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>
- update `gomod2nix.toml`
- add formatters as `nativeBuildInputs` for nix build
- export a `XDG_CACHE_HOME` for checks
Signed-off-by: Brian McGee <brian@bmcgee.ie>