By default, any files which match `.gitignore` files anywhere within the tree root will be ignored.
This behaviour can be disabled by providing the `--no-gitignore` flag.
Signed-off-by: Brian McGee <brian@bmcgee.ie>
When running against nixpkgs we were stalling. This was due to a long running read tx which was preventing any writes.
This breaks up reading the cache when walking the filesystem into many smaller read txs.
On my laptop I'm now getting the following with the echo sample:
```console
# fresh cache
❯ nix run .# -- -c --config-file ./test/echo.toml --tree-root ../../../github.com/nixos/nixpkgs
38825 files changed in 320.655826ms
# hot cache
❯ nix run .# -- --config-file ./test/echo.toml --tree-root ../../../github.com/nixos/nixpkgs
0 files changed in 252.920853ms%
```
Signed-off-by: Brian McGee <brian@bmcgee.ie>
Reviewed-on: #18
Reviewed-by: Jonas Chevalier <zimbatm@noreply.git.numtide.com>
Co-authored-by: Brian McGee <brian@bmcgee.ie>
Co-committed-by: Brian McGee <brian@bmcgee.ie>
