# cargo-prune
Prune crate dependencies in "target" folder
When `cargo update` fetches a new version of a crate, that new version of the crate will be
re-compiled as a dependency. However the library corresponding to the previous version continues
to remain in the dependency folder. They are distinguished by adding a hash at the end of the
library name. This makes the build cache grow in size in `Travis` etc. which is not desirable
as as both space and time to upload the cache are wasted. This utility allows for searching the
`deps` directory for duplicate libraries and prune them to contain only the latest.
By default `./target` will be searched but via cmd line arguments one could specify a different
target directory. The target directory can have any complex hierarchy - they will be
recursively searched and pruned of duplicate library dependencies.
Currently this only works for `.rlib` dependencies.
You will need to cargo install it (i.e. should be in `~/.cargo/bin/` in linux etc.) for it to work.
E.g.:
- `cargo prune` (if installed to cargo bin directory)
- `cargo prune --target some/path` (if installed to cargo bin directory)