- It was suggested in https://github.com/Homebrew/brew/issues/ 16733 that
`brew desc <formula_or_cask>` should work like `brew info <formula_or_cask>`
and print the description of the package without needing `--eval-all`.
- Looking at the code, it seems like it's only searching that needs
`--eval-all`, so limit the check to that.
Before:
```shell
$ brew desc hello
Error: `brew desc` needs `--eval-all` passed or `HOMEBREW_EVAL_ALL` set!
```
After:
```shell
$ brew desc hello
hello: Program providing model for GNU coding standards and practices
$ brew desc --search hello
Error: Invalid usage: `brew desc --search` needs `--eval-all` passed or `HOMEBREW_EVAL_ALL` set!
$ brew desc --search --eval-all hello
==> Formulae
dsh: Dancer's shell, or distributed shell
hello: Program providing model for GNU coding standards and practices
```
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