Re: git: 3cb2f5f369ec - main - lualoader: add support for .lua configuration files

From: Mark Johnston <markj_at_freebsd.org>
Date: Thu, 11 May 2023 13:19:15 UTC
On Thu, May 11, 2023 at 04:11:15AM +0000, Kyle Evans wrote:
> The branch main has been updated by kevans:
> 
> URL: https://cgit.FreeBSD.org/src/commit/?id=3cb2f5f369ecfd6d15aeff2b47e21866551a20de
> 
> commit 3cb2f5f369ecfd6d15aeff2b47e21866551a20de
> Author:     Kyle Evans <kevans@FreeBSD.org>
> AuthorDate: 2023-05-11 04:10:53 +0000
> Commit:     Kyle Evans <kevans@FreeBSD.org>
> CommitDate: 2023-05-11 04:10:53 +0000
> 
>     lualoader: add support for .lua configuration files
>     
>     If a file is specified in loader_conf_files that ends in '.lua', lualoader
>     will now load and execute that file. These may be used in place of a
>     traditional loader.conf to use more complicated logic, where some values
>     may be set based on others or based on the environment that the C bits has
>     left us with.
>     
>     Lua scripts are run in a limited environment. In particular, it does not get
>     access to any modules or, in-fact, anything except environment variable.
>     
>     A config.buildenv hook has been added so that a local module can add
>     whatever it may need to to the environment.
>     
>     When a global var is set in the lua script, it does not immediately alter
>     the loader environment. Instead, the script's environment is initially
>     empty and processed only if the whole script executes successfully.
>     Effectively, a lua configuration file either takes effect or it does not,
>     an error will not leave it in a half-baked state.
>     
>     Reviewed by:    bcr (manpages), imp
>     Differential Revision:  https://reviews.freebsd.org/D28450

Should this be in RELNOTES?  It seems like a very useful feature.