feat: --makepkg-conf command, MakepkgConf and specific flag overrides tied to specific packages #1509
Description
[x] Have you checked the readme and man page for this feature?
[x] Have you checked previous issues for this feature?
- makepkg-conf command to set at runtime, useful when testing compilation flags.
- having the ability to override specific flags and makepkg-confs specific to packages
- some packages only build with gcc, whereas to those of us who work or develop with clang, llvm and in some cases clang libc++ as well, it's nice to have a way to set the makepkg.conf file used as well as some of the other flags for that!
- A similar case could actually also be made for the build directory! If a large package is to be built, I'd love a way to have an override specific to that package, to build outside of my RAM tmpfs but in general for most packages I'd like to build within, because I have a ton of space in it! etc etc :3