition it can contain an already extracted source tree as long as it | |
| has the same directory name as the `directory` field in the wrap file. In that | |
| case, the directory will be copied into `subprojects/` before applying patches. |