# The `stack query` command [:octicons-tag-24: 0.1.6.0](https://github.com/commercialhaskell/stack/releases/tag/v0.1.6.0) ~~~text stack query [SELECTOR...] ~~~ `stack query` outputs certain build information. For example, for a multi-package project `multi` specifying snapshot `lts-19.25` (GHC 9.0.2) and with two local packages, `my-package-A` (version 0.1.0.0) and `my-package-B` (version 0.2.0.0), command `stack query` outputs: ~~~text compiler: actual: ghc-9.0.2 wanted: ghc-9.0.2 locals: my-package-A: path: \multi\my-package-A\ version: 0.1.0.0 my-package-B: path: \multi\my-package-B\ version: 0.2.0.0 ~~~ The component parts of the information can be specified using 'selectors' with the command. In the example above the selectors include `compiler`, `compiler actual`, `locals`, `locals my-package-A`, and `locals my-package-A version`. For example, commanding: ~~~text stack query locals my-package-B path ~~~ results in output: ~~~text \multi\my-package-B\ ~~~